Awarded

Construction and installation
NPK 151 Construction works for utility mains
NPK 211 Excavation and earthworks
+1

IWB, Wenkenköpfli water reservoir

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Location: Canton BS
Procuring office: IWB Industrielle Werke Basel

Go to the official tender

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 11.09.20263 bids
- Walo Bertschinger AG, FrenkendorfCHF 2’765’525.60 incl. VAT

Awards of this contracting authority

Justification

Die massgebenden Merkmale und Vorteile des berücksichtigten Angebots sind: • ZK 1: Angebotspreis: erreichte Anzahl Punkte: 4562.2 von max. 5000 Punkten (Gewichtung 50%) • ZK 2: Vergleichbarkeit Referenzauftrag: erreichte Anzahl Punkte: 3000 von max. 3000 Punkten (Gewichtung 30%) • ZK 3: Hygieneplan: erreichte Anzahl Punkte: 1000 von max. 1000 Punkten (Gewichtung 10%) • ZK 4: Nachhaltigkeit: erreichte Anzahl Punkte: 400 von max. 1000 Punkten (Gewichtung 10%) Total: 8962.2 von max. 10 000 Punkten

AI summary

Pro

With Pro, an AI summarises this tender: services, requirements, conditions, dates and award criteria, with key figures, a timeline and the weighting, each with the literal quote from the publication.

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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

Gegenstand der Beschaffung ist der Neubau des Reservoirs Wenkenköpfli, bestehend aus folgenden Elementen:

· Baustelleneinrichtung

· Abbruch / Demontage

· Baugrubensicherung und Aushub

· Erstellung der 2 Wasserkammern

· Erstellung Bedienhaus (Reservoir Gebäude)

· Werkleitungsgraben mit Spundwand, Sicherung und Aushub

· Erstellung von Werkleitungen und Schächten

Das unterirdische Bauwerk besteht aus einem Stahlbetonbau mit einer Wandstärke von 40-45 cm. Es umfasst 2 Reservoir Kammern mit einem Nutzvolumen von je 300m3 und ein Bedienhaus mit oberirdischem Zugang.

Vgl. zudem den Anhang A2 Leistungsverzeichnis.

Die Auftragsvergabe erfolgt vorbehaltlich der vorliegenden Baugenehmigung.

Key facts, codes and options

Type of contract: Construction and installation
Type of construction: Civil engineering
Construction service: Execution
Procedure: Open procedure
Trades: NPK 151 – Construction works for utility mains
NPK 211 – Excavation and earthworks
NPK 241 – In-situ concrete construction
OAG 4.3 – Water supply
CPV: CPV 45000000 – Construction workCPV general: general code without a field
CPV 45100000 – Site preparation work
CPV 45200000 – Works for complete or part construction and civil engineering work
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

Water supply, all of Switzerland, last 12 months

55 awards, bids (median): 3.

Awards: Water supply

Range of award prices

Water supply, all of Switzerland, last 12 months

CHF 151’51610 % of the prices were lower

CHF 473’739Median: half were lower

CHF 1’841’65310 % of the prices were higher

8 out of 10 award prices were between CHF 151’516 and CHF 1’841’653.

From 46 published award prices in CHF from 12.11.2025 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: 37172
Publication number: 37172-02
Covered by international agreements: No
TED (EU): Publication on ted.europa.eu (opens in a new tab)

Checked against simap: 10.11.2026, 18:02

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More in the guide

Award, reasons and appeal

Contract awards in Basel-Stadt: monthly reports

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