Erlaubnis für das Direkteinleiten von Niederschlagswasser in Gewässer beantragen

If you want to infiltrate rainwater or discharge it into a surface water body, you can apply for a water permit from the relevant water authority.

If you wish to infiltrate rainwater or discharge it into a surface water body, you generally require a permit under water law.

Rainwater is water that runs off from built-up or paved areas.

Above-ground bodies of water are rivers, lakes, canals, streams, ditches and ponds.

Permission for infiltration is required if the infiltration may have a detrimental effect on the groundwater quality.

The permit requirement does not apply if no detrimental changes to the groundwater are to be expected. You then only have to notify the responsible authority of your project. Contact the authority if you are unsure whether you need to apply for a permit.

The permit specifies the type and extent of use. It may be subject to conditions and ancillary provisions. In contrast to an authorization, a permit can be revoked by the authorities.

• Application
• Calculations on the load and need for treatment of the rainwater
• Hydrogeological report (for infiltration)
• Description, illustration, dimensioning of the infiltration system
• Proof that infiltration is not possible (for discharge into surface waters)
• Details, illustration and mathematical proof of the required rainwater retention facility
• General plan
• Site plan
• Extract from the cadastral map
• Drawing of the structure or facility
• Accompanying nature conservation planning, including entry in the compensation area register for new facilities
• Technical contribution to the Water Framework Directive

• The harmfulness of the precipitation water is kept as low as possible according to the state of the art.
• The discharge is compatible with the requirements for water characteristics and other legal requirements.
• If necessary, installations or other facilities are set up and operated in order to comply with these requirements.

You can apply for a permit for the direct discharge of precipitation water from the responsible authority. The general procedure is as follows:

• Send your application for a permit with the required documents to the responsible water authority.
• This
  • checks that your application and documents are complete and contacts you if any information or documents are missing,
  • examines your application from a water management and water law perspective and involves other authorities if necessary.
• You will receive
  • a permit or
  • a rejection notice.
• You will also receive a fee notice.
• You pay the fee.

The processing time depends in particular on the quality and scope of your application and the documents.

There is no statutory deadline. Apply for the permit in good time before starting your project.

Contradiction

• Direct discharge of precipitation water into bodies of water Permit
• A permit under water law must be applied for from the competent authority for the seepage of rainwater into the groundwater or the discharge of rainwater into a body of water above ground.
• Precipitation water is water that runs off from built-up or paved areas
• Surface waters are rivers, lakes, canals, streams, ditches and ponds
• Prerequisite: No damage to groundwater or surface waters is to be expected as a result of the project
• Any necessary documents:
  • Calculations on the pollution and need for treatment of the rainwater
  • Hydrogeological report (for infiltration)
  • Description, illustration, dimensioning of the infiltration system
  • Proof that infiltration is not possible (for discharge into surface waters)
  • Details, illustration and mathematical proof of the required rainwater retention facility
  • General plan
  • Site plan
  • Extract from the cadastral map
  • Drawing of the structure or facility
  • Accompanying nature conservation planning, including entry in the compensation area register for new facilities
  • Technical contribution to the Water Framework Directive
• Application is subject to a fee
• Responsible: competent authority of the respective federal state