Wastewater treatment plant discharge land line renewal works to be tendered 2026

Original: Atıksu arıtma tesisi deşarj kara hattı yenilemesi yaptırılacaktır

ANTALYA SU VE ATIKSU İDARESİ GENEL MÜDÜRLÜĞÜ

About this tender

The Antalya Su ve Atıksu İdaresi Genel Müdürlüğü (ASAT) is procuring the construction works for the renewal of the discharge lines at the Manavgat Wastewater Treatment Plant (Manavgat Atıksu Arıtma Tesisi Deşarj Kara Hattı Yenilemesi Yapım İşi). The tender is an open procedure under Law No. 4734 (Public Procurement Law), Article 19, with bids submitted only electronically via EKAP. Tender registration number (İKN) is 2026/1917467. Approximate scope: (1) about 4,100 m of Ø1200 mm HDPE land discharge line for the Manavgat WWTP, including excavation and backfill; (2) about 1,100 m of Ø800 mm HDPE deep-sea outfall line for the Mahmutlar WWTP, including underwater excavation, stabilization blocks and backfill; (3) supply and installation of 6 submersible wastewater pumps at the discharge pumping station and inlet lift station; and (4) supply and installation of manifold/collector works at the discharge pumping station. Works are located in Manavgat and Alanya districts of Antalya Province. Duration is 210 calendar days from site handover. Site handover occurs within 15 days of contract signature. The contract is a unit-price contract: bidders price each work item, and the total is the sum of quantity multiplied by unit price. Bids must cover the entire works package; partial bids are not accepted. Bid validity is 90 calendar days from the tender date. Electronic reverse auction will not be held. Consortium bids are not permitted. The detailed technical and administrative specifications are in the tender documents available on EKAP.

Bidder eligibility

Mandatory bid documents: bid letter; documents proving authority to bid (for legal entities, shareholder/partner and management details; for representation by proxy, the proxy's documents); provisional guarantee of not less than 3% of the bid price; joint venture declaration where applicable. Consortium bids are not allowed. Economic and financial standing: the most recent year-end balance sheet (the year before the tender year) or equivalent must show all three of the following together: current ratio (current assets / short-term liabilities) at least 0.75; equity ratio (equity / total assets) at least 0.15; and short-term bank debt to equity ratio below 0.50. Bidders who cannot meet these in the prior year may submit up to the last three years, with the average of the submitted years tested against the criteria. Turnover evidence for the year before the tender year must show total turnover of at least 25% of the bid price, or construction works turnover of at least 15% of the bid price; meeting either suffices. Technical and professional standing: work experience within the last 15 years under a contract with a monetary value, covering the tender work or similar work, of at least 50% of the bid price. Similar work is defined by the Similar Work Groups Communiqué (Resmi Gazete 27961, 11/06/2011) as AIV or AXI group works, or repair works of AIV or AXI group works. Accepted engineering and architecture disciplines: Environmental Engineering, Civil Engineering, Mechanical Engineering. Experience gained through a company held by a majority shareholder, or abroad outside the Law 4734 scope, requires additional documentation as specified in the tender documents.

How bids are scored

The contract is awarded to the most economically advantageous tender, considering price together with non-price factors. The tender specifies an abnormally low tender threshold coefficient (N) of 1.2. Bids below the threshold trigger a request for explanation under Article 38 of Law 4734. No weighting between price and quality is disclosed in the notice. Electronic reverse auction is not applied.

Key requirements

• ✓Discharge pipeline renewal and rehabilitation at wastewater treatment facility
• ✓Located in Merkez district, Antalya
• ✓Procurement under Turkish Public Procurement Law (4734 KİK), open tender procedure
• ✓Works category: water treatment and waste management infrastructure

Procurement contact

The notice names a procurement contact for clarification questions.

Relevant sectors

About this sector

Water funding covers supply, sanitation, wastewater treatment, water efficiency, catchment management and flood risk. A large share is public procurement for infrastructure and services, alongside grants for innovation and access in underserved areas. Bidders and applicants are typically assessed on technical capacity, operating experience and community impact.