Obtain a permit for a rainwater harvesting system
Permit or notification for a rainwater harvesting system (cistern) with the local water authority.
Wo wohnen Sie?
Damit wir Obtain a permit for a rainwater harvesting system mit dem zuständigen Untere Wasserbehörde in Ihrer Stadt anzeigen können.
Oder Großstadt wählen:
Sie werden zur geführten Suche weitergeleitet – mit Kontaktdaten, Termin und nächsten Schritten für Obtain a permit for a rainwater harvesting system.
Quick answer
- 1
Documents you need
Identification card or passport · Form / Application
- 2
Responsible authority
The authority of your main residence
- 3
How to do it
In person or by post at the office
- 4
Costs
Kostenlos bis 150 € je nach Leistung
How to proceed
- 1
Report the facility to the Lower Water Authority
In most states, a notification is sufficient; no permit is required.
- 2
Check technical requirements
Separation of drinking water, backflow prevention, and pipe labeling.
- 3
Operation of the system
Upon receipt of the report and, if necessary, confirmation from the authorities.
Responsible authority
The authority of your main place of residence is responsible.Find authority →
The essentials before applying
Who is eligible?
Homeowners who want to use rainwater for flushing toilets, watering their gardens, or running their washing machines.
Income limit
Processing time
Nationwide: approx. approx. 2 weeks
Success rate
approx. 90.0 % (estimate)
Most common mistakes
- •System commissioned without a display
- •No backflow prevention
Common reasons for rejection
- •Lack of separation between the drinking water and stormwater systems
Alternatives
- Check related services in the application assistant
- Use social counselling before applying
If rejected
File a written objection within 30 days – with reasons why the decision is wrong and any missing evidence.
Questions & Answers
How much does it cost to get a rainwater harvesting system approved?▼
Free up to €150, depending on the service.
How long does it take to get a rainwater harvesting system approved?▼
Typically about 14 business days—depending on the agency and its workload.
Freshness & source
- Maintenance
- Continuously reviewed & updated
- Source
- BMWSB
- Data quality
- 100 %