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Empreitada “Redefinição do Sistema de Tratamento da ETAR de Santa Comba e reabilitação do Emissário de Ribeira das Hortas (SAR Santa Comba Dão)

Issued by AINTAR - Associação de Municípios para o Sistema Intermunicipal de Águas Residuais · via BASE — Portugal public procurement announcements (base.gov.pt)

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Published
6 Oct 2026
Closes
15 Dec 2026, 23:59 UTC
Value
EUR 3,466,694.56
Reference
DR 24605/2026
Location
Portugal
Sector
Construction & Infrastructure
Type
works

At a glance

AINTAR - Associação de Municípios para o Sistema Intermunicipal de Águas Residuais in Portugal has published a tender in construction & infrastructure: “Empreitada “Redefinição do Sistema de Tratamento da ETAR de Santa Comba e reabilitação do Emissário de Ribeira das Hortas (SAR Santa Comba Dão)”. Submissions close on 15 December 2026, 70 days from today. The stated value is EUR 3,466,694.56. Quote reference DR 24605/2026 in any correspondence with the buyer. 2 documents are attached to this notice. FreeTender has recorded 3 notices from this buyer since 2026, 3 of them currently open. There are 532 open construction & infrastructure notices in Portugal on FreeTender. Bids are submitted to the buyer through BASE — Portugal public procurement announcements (base.gov.pt), not through FreeTender.

Details

Object: Empreitada “Redefinição do Sistema de Tratamento da ETAR de Santa Comba e reabilitação do Emissário de Ribeira das Hortas (SAR Santa Comba Dão)

Contracting entity: AINTAR - Associação de Municípios para o Sistema Intermunicipal de Águas Residuais (NIPC 516132822)

Notice type: Anúncio de procedimento

Procedure: Concurso público

Contract type: Empreitadas de obras públicas

CPV: 45232460-4, Obras de saneamento

Base price: EUR 3,466,694.56

Proposal deadline: 15-12-2026 (date as given by BASE; the exact hour is in the DR announcement)

Diário da República: announcement no. 24605/2026, DR no. 193, series 2

Procurement documents / submission platform: https://www.acingov.pt

Proposals are submitted through the electronic procurement platform named in the announcement (registration required).

Context for bidders

We hold 3 notices from AINTAR - Associação de Municípios para o Sistema Intermunicipal de Águas Residuais, going back to October 2026 — 3 of them still open. There are 532 open Construction & Infrastructure tenders in Portugal. This one closes in 70 days.

Documents

Before you bid on this tender

A quick checklist to help you decide whether to bid and prepare a compliant submission for this construction & infrastructure opportunity. Always verify the details on the official source.

  • Confirm the exact closing date and time (and time zone) on the official portal — deadlines are strict and can be revised by a corrigendum.
  • Read the full notice and every attached document, including the scope, specifications and any bill of quantities or terms of reference.
  • Check the eligibility criteria — prior similar experience, annual turnover, certifications and registrations — and make sure you qualify before investing effort.
  • Prepare any earnest-money deposit (EMD) or bid security and the required formats early; missing or wrongly-formatted documents are a common cause of rejection.
  • Note how bids must be submitted (online or physical), in what format, and whether a digital signature or portal registration is required.
  • Watch for corrigenda and clarifications right up to the deadline — requirements and dates can change.
Common bidding mistakes to avoid →Writing a winning proposal

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