National tender (below the EU thresholds) · Building construction
Wastewater Treatment Plant (WWTP) Twistringen | Conversion of Aeration and Precipitation Agent Station | Lot 1 - Structural Part
Original title: Kläranlage (KA) Twistringen | Umbau Belebung u. Fällmittelstation | Los 1 - Baulicher Teil
National public tender in Germany: “Wastewater Treatment Plant (WWTP) Twistringen | Conversion of Aeration and Precipitation Agent Station | Lot 1 - Structural Part” in Twistringen, Lower Saxony. The deadline for offers is Friday, 6 November 2026, in 5 days. Procedure: Public tender (German national open procedure), published nationally (below the EU thresholds).
- Deadline
- 6 November 2026, 5 days left, 09:30
- Published
- 6 October 2026
- Procedure
- Public tender (German national open procedure)
- Notice
- National
- Type of contract
- not stated
- Estimated value
- not published
- Place of performance
- Twistringen, Lower Saxony
- Source, last checked
- oeffentlichevergabe.de, 31 October 2026
Contracting authority and documents
Contracting authority only with access
Original notice (German)Tender documents on the procurement platformIn short
Construction work for the conversion of the aeration and precipitation agent station at a wastewater treatment plant.
- Lot 1 for the structural part
- Conversion of the aeration plant
- Conversion of the precipitation agent station
- Construction work for wastewater treatment plants
Summary made from the German notice and checked against it; the German original is authoritative.
Questions and answers
When is the deadline for offers?
Until Friday, 6 November 2026, 5 days left. The exact time and how to submit are in the original notice, which is authoritative.
In which language are the documents and the offer?
Expect German. The accepted languages are stated in the notice, and certificates in another language may have to be submitted with a translation.
Where is the contract performed?
The place of performance is Twistringen, Lower Saxony.
Which rules apply?
German national procurement rules below the EU thresholds (VOB/A, UVgO or VOL/A) and the state procurement law.
Is this tender open to foreign companies?
Yes, nothing in German procurement law limits national tenders to German bidders. This one is below the EU thresholds and published only in Germany, so it is easy to miss from abroad.
Deadlines and dates
| Published | Tuesday, 6 October 2026 |
|---|---|
| Deadline | Friday, 6 November 2026, 09:30 |
Conditions stated in the notice
| Legal basis | German national rules (VOB/A) |
|---|
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Service by CPV code
- 45000000 Construction work
- 45220000 Engineering works and construction works
- 45232420 Sewage work
- 45232421 Sewage treatment works
- 45252127 Wastewater treatment plant construction work
Sources
Notice: Bekanntmachungsservice des Bundes (oeffentlichevergabe.de), retrieved 31 October 2026. All information without guarantee; the original notice is authoritative.