Submission General Planner – Expansion of Seeztal Wastewater Treatment Plant

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Location: Canton SG
Procuring office: Abwasserverband Seeztal

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Awarded

According to the simap publication. Values that are not given are deliberately missing here.

Awarded to

As published on simap.ch: winner and price (with or without VAT, as stated).

Award of 20.04.20264 bids
- Kuster + Hager Ingenieurbüro AG St. Gallen, St. GallenCHF 7’309’445.25 incl. VAT

Awards of this contracting authority

Justification

Anhand der Bewertung aller Kriterien und deren Gewichtung ist das Angebot von Kuster + Hager Ingenieurbüro AG, Oberstrasse 222, 9014 St. Gallen das vorteilhafteste Angebot.

AI summary

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In brief
Services
Requirements
Conditions
Dates
Award criteria

An example of the structure without content: no summary is stored for this tender yet.

What is being procured?

Scope of work

Da die beiden Kläranlagen ARA Seez und ARA Walenstadt in den nächsten Jahren altersbedingt zu erneuern und kapazitätsbedingt auszubauen sind, beabsichtigt der auf anfangs 2024 gegründete Abwasserverband Seeztal, die Einzugsgebiete der ARA Seez mit den Gemeinden Flums, Mels, Quarten und einem Teil von Walenstadt sowie der ARA Walenstadt am Standort der heutigen ARA Seez zusammenzuführen und eine neue, zukunftsorientierte Kläranlage zu bauen. Dazu liess der Abwasserverband Seeztal zwei Vorprojekte erarbeiten, nämlich ein Vorprojekt «ARA Seeztal» sowie ein Vorprojekt «Anschluss Walenstadt» mit Pumpwerk und Regenüberlaufbecken in der heutigen ARA Walenstadt und Druckleitung zur neuen Kläranlage sowie Rückbau der ARA Walenstadt.

Die vorliegende Ausschreibung «ARA Seeztal» definiert die für die Planung und Realisierung des Projektes ARA Seeztal notwendigen Planungsleistungen, welche als Generalplanungsmandat vergeben werden. Davon ausgenommen sind wegen der Schnittstelle zum Projekt «Anschluss Walenstadt» die Leistungen der Elektrofachplanung.

Key facts, codes and options

Type of contract: Service
Procedure: Open procedure
Trades: Not evident from the available publication data.
CPV: CPV 90400000 – Sewage services
Options: Not evident from the available publication data.
Variants: Not evident from the available publication data.
Partial offers: Not evident from the available publication data.

TEXFY assessment: Products, installations, quantities, technical specifications and exclusions are not structured fields of the publication. TEXFY does not analyse the free text on them: check the original text and the tender documents.

Market data for this service

From awards published on simap.ch, without rankings and without rating companies.

Comparable awards

Wastewater treatment plants, canton of St. Gallen, last 12 months

8 awards, bids (median): 2.5.

Awards: Wastewater treatment plants

Range of award prices

Wastewater treatment plants, all of Switzerland, last 12 months

CHF 207’05110 % of the prices were lower

CHF 681’396Median: half were lower

CHF 5’676’86310 % of the prices were higher

8 out of 10 award prices were between CHF 207’051 and CHF 5’676’863.

From 178 published award prices in CHF from 13.11.2025 to 02.11.2026, with or without VAT, as published. A single contract can differ widely.

Official source

Go to the official tender

simap project number: 30027
Publication number: 30027-02
Covered by international agreements: Yes

Checked against simap: 10.11.2026, 18:02

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More in the guide

Award, reasons and appeal

Contract awards in St. Gallen: monthly reports

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