National tender (below the EU thresholds) · Electrical engineering
Renovation of the Biology Section of the Roßdorf Wastewater Treatment Plant ? Lot 1 Mechanical Engineering, Lot 3 EMC/Control Technology, Lot 5 Precipitant Dosing Station
Original title: Sanierung der Biologie der Kläranlage Roßdorf ? Los 1 Maschinentechnik, Los 3 EMSR-Technik, Los 5 Fällmitteldosierstation
“Renovation of the Biology Section of the Roßdorf Wastewater Treatment Plant ? Lot 1 Mechanical Engineering, Lot 3 EMC/Control Technology, Lot 5 Precipitant Dosing Station” is a national public tender in Kläranlage Roßdorf, Hesse. The deadline for offers is Tuesday, 17 November 2026, in 16 days. Procedure: Public tender (German national open procedure), published nationally (below the EU thresholds).
- Deadline
- 17 November 2026, 16 days left, 11:15
- Published
- 15 October 2026
- Procedure
- Public tender (German national open procedure)
- Notice
- National
- Type of contract
- not stated
- Estimated value
- not published
- Place of performance
- Kläranlage Roßdorf, Hesse
- 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
For the Roßdorf wastewater treatment plant, mechanical engineering, EMC/control technology, and a precipitant dosing station are being procured.
- Lot 1 includes mechanical engineering equipment such as pumps, agitators, and aeration systems.
- Lot 3 involves renewal of the electrical and control technology as well as a photovoltaic system.
- Lot 5 is a dosing station for ferric chloride for phosphorus elimination.
- Bids can be submitted for individual or multiple lots.
- The wastewater treatment plant will remain operational during all work.
Summary made from the German notice and checked against it; the German original is authoritative.
Dates of this tender
| Published | Thursday, 15 October 2026 |
|---|---|
| Deadline | Tuesday, 17 November 2026, 11:15 |
Conditions stated in the notice
| Legal basis | German national rules (VOB/A) |
|---|
Service by CPV code
- 45252100 Sewage-treatment plant construction work
- 45252200 Purification plant equipment
- 45315100 Electrical engineering installation works
Questions and answers
When is the deadline for offers?
Until Tuesday, 17 November 2026, 16 days left. The exact time and how to submit are in the original notice, which is authoritative.
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.
Where is the contract performed?
The place of performance is Kläranlage Roßdorf, Hesse.
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.
Which rules apply?
German national procurement rules below the EU thresholds (VOB/A, UVgO or VOL/A) and the state procurement law.
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Sources
Notice: Bekanntmachungsservice des Bundes (oeffentlichevergabe.de), retrieved 31 October 2026. All information without guarantee; the original notice is authoritative.