Notification of start of work on site drainage
If you wish to carry out work on property drainage systems, the company carrying out the work must notify the municipal drainage department before starting construction.
Course description
It is necessary to register works so that the field staff (inspection supervisors) are made aware of a construction project. Upon registration, the contractors are informed which inspection supervisor is responsible for the site and who they should contact to obtain approval for the leak-tightness test they are to carry out. Such approval also provides the client with confirmation from an independent body that the tested pipe sections are leak-tight.
Which works on which parts of the system must be registered? In principle, works on parts of the system subject to authorisation must be registered:
- Pipes and manholes laid underground.
- Pipes in or beneath the floor slab.
- Pipes below the backflow level (usually the top of the road surface at the connection to the municipal sewer).
- Installation of wastewater treatment systems (such as separators).
Work that must be reported:
- New installations, alterations or refurbishments.
- Pressure tests/leak-tightness tests required in authorisation notices or in correspondence from Münchner Stadtentwässerung.
- Pressure tests on commercially used properties.
- General inspections of wastewater treatment systems.
What needs to be taken into account regarding stormwater? The same requirements apply to stormwater pipes connected to the municipal sewerage system as to sewage pipes (see above). It is also essential to observe the regulations governing the handling of stormwater.
When constructing infiltration systems, the following points must be observed:
- If a permit is required for the infiltration system, a water law permit for infiltration must be obtained before work commences. Any conditions and instructions must be observed.
- If areas from which rainwater was previously channelled into the municipal sewer system are disconnected from the sewer system, this work must be reported so that a recalculation (reduction) of the rainwater charges can be carried out. In addition, a site plan must be submitted showing the infiltration systems and the disconnected pipes marked accordingly.
Important note
Münchner Stadtentwässerung first checks whether the notified work is authorised. Only the feedback from the responsible team leader authorises the start of work.
Prerequisites
- Work must be notified at least 24 hours before the start of work. In the case of excavations on public land ( construction of a connecting sewer), a special use permit must be obtained in advance. The work notification must be submitted at least 5 working days in advance!
- To use the online form, a one-off registration with our construction supervision department is required (registration form PDF). Upon registration, an MSE-4 company number is provided, which must be entered in the online form. Registration is not a so-called authorisation; there is no examination of professional suitability. It merely serves to permanently simplify the process of work commencement notification.
- Construction or modification of a drainage system:Approved drainage plans must be available.
- Renovation of existing systems: If rainwater is discharged into the sewer, it must first be checked whether the rainwater can be separated from the sewer and infiltrated (or otherwise utilised) on the property.
- Construction of infiltration systems: If the infiltration is subject to authorisation, a water law permit for infiltration must be obtained before work begins. Conditions and instructions must be observed.
- Excavations in public ground: The necessary authorisations have been obtained. Detailed information here: Construction of connecting sewer
Required documents
- For excavations in public ground: See production of connection sewer
- For general inspection: Proof of expertise
Questions & Answers
proof of expertise must be presented for general inspections. Otherwise, the following applies: work on property drainage systems may be carried out by anyone who has the necessary expertise and equipment to lay or renovate drainage pipes. A so-called authorisation of companies is not required in the area of the City of Munich. Accordingly, there is no list of authorised companies.
information on our website: Finding companies for planning, construction and renovation
you can view as-built plans and order copies from our plan management and information centre.
In the course of a construction project, there may be interventions in the groundwater for which a permit under water law is required. The Department of Climate and Environment is responsible for this.
As a rule, pumped groundwater must be infiltrated. If infiltration is not possible and groundwater has to be temporarily discharged into the municipal sewer, coordination takes place via the Munich Municipal Drainage Fees Office: gebuehrenbuero.mse@muenchen.de
you can apply for a temporary sewer connection for sanitary containers.
the permanent or temporary sealing (construction pit protection) of sewer connections is carried out by Münchner Stadtentwässerung. Further information here: Closure of sewer connections.
if it is necessary to enter the public sewer, permission must be obtained in advance: Entering the municipal sewer