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Design and Realization of Optimization rwzi Sliedrecht

Waterschap Rivierenland · Open · 1 lots · 394796
Type
Works
45252000
Estimated value
€ 10M
estimated
To deadline
-134d
Feb 3, 2026 · 12:00
Knock-outs
n/a
exclusion grounds
Award basis
Best price-quality ratio
Assess manuallyconfidence low

Design and realization phase for the future-proof ‘rwzi Sliedrecht’ of Waterschap Rivierenland. Phase 1 includes a joint preliminary and final design (VO/DO), Phase 2 consists of engineering and realization under UAV-GC 2025, provided the price of both phases is in agreement.

Works · Open · European procedure

European
Contracting authority
Waterschap Rivierenland
Contract type
Works
Open
Estimated value
€10,000,000
estimated value
Submission deadline
February 3, 2026
12:00
Scope
European
European procedure
Lots
1
1 lots
Main CPV code
45252000
Location
Netherlands
CharacteristicsCPV 45WorksEU tender

01What is being requested

Design and realization phase for the future-proof ‘rwzi Sliedrecht’ of Waterschap Rivierenland. Phase 1 includes a joint preliminary and final design (VO/DO), Phase 2 consists of engineering and realization under UAV-GC 2025, provided the price of both phases is in agreement.

Assignment description de assignment description to make the rwzi future-proof until at least 2040, renovation, adjustments and expansions are planned for the rwzi.     The water line of the current rwzi is at the end of its technical lifespan. The civil structures require inspection and repair. Mechanical components are due for replacement.   With the renovation works, WSRL also aims to increase the capacity of the rwzi so that the rwzi can handle the projected increase in biological load. The current capacity of the rwzi is 48,000 i.e. (at 150 grams TZV) and hydraulically 1,650 m3/h. The

45252000€ 10MWorks
1Design and Realization of Optimization rwzi Sliedrecht€10,000,000

02Exclusion grounds

Exclusion grounds — consult the ESPD
  • No specific exclusion grounds were extracted. In a European tender, the mandatory and discretionary grounds of art. 2.86/2.87 of the Dutch Procurement Act almost always apply — check the European Single Procurement Document (ESPD).

03Value in context

€10,000,000

04Likely competitors

#Likely bidderFitWins
1Boskalis Nederland B.V.SME9569×
2Dura Vermeer Infra Regionale Projecten BVSME9458×
3Van Hattum & Blankevoort N.V.SME9319×
4Van Oord Nederland BVSME8919×
5Den Ouden Aannemingsbedrijf B.V.SME8923×
6Ploegam B.V.SME8922×

05Legal themes that may be relevant here

06Frequently asked questions

What is the structure of the assignment and how are the phases divided?
The assignment consists of two phases. Phase 1 concerns the joint development of the preliminary design (VO) and the final design (DO) in a construction team. Phase 2 includes the engineering and the realization, subject to agreement on the contract sum for phase 2 after completion of the DO.
Under which conditions are the different phases carried out?
Phase 1 (Design) is carried out under the conditions of the AWVODI. Phase 2 (Engineering & realization) is carried out under the conditions of the UAV-GC 2025, provided the price of both phases is in agreement.
What are the main technical objectives of the renovation?
The biological capacity of the rwzi must be expanded from 48,000 i.e. to 73,000 i.e. to be able to handle the projected load in 2033. This will be realized by the installation of a fine screen, recirculation in the aeration tanks and the addition of extra aeration plates.
Which works will be carried out on the existing installation?
The works include the renovation of the water line and parts of the sludge line, inspection and repair of civil structures, and the replacement of mechanical components to make the rwzi future-proof until at least 2040.

Automatically compiled from the official tender data and documents.

07Estimated value versus the market

p25
€ 1,4 mln
median
€ 3,6 mln
p75
€ 9,1 mln
€ 10 mln

Gegunde waarden in CPV 45 · werken n=3159