Construction of Trabzon Water Supply System - Completion Works

This is an EU-financed works tender (EC-ENEST/ANK/2026/EA-OP/0011) for completion of the Trabzon Water Supply System in Türkiye covering pipelines, approximately 2,600 house connections, PRV chambers, flowmeters, residual chlorine equipment and a SCADA system. The deadline for submission is 21 July 2026 at 14:30 Asia/Istanbul with public opening on 22 July 2026; an optional site visit is scheduled for 22-23 June 2026 and questions must be submitted by 30 June 2026. The contract duration is a maximum of 12 months with a 365-day defects notification period and award will be to the lowest-priced technically compliant tender, prices in Euro. Tenderers must meet selection and financial requirements including minimum average annual turnover of €10,000,000, provide a tender guarantee of €180,000 and a performance guarantee of 10% of the accepted contract amount, and submit paper originals and copies to the contracting authority in Ankara.

Construction of Trabzon Water Supply System - Completion Works (Tender EC-ENEST/ANK/2026/EA-OP/0011)

What the contract covers

Design, supply, installation, testing and commissioning of remaining water distribution works in Trabzon, Türkiye: ~2 600 household connections (PE DN32–DN110), ~€48 500 MDN110–DN225 and ~€1 500 MDN250–DN630 distribution mains, ~€9 000 Mlarge mains (DN630–DN1000), 16 DMA flowmeter chambers, 51 PRV chambers (supply/installation), 7 residual-chlorine measurement chambers, 18 air-valve/discharge chambers, 1 SCADA integration and related mechanical, electrical and instrumentation works, testing, commissioning, training and 12 months operation supervision.

Who may tender:Open international tender for contractors and consortia meeting the selection and exclusion criteria in the tender dossier (legal capacity, audited accounts, minimum average turnover and relevant waterworks experience). Subcontracting is allowed; all subcontractors and capacity-providing entities must satisfy eligibility requirements. The works are performed in Türkiye (Trabzon).

1. 1Procedure: Open procedure, non-electronic submission (physical delivery of original + copies).
2. 2Deadlines: Deadline for receipt of tenders 21 July 2026 14:30 (Asia/Istanbul). Public opening 22 July 2026 14:30. Questions cutoff 30 June 2026. ¹
3. 3Contract duration: Maximum 12 months from commencement.
4. 4Award method: Lowest price (technically compliant bid wins).
5. 5Security: Tender guarantee €180,000 (original required with tender). Performance guarantee 10% of accepted contract amount on award.
6. 6Key eligibility/selection highlights: minimum average turnover requirement (as per dossier), required experience in water distribution projects and FIDIC contract experience; consortium rules and financial capacity requirements apply.

How to apply / practical notes

Submit physical tenders to the address in Volume 1 instructions; tenders must follow the required forms (Tender Form, Declaration on Honour, Financial and Technical questionnaires, priced Bill of Quantities, guarantees and supporting documents). Electronic submission is not accepted; late or incomplete tenders will be rejected. See full procurement documents for mandatory forms, technical specifications, and site visit details.

Footnotes

1. 1Full tender dossier, deadlines, required forms and downloadable documents are available on the EU Funding & Tenders Portal Tender details page Tender details.

This is an open procedures call for tenders published on the EU Funding & Tenders Portal (TED ref: 78/2026 275926-2026). The contracting authority is the Department of Project Implementation (DoPI), General Directorate of European Union and Foreign Relations, Ministry of Environment, Urbanisation and Climate Change (Republic of Türkiye). The works are part of an EU co-financed project under the Multi-annual action programme for Türkiye: Environment and Climate Action (Pre-Accession Countries / New Member States programme). The works comprise completion works for the Trabzon water supply system: house connections, distribution pipelines (DN110–DN1000), SCADA/RTU and instrumentation, flowmeters, PRV chambers, residual chlorine measurement equipment, air valve and outlet chambers, valve boxes, cathodic protection, and associated civil, mechanical, electrical and commissioning works as described in the tender dossier.

Deadlines and key dates

Two key dates are published in the tender dossier. Deadline for receipt of tenders:21 July 2026 at 14:30 Asia/Istanbul. Public opening: 22 July 2026 at 14:30 Asia/Istanbul. Questions must be submitted by 30 June 2026. The contracting authority indicated provisional award and signature dates in the timetable (notification of award 21 September 2026 and signature 12 October 2026).

Summary of scope of works

Works cover the completion of the Trabzon water supply system. Principal tasks described in the tender summary and technical volumes include:

1. 1Connection of approximately 2,600 house connections to the new distribution pipeline using PE pipes (DN32–DN110) with a total house connection length of about €15,600 M (avg. ~€6 Mper connection).
2. 2Design, supply, installation, programming and commissioning of a functional SCADA system including computer hardware, servers, operator workstations, operator screens, networking, software and integration with field RTUs and the End Recipient’s existing SCADA.
3. 3Supply and installation of 16 underground flowmeters and instrument integration to SCADA; 7 residual chlorine measurement equipments and associated RTU communications.
4. 4Construction of new distribution pipelines DN110–DN225 (approx. €48,500 M) and DN250–DN630 (approx. €1,500 M).
5. 5Construction of approx. €9,000 Mlarge water mains DN630 and DN1000 (steel for DN900–DN1000 indicated; detailed BoQ includes DN900 and DN1000 pipe items).
6. 6Construction of 18 underground air valve chambers and discharge valve chambers, and supply/installation of 51 PRV chambers including PRV valves, ventilation pipes, manometers, fittings and accessories.
7. 7Installation of 1,055 missing valve boxes and multiple remedial works for existing network items (replacement of damaged boxes, inlet/outlet adjustments, additional manholes and vents).
8. 8Electrical, instrumentation and automation works for pump stations, reservoirs, PRVs, DMAs and other field units: RTUs with GSM communications, cabling, power supply works, LV/MCC, lighting, earthing, lightning protection and UPSs.
9. 9Civil and builder works for chambers, chambers’ internal equipment supports, concrete works, reinstatement (note: final road/asphalt reinstatement is to be performed by the End Recipient – Contractor responsible for temporary reinstatement and working area protection).
10. 10Testing, pre‑commissioning, commissioning, training of municipality staff and 12 months post‑taking‑over operation supervision.

Procurement procedure and contract model

Procedure type:Open procedure. Submission method: Non-electronic (paper submissions to the address stated in the Invitation to Tender). Award method: lowest price among technically compliant tenders. Maximum contract duration: 12 months (the main contract duration is 12 months as stated; note that Defects Notification Period and any operation supervision obligations extend beyond this). Contract conditions: FIDIC Conditions of Contract for Construction for Building and Engineering Works Designed by the Employer (Red Book, First Edition 1999), with Particular Conditions in Volume 2. Security requirements, guarantees and other contractual instruments are included in Volume 2 (performance security 10% of accepted contract amount; tender guarantee €180,000).

Procurement documents and deliverables

The tender dossier comprises VOLUMES 1–5 including:Instructions to Tenderers; Tender Form and Annexes; Forms (financial statement, declaration on honor, tender guarantee, power of attorney, questionnaires); Tender specifications with Particular Technical Specifications (Vol. €3B) for Electrical, Mechanical, Earth & Pipe Works, Technical appendices and detailed Bill of Quantities (Volume 4) and Design Documents including drawings (Volume 5). A complete set of templates (performance/security guarantees, sample contracts and FIDIC Particular Conditions) are provided and mandatory. 38 procurement documents have been published with the call.

Locations and place(s) of performance

Place of performance:Trabzon Province, Turkey. All works performed on-site within the municipal water network and specified chambers, pump stations and reservoirs within the geographic scope of the project.

Documents, site visit and communications

Tenderers must examine all tender documents and drawings carefully. Optional site visit dates and any clarification meetings are published in the tender instructions and on the Contracting Authority’s website. Queries to the contracting authority are permitted until 30 June 2026 and answer publication deadlines are specified in the Instructions to Tenderers. Tenderers must have an EU Login account to access the portal but submission is non-electronic; a PIC is not required to submit a tender in this procurement (see tender form).

Procurement classification and CPV

Main CPV code:45232150 - Works related to water-distribution pipelines. The nature of contract is Works.

Milestones (published in the tender dossier)

Who should bid / Eligible applicant types

Summary:This is a works contract suitable for experienced infrastructure contractors capable of delivering large-scale civil works, mechanical/electrical installations, instrumentation and SCADA integration for water distribution systems. Eligible applicant types (based on tender text and typical public works procurement):

1. 1SMEs and large construction contractors (domestic or international) with relevant works experience (water distribution networks, mains, PRVs, chambers and instrumentation).
2. 2Specialist subcontractors and suppliers for mechanical equipment, valves, flow meters, electrical panels, LV/MCC and frequency-converters, and SCADA software integrators.
3. 3Consortia / joint ventures (the tender allows joint ventures and sets selection criteria applicable to consortiums including minimum turnover and financial capacity per lead/member rules).
4. 4Universities and research institutions are not typical prime contractors here but may be involved as suppliers or capacity providing entities where relevant (e.g., instrumentation calibration, testing laboratories).
5. 5Nonprofit organisations /NGOs are not suitable as prime contractors for civil engineering works but may be included in consortiums for community engagement elements.
6. 6Subcontractors (specialists) for defined elements: instrumentation, cathodic protection, HVAC for control rooms, etc.

Funding type and programme

Funding type:This is a public procurement (works contract) financed / co-financed by the European Union under the Multi-annual action programme for Türkiye: Environment and Climate Action and co-financed by the Republic of Türkiye. The Programme ID referenced is 42921266 - PreAccession Countries / New Member States.

Consortium requirement

The tender accepts bids by single applicants or consortia/joint ventures. If bidding as a consortium, the tender form and questionnaire must be completed for each member and the consortium lead must be identified. The submission rules prohibit a firm participating both alone and as a consortium member for the same contract. Selection criteria (see below) apply to the consortium as a whole and to lead members for specific thresholds.

Beneficiary scope (geographic eligibility)

The place of performance is Türkiye. Eligibility rules in the tender require compliance with the Additional information about the contract notice and rules for entities from Eligible Source Countries (defined under the tender documents, IPA-2 rules). The procurement is managed by the Turkish contracting authority and open to companies meeting the nationality and exclusion criteria stated in the tender documents. In practice, companies established in Türkiye and in Eligible Source Countries may participate subject to the tender's national and EU rules.

Target sector

This procurement targets the water and sanitation sector (water distribution networks, water quality measurement, water infrastructure, SCADA and automation). Thematic sectors: water & sanitation, environment, climate adaptation, urban infrastructure, ICT (SCADA/automation).

Mentioned countries

Explicitly mentioned:Türkiye. Regionally the project is part of the EU pre‑accession programme for Türkiye (PreAccession Countries / New Member States).

Project stage and maturity expected

Expected maturity:construction / implementation and commissioning stage. The tender requires detailed design and as‑built documentation for specific items, so bidders must have capabilities for final design-to-construction integration, factory testing, on-site installation, testing and commissioning, and training/12-month operation supervision.

Funding amount and contract value (identified range)

The tender dossier did not state an exact estimated total value figure in the public summary. Financial schedules and BoQ are provided in Volume 4; bidders must price the Bill of Quantities. Tender security amount is €180,000 indicating a high-value works contract (multiple millions EUR). Bidders should consult the Bill of Quantities (Volume 4) and tender forms to establish total contract price during bid preparation.

Application type and submission method

Submission type:open call tender (public procurement). Submission method: Non-electronic (paper). Tenders must be submitted in one original and five copies; originals of certain documents (tender guarantee, signed declarations) must be provided as specified in the Instructions to Tenderers (Volume 1).

Nature of support and financial instruments

Nature of support:Direct works contract (payment for completed works). The contract provides financial payments (contractor invoices based on interim payment certificates), performance guarantees and retention mechanisms. Funds originate from EU co-financing and national co-financing; payment will be handled through the contracting authority.

Application stages and process

Number of application stages:1 stage open tender submission followed by evaluation phases: (a) administrative compliance check, (b) technical compliance evaluation, (c) financial evaluation/price comparison and award to lowest priced technically compliant tender. Additional contracting steps: notification of award, signing contract and submission of performance guarantee within 30 days. There is provision for clarifications and possible post-award contractual clarifications.

Success rates

No published historical success rates:as a public open tender the success rate depends on the number of valid bids submitted. Award is to the lowest priced technically compliant tender among those qualifying. Bidders should ensure strict compliance with administrative and technical requirements to avoid disqualification during the administrative compliance check.

Co-funding and financial guarantees

Co-funding:The project is co-financed by the European Union and the Republic of Türkiye. The contract price is paid under the works contract; bidders must account for taxes and duties: the Contract and Framework Agreement provide details on tax and customs exemptions where applicable. Financial guarantees required: Tender guarantee €180,000 (original); Performance guarantee 10% of the accepted contract amount (to be provided on contract signature). An advance payment (10% of accepted contract amount) may be included and requires an advance payment guarantee. Retention money: 6% of the contract amount is retained (see Particular Conditions) but the second half of retention can be replaced by a guarantee after taking-over.

Selection / eligibility and minimum requirements

Selection and exclusion:Tenderers must supply evidence they meet the eligibility and non-exclusion criteria (Declaration on Honour covering exclusion grounds, up-to-date documents proving legal status). Exclusion grounds include bankruptcy, fraud, tax/social security breaches, grave professional misconduct, corruption, money‑laundering, terrorism-related offences, irregularities, significant deficiencies in previous contracts. Tenderers must declare compliance with EU restrictive measures lists. The tender dossier requires financial and technical selection criteria be met.

Minimum financial criteria:Average annual turnover for the past 3 years: minimum €10,000,000 (or equivalent). Access to liquid assets/credit facilities: minimum €6,500,000 (or equivalent). Positive profit in at least 2 of the last 3 financial years. Audited accounts required (Form 4.4).

Minimum technical criteria:Within the last five years the tenderer must have completed: either (a) at least one water supply / distribution / wastewater / irrigation pipeline project with value ≥ €8,000,000 or (b) at least two similar projects each ≥ €5,000,000. Also completion of at least 100 km of pipeline in a single contract is required as part of experience. At least one contract executed under FIDIC conditions is required. Proof: performance or taking-over certificates signed by the project owner/Engineer.

Joint ventures/consortium:the consortium as a whole must meet the selection criteria. The lead member must meet at least 50% of turnover and financial resources criteria; each member must meet at least 10% of turnover/financial resources criteria. Capacity‑providing entities must make commitments and will become jointly and severally liable for specific financial criteria when relied upon.

Templates and application forms (how the application forms look)

The tender dossier provides mandatory forms and templates in Volume 1 Section 4 and Section 2 (Tender Form, Annex 1 Declaration on Honour, Forms 4.1–4.6 etc.). Applicants must complete the Tender Form (Volume 1 Section 2), Declaration on Honour (Annex 1), Forms 4.1–4.6 (general information, organization chart, power of attorney, financial statements, identification, technical qualifications, curriculum vitae of key staff, plant list, work plan, quality assurance outline) plus Volume 4: priced Bill of Quantities (Unit Price schedules). Performance and tender guarantee template forms are provided (Volume 1 Section 3 and Volume 2 specimen guarantees). The submission requirements and order are strictly defined in the Instructions to Tenderers (Volume 1 Section 1).

1. 1Complete signed Tender Form and Annex 1 (Declaration on Honour) per legal entity or consortium member.
2. 2Form 4.1 General information, Form 4.2 Organisation chart, Form 4.3 Power of Attorney.
3. 3Form 4.4 Financial statements (last 3 years) and cash flow projections (next 2 years).
4. 4Form 4.5 Identification form (natural persons) and Form 4.6 Technical qualifications (personnel lists, CVs, plant lists, work plan, experience forms).
5. 5Priced Bill of Quantities (Volume 4) with detailed unit prices for all items; electronic copy of priced BoQ as required.
6. 6Original tender guarantee (€180,000) as specified and valid (45 days beyond validity period including extensions).
7. 7Other supporting documents, test certificates, manufacturer’s data, design drawings and sample documentation as requested in the tender specifications.

Evaluation and award

Evaluation follows these main steps:(1) Administrative compliance check (signed forms, tender guarantee, completeness); (2) Technical compliance — conformity with mandatory technical specifications and minimum technical selection criteria; (3) Financial evaluation — arithmetical checks, correction of errors and calculation of final tender price; (4) Award to the most economically advantageous offer defined here as the technically compliant tender with the lowest price (lowest price method among technically compliant tenders). The contracting authority reserves the right to request clarifications; clarifications must not alter prices or substance of the tender. Tender validity is 90 days from deadline and the successful bidder must provide performance security and sign the contract within 30 days.

Risk allocation and contractual points of note

Key contractual provisions:FIDIC Red Book conditions (General Conditions) with Particular Conditions. Performance security 10% of accepted contract amount. Tender guarantee €180,000. Retention 6% of contract amount (half may be replaced by a guarantee after taking-over). Contractor bears responsibility for site investigations it deems necessary and for all temporary works, traffic management and safety measures. Contractor responsible for obtaining permits for construction activities and must coordinate protocols with municipal authorities; End Recipient may provide certain utilities up to site boundary. VAT and tax exemptions under the Framework Agreement with Türkiye are referenced in Volume 2 Section 7 and Particular Conditions; follow the tax and customs arrangements annex for details. The Employer is not bound to reply to questions after the indicated cut-off date. The contractual language is English; the governing law is Turkish law (Particular Conditions). Arbitration seat is Ankara, Türkiye. Dispute Adjudication Board (DAB) procedure is ad hoc with one-member adjudicator nominated by ATCEA or a person appointed by the President of ATCEA.

How bidders should prepare

Practical steps for bidders:undertake the site visit and optional clarification meetings; review all Volumes (1–5), Complete the mandatory forms, prepare the priced BoQ and ensure all supporting documentation (audited financial statements, experience certificates, plant lists, CVs, power of attorney, tender guarantee) are in the submission. Allow time for administrative approvals and prepare the performance security draft. Follow the language requirement (English) and ensure translations where necessary. Plan schedule and resourcing to meet the tight contract duration (12 months) and the 12-month operation supervision service. Comply with EU visibility rules and provide signboards/plaques as specified.

Risks for bidders & common disqualifiers

Common reasons for bid rejection include:non‑compliance with administrative submission rules, missing or invalid tender guarantee, incomplete forms or missing original signatures, failure to meet minimum financial or technical selection criteria (turnover, past contract values, staff or equipment), not meeting origin rules or being on exclusion lists, offering variants when they are not permitted, and late submission. Ensure full compliance with the Declaration on Honour and provide required documentary evidence within the deadlines. The contracting authority may levy administrative penalties if false declarations are made.

Key technical requirements / notable technical details

Technical volumes provide detailed technical requirements:FIDIC conditions, Particular Technical Specifications for Electrical Works (SCADA, RTUs, flow meters, residual chlorine analyzers, LV/MCC, earthing, lightning protection, UPS), Mechanical Works (PRV chambers, hydrants, etc.), Earth and Pipe Works (trench details, bedding, HDPE PN10/PN16 and steel pipe specifications, jointing, factory and site testing), plus designs/drawings in Volume 5 and detailed Bill of Quantities in Volume 4. SCADA must interoperate with the End Recipient’s existing system; RTUs shall use GSM communications to SCADA and be IEC 61131-3 compliant. Flowmeters are electromagnetic, sensors rated IP68 where required. Cathodic protection is specified in the BoQ and technical sections. Contractors shall submit shop drawings, test reports, FAT/I FAT schedules and provide 12 months of operational supervision after Taking Over.

Templates and structure of application forms (outline)

The contractor must structure the tender submission according to the Instructions to Tenderers (Volume 1). Submit one original and five copies. Principal sections to include: (1) Cover letter and Tender Form (signed) with Annex 1 Declaration on Honour; (2) Administrative compliance checklist and forms (4.1–4.5); (3) Technical offer (Design clarifications, shop drawings, method statements, work plan, CVs of key staff, plant lists, quality assurance plan, environmental and H&S plan, SCADA and instrumentation details); (4) Financial offer: completed priced Bill of Quantities (Volume 4) and cashflow; (5) Tender Guarantee (original); (6) Supporting documents: audited accounts, performance certificates, manufacturer data, certificates of origin for supplied goods, insurance/guarantee drafts, power of attorney.

Key procurement risks and mitigations

Risks:(i) Non-compliant administrative submission (mitigate: strict checklist and rehearsal of submission); (ii) Failure to meet financial/technical thresholds (mitigate: use JV/consortium or capacity-providing entities with documented commitments); (iii) Incompatibility with End Recipient SCADA (mitigate: early technical coordination and compliance testing); (iv) Permits and road restoration coordination (mitigate: early engagement with municipal authorities and ensure the Contractor’s program accounts for permit lead times); (v) Exchange rate and supply chain risks (mitigate: adequate financial buffers, supply confirmations and local sourcing where feasible).

How bids will be evaluated — essential compliance checkpoints

Essential compliance checkpoints include:correct and signed Tender Form and Annex 1; submission of tender guarantee and required number of copies; presence of required financial evidence (audited accounts, bank statements); meeting minimum turnover and financial resources thresholds; evidence of required project experience (taking-over or provisional acceptance certificates) for similar works; submission of all required forms in Volume 1 Section 4; compliance with technical specifications (SCADA, flowmeters, PRVs, pipe materials complying with TS/EN standards) and conformity to the Bill of Quantities. Technical non‑compliance will render a bid disqualified prior to price evaluation.

Contract execution and key obligations

On award the Contractor must provide the performance guarantee (10% of contract price) prior to signature, mobilize within the agreed commencement time, implement the works under FIDIC Red Book terms with Particular Conditions, follow the Contractor’s Quality Assurance Plan, safety and environmental mitigation measures, factory and site testing regimes, provide as-built drawings, O&M manuals, training and 12 months operation supervision services after taking over. The Employer retains rights for audits and checks by EU bodies (OLAF, Court of Auditors, etc.).

Concluding summary: What is this opportunity about and how to explain it?

This is a major public works tender to complete the Trabzon Water Supply System in Türkiye. The contract combines civil pipeline construction and chambers with mechanical, electrical, instrumentation, automation and SCADA integration works. It is co-financed by the European Union under an IPA pre-accession programme and managed by the Department of Project Implementation (DoPI) of the Turkish Ministry. The procurement uses FIDIC Red Book conditions and an open procedure; award is to the lowest priced technically compliant tender. Bidders must have substantial experience and financial capacity in comparable water network projects, comply with the detailed technical requirements (pipes, fittings, chambers, PRVs, flow meters, residual chlorine analyzers, RTUs and SCADA), submit the mandatory forms and guarantees, and be prepared to carry out factory testing, site installation, testing, commissioning and training plus 12 months post‑taking‑over supervision. Tender submissions are on paper and must follow the precise list of documents and templates provided in the dossier. The contract demands strict compliance with environmental, safety and visibility requirements and allows the contracting authority and EU bodies to carry out audits and inspections.

Where to get the official documents and resources:The full tender dossier (Invitation to Tender, Tender Form, Tender Specifications, Bill of Quantities, Technical Specifications, FIDIC Particular Conditions, sample guarantees and templates) is published on the EU Funding & Tenders Portal and is downloadable via the tender details page. Consult the provided documents in Volumes 1–5 for all mandatory forms, drawings and exact pricing schedules Tender Details and Documents Guidance – PRAG and ePRAG Publicity Manual for External Actions Project technical files and BoQ (example) ¹

Footnotes

1. 1Download full procurement documents from the EU Funding & Tenders Portal tender page and the Invitation to Tender (d4a/d4b) in Volume 1, and consult Volumes 2–5 (Particular Conditions, Technical Specifications, BoQ and Design Drawings) for mandatory forms and detailed technical and contractual requirements.

Funding Opportunity Overview

This is a works contract tender for the completion of the Trabzon Water Supply System in Turkey, financed by the European Union under the Multi-annual Action Programme for Turkey: Environment and Climate Action. The project aims to reduce non-revenue water losses, minimize network losses, and ensure safe and hygienic potable water supply to Trabzon City in compliance with Turkish legislation and EU Acquis.

Tender Identification and Key Dates

Tender Reference:EC-ENEST/ANK/2026/EA-OP/0011

TED Publication Date:22 April 2026

Deadline for Tender Submission:21 July 2026 at 14:30 Asia/Istanbul time

Public Opening Session:22 July 2026 at 14:30 Asia/Istanbul time

Deadline for Questions:30 June 2026 at 23:59 Asia/Istanbul time (21 days before submission deadline)

Contract Duration:Maximum 12 months from commencement date, plus 365 calendar days defects notification period

Scope of Works

The contract comprises construction of a new water supply and distribution system for Trabzon City. The main works include 2600 house connections using PE pipes with diameters DN32 to DN110 (approximately 15,600 meters of house connection pipeline at average 6 meters per connection), construction of 16 underground flowmeters, 1 PRV chamber, and 7 residual chlorine measurement equipment. Additional works include construction of water distribution network pipelines ranging from DN110 to DN630 (approximately 48,500 meters) and DN250 to DN630 (approximately 1,500 meters), construction of 9,000 meters of water mains DN630, DN900 and DN1000, construction of 18 underground air valve chambers and discharge valve chambers, installation of 1,055 missing valve boxes, and supply and installation of 51 PRV chambers with missing ventilation pipes, manometers, valves, fittings and other items.

The contractor must also design and supply a functional SCADA system consisting of computer hardware and software in compliance with the existing SCADA system of the End Recipient (Trabzon Water and Sewerage Administration). The SCADA system will cover new pumping stations, reservoirs, DMA flowmeter chambers, PRV chambers, and residual chlorine metering chambers. Additional deliverables include design of water pipelines and other components, preparation of as-built plans, testing and commissioning, training of municipal staff, and 12 months supervision of operation after taking over.

Contracting Authority

Department of Project Implementation, General Directorate of European Union and Foreign Relations, Ministry of Environment, Urbanisation and Climate Change, Mustafa Kemal Mahallesi 2082. Cadde No:52 Çankaya - Ankara, Turkey. End Recipient: Trabzon İçme Suyu ve Kanalizasyon İdaresi Genel Müdürlüğü (Trabzon Water and Sewerage Administration).

Eligibility and Participation Requirements

Tenderers must be registered firms or natural persons legally capable of carrying out the specified works. Participation is open to economic operators from any country. Tenderers must not be in any exclusion situation as defined in the practical guide (PRAG), including bankruptcy, breach of tax or social security obligations, grave professional misconduct, fraud, corruption, or other criminal offences. Tenderers must declare they are not subject to EU restrictive measures and have no professional conflicting interests.

Subcontracting is allowed but the contractor retains full liability for performance. A company may not tender both individually and as a member of a consortium for the same contract. Consortiums (joint ventures) are permitted and must appoint a lead member. All consortium members are jointly and severally liable for contract performance.

Selection Criteria

Economic and Financial Capacity

Annual Turnover:Average annual turnover in the past 3 years must be at least €10,000,000 or equivalent. For consortiums, the combined turnover must meet this threshold. Evidence must be provided through audited balance sheets and income statements verified by a Certified Public or Chartered Accountant or approved by Tax Office.

Financial Resources:Tenderer must demonstrate by bank statement that liquid assets, lines of credit, or other financial means of at least €6,500,000 are available or accessible to meet construction cash flow for the contract. Evidence must clearly demonstrate financing availability for the concerned contract.

Financial Position:Tenderer should be in positive profit account for at least 2 of the last 3 financial years. Audited financial statements and reports from Certified Public or Chartered Accountants for the last 3 financial years must be submitted demonstrating soundness of financial position and long-term profitability.

Technical and Professional Capacity

Tenderer must have completed construction works contracts of similar nature as prime contractor within the last 5 years (completion date within 60 months prior to tender submission deadline). Evidence must include original or notary certified copies of taking over (provisional acceptance) or performance (final acceptance) certificates signed by supervisors or contracting authorities.

Minimum experience requirements include:(a) completion of at least one water supply and/or water distribution network and/or wastewater/stormwater collection network and/or irrigation pipeline works with minimum value €8,000,000, or two such works each with minimum value €5,000,000; (b) completion of at least 100 kilometers of water supply and/or water distribution network and/or wastewater/stormwater collection network and/or irrigation pipeline works in a single contract; (c) completion of at least one construction contract according to FIDIC conditions of contract.

Consortium Requirements

Lead member must meet not less than 50 percent of annual turnover and financial resources criteria. Each member must meet not less than 10 percent of these criteria. Each individual member must satisfy legal status criterion. The consortium as a whole must be in positive profit account for at least 2 of the last 3 financial years collectively and must satisfy similar works experience, annual turnover and financial resources criteria.

Tender Guarantee and Financial Securities

Tender Guarantee:€180,000 required. Must be provided as bank guarantee, banker's draft, certified cheque, guarantee from insurance/guarantee company, or irrevocable letter of credit made out to contracting authority. Must remain valid for 45 days beyond tender validity period including extensions.

Performance Guarantee:10 percent of Accepted Contract Amount in Euro, to be provided upon contract signature.

Advance Payment Guarantee:Required for advance payment of 10 percent of Accepted Contract Amount, payable in one instalment within 42 days upon delivery of guarantee.

Retention Money Guarantee:6 percent retention applied to interim payments with limit of 6 percent of Accepted Contract Amount.

Tender Submission Requirements

Tenders must be submitted in one original clearly marked 'original' and five copies clearly marked 'copy'. Technical and financial offers must be placed together in a sealed envelope, then placed in another sealed envelope/package. Submission is non-electronic and must be sent by post/courier or hand-delivered to: Assoc. Prof. Dr. İsmail Raci Bayer (Director/Head of IBFM), Department of Project Implementation, General Directorate of EU and Foreign Relations, Ministry of Environment, Urbanisation and Climate Change, Mustafa Kemal Mahallesi 2082. Cadde No:52 Çankaya - Ankara, Turkey. Hand-delivery hours are 09:30-17:30 Monday to Friday.

Sealed envelope must bear:contracting authority address, reference code EC-ENEST/ANK/2026/EA-OP/0011, lot number if applicable, words 'Not to be opened before the tender opening session' in English and Turkish, and tenderer name. All tenders must be submitted before 21 July 2026 at 14:30 Asia/Istanbul time. Late tenders will be rejected and not evaluated.

Required Documentation

All tenders must include:(1) Tender form with signed Declaration on Honour on exclusion and selection criteria (Annex 1); (2) Documentation as required in questionnaire including general information about tenderer (Form 4.1), organisation chart (Form 4.2), power of attorney (Form 4.3), financial statement (Form 4.4), identification form (Form 4.5); (3) Technical qualifications documentation including personnel overview (Form 4.6.1.1), personnel to be employed (Form 4.6.1.2), CVs of key personnel (Form 4.6.1.3), plant list (Form 4.6.2), work plan and programme (Form 4.6.3), experience as contractor (Form 4.6.4), joint venture data (Form 4.6.5), litigation history (Form 4.6.6), quality assurance system (Form 4.6.7), accommodation for engineer (Form 4.6.8), further information (Form 4.6.9); (4) Bill of Quantities with prices in Euro; (5) Cash flow statements; (6) Copies of organisation documents, legal status, registration, power of attorney; (7) Financial statements for last 3 years verified by chartered accountant; (8) Financial projections for next 2 years; (9) Evidence of liquid assets and credit facilities; (10) Evidence of relevant experience with taking over certificates; (11) Proof of exclusion/selection criteria compliance; (12) Tender security form; (13) Signed copy of first page of FIDIC General Conditions; (14) Electronic copy of priced Bill of Quantities.

Tender Validity and Award Criteria

Tender Validity Period:90 days from submission deadline. Contracting authority may request extension up to 40 additional days before validity expires. Successful tenderer must maintain tender validity for further 60 days after notification.

Award Criteria:Most economically advantageous tender is the technically compliant tender with the lowest price. Award method is lowest price.

Evaluation Process:Tenders undergo administrative compliance check, technical evaluation, and financial evaluation. Only administratively compliant tenders proceed to technical evaluation. Only technically compliant tenders proceed to financial evaluation. Contracting authority may request clarifications but these may not alter tender price or content except to correct arithmetical errors.

Contract Terms and Conditions

Governing Law:Turkish Law

Language:English for ruling language and communications

Conditions of Contract:FIDIC Conditions of Contract for Construction for Building and Engineering Works Designed by the Employer (Red Book, First Edition 1999) as amended by Particular Conditions

Commencement:Site access 7 calendar days after commencement date

Completion Time:365 calendar days from commencement date

Defects Notification Period:365 calendar days

Delay Damages:0.05 percent of final Contract Price per day, maximum 10 percent of final Contract Price

Subcontracting Limit:Maximum 30 percent of contract value

Payment Terms

Currency:Euro (100 percent)

Advance Payment:10 percent of Accepted Contract Amount in one instalment within 42 days upon delivery of Advance Payment Guarantee. Repayment begins when interim payments reach 10 percent of Accepted Contract Amount less Provisional Sums, amortised at 20 percent.

Interim Payments:Minimum 3 percent of Accepted Contract Amount per certificate. Retention of 6 percent applied with limit of 6 percent of Accepted Contract Amount.

Tax Exemption:Contract is exempt from all taxes and duties including VAT, Special Consumption Tax, customs duties, and other charges pursuant to Framework Agreement between Republic of Turkey and European Union (2015). Contractor responsible for completing necessary formalities with relevant authorities.

Insurance Requirements

Third-Party Liability Insurance:Minimum €1 million per occurrence with unlimited number of occurrences. Must be insured within maximum 3 months after commencement date; otherwise contractor cannot receive interim payment certificates.

Personnel Insurance:€200,000 in case of death; €100,000 in case of injuries

Insurance Submission:Evidence of insurance due immediately (0 days); relevant policies due within 14 calendar days

Dispute Resolution

Dispute Adjudication Board (DAB):One sole member/adjudicator appointed ad hoc. If not agreed, nominated by President of Association of Turkish Consulting Engineers and Architects (ATCEA), Ahmet Rasim Sokak 35/2, Çankaya 06550 Ankara, Turkey.

Arbitration:Place of arbitration: Ankara, Turkey

Site Visit and Clarification Meeting

Site visit is optional but strongly recommended. Scheduled for 22-23 June 2026 at 10:00 local time. Clarification meeting is not applicable. Tenderers may submit questions in writing to Assoc. Prof. Dr. İsmail Raci Bayer, Department of Project Implementation, Ministry of Environment, Urbanisation and Climate Change, Mustafa Kemal Mahallesi 2082. Cadde No:52 Çankaya - Ankara, Turkey, email: abyd.ihale@csb.gov.tr, up to 30 June 2026. Contracting authority must reply at least 8 days before submission deadline. Questions and answers published on F&T Portal and contracting authority website ipa.csb.gov.tr.

Key Dates Summary

Important Notes for Applicants

Tenderers must examine carefully and comply with all instructions, forms, contract provisions and specifications in the tender dossier. Failure to submit complete tender with all required information and documentation within deadline will result in rejection. No account taken of reservations regarding tender dossier; may result in immediate rejection. Tenderers bear sole liability for examining tender documents with appropriate care and obtaining reliable information on conditions and obligations. No claim for altering tender amount entertained on grounds of errors or omissions in tenderer obligations.

Tenderers must provide all documents required by tender dossier without exception, complying strictly with conditions and provisions. Tenders not complying with requirements may be rejected. Tenderers must tender for whole of works; incomplete lot tenders not accepted. Variant solutions not considered. Tenderers must provide tender in language of procedure (English). Supporting documents not in official EU language should be translated into English.

Tenderers must declare they are not in exclusion situations and have no professional conflicting interests. False declarations may result in rejection and administrative sanctions including exclusion and financial penalties up to 10 percent of total estimated contract value. Contracting authority not bound to proceed with tender and reserves right to award only part of contract. Cancellation may occur if no qualitatively or financially worthwhile tender received, economic/technical parameters fundamentally altered, exceptional circumstances prevent execution, all technically compliant tenders exceed available resources, irregularities in procedure, or award not in compliance with sound financial management.

Tenderers must comply with ethics clauses including absence of conflict of interest, respect for human rights and EU values, environmental legislation, core labour standards, anti-corruption and anti-bribery requirements, and zero tolerance for sexual exploitation and abuse. Tenderers guilty of grave professional misconduct, fraud, corruption, or other criminal offences may be excluded. Contracting authority may suspend or cancel procedure if breach of obligations, irregularities or fraud discovered.

Personal data related to tender procedure processed in accordance with national legislation and financing agreement provisions. Data transferred to European Commission for monitoring and implementation purposes may be transmitted to bodies in charge of monitoring or inspection tasks. Controller for Commission processing is Head of Contracts and Finance Unit R4 of DG for Enlargement and Eastern Neighbourhood (ENEST). Privacy statement available at Privacy Statement.

Tenderers and related persons may be registered in Early Detection and Exclusion System (EDES) if in exclusion situations, with personal details communicated to relevant persons and entities. More information available at EDES Information.

Contact Information

For questions and clarifications:Assoc. Prof. Dr. İsmail Raci Bayer (Director/Head of IBFM), Department of Project Implementation, General Directorate of EU and Foreign Relations, Ministry of Environment, Urbanisation and Climate Change, Mustafa Kemal Mahallesi 2082. Cadde No:52 Çankaya - Ankara, Turkey. Email: abyd.ihale@csb.gov.tr. Fax: +90 312 474 03 52. For FIDIC Conditions of Contract in Turkish: ATCEA (Association of Turkish Consulting Engineers and Architects), Ahmet Rasim Sok. 35/2, Çankaya - 06550 - Ankara, Turkey. Phone: +90 (312) 440 89 70. Fax: +90 (312) 440 89 72. Email: atcea@atcea.org.tr.