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Wastewater disposal via small wastewater treatment plants; notification of the test result
Small wastewater treatment plants on your own property must be regularly inspected by a recognized private expert. The test result must be reported to the lower water authority.
Responsible for you
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Procedure details
Description
State-of-the-art small wastewater treatment plants usually consist of a mechanical treatment stage and a downstream biological wastewater treatment stage. The wastewater is first fed into a pit in which the solid substances settle; the dissolved organic substances are broken down by microorganisms in a downstream biological treatment stage. If further purification requirements need to be met in individual cases (e.g. nitrogen elimination, phosphorus elimination, wastewater sanitization), more complex small wastewater treatment plants must be constructed and operated.
Small wastewater treatment plants on your own property are generally built and operated by the house or property owner. In order to ensure good cleaning performance in the long term, it is necessary to regularly maintain and monitor the small wastewater treatment plants. This task is often assigned to specialist companies as part of a maintenance contract, especially in the case of technically complex systems. The faecal sludge from the mechanical treatment stage must be disposed of properly on a regular basis.
Every 2 years (4 years for systems without defects at the last inspection), small wastewater treatment plants must be inspected by a recognized private expert in water management (PSW); the inspection result must be certified to the lower water authority (district administrative authority).
Required documents
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Test report of an expert (2 - 4 years)
Legal bases
Appeal
Administrative court action
Related links
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Broschüre "Abwasserentsorgung von Einzelanwesen"Kostenlose Bestellung oder Download im Info-Shop des Bayerischen Staatsministeriums für Umwelt, Gesundheit und Verbraucherschutz
Related issues
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Wastewater; payment of wastewater chargesYou pay for the disposal of the wastewater you produce via (ongoing) wastewater charges.
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Wastewater; payment of drainage contributionsYou co-finance the construction and provision of such a facility in accordance with the principle of solidarity by making contributions to the public drainage system.
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Wastewater disposal; application for exemption or partial exemption from compulsory connection and useThe obligation to connect to and use a public drainage system ensures proper public wastewater disposal.
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Wastewater disposal; application for a property connectionYou connect your property to the public drainage system by means of a property connection.
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Wastewater disposal; implementationWastewater disposal is carried out by the municipalities and cities or municipal wastewater associations.
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Wastewater disposal; payment of a small discharger levy
According to the federal and state wastewater levy law, the municipalities are obliged to pay a wastewater levy to the state for small dischargers.
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Domestic and small wastewater treatment plants; consultingYou can obtain information on the proper disposal of faecal sludge from domestic or small sewage treatment plants from your district administrative authority.
Status: 02.05.2025
Editorial responsibility Bayerisches Staatsministerium für Umwelt und Verbraucherschutz
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