Water supply system; notification of construction, commissioning, modification, transfer of ownership or decommissioning

The operator of a central water supply system, a decentralized water supply system, an own water supply system or, if the drinking water is provided as part of a public activity, a building water supply system must notify the public health department in writing or electronically of the following (Section 11 TrinkwV):

• the construction of the water supply system,
• the commissioning and recommissioning of the water supply system,
• the structural or operational modification of parts of the water supply system that carry drinking water, if this modification can have a significant impact on the quality of the drinking water,
• the transfer of ownership or the right to use the water supply system to another person and
• the decommissioning of the water supply system or parts of the water supply system.

Non-drinking water systems (e.g. service water system for rainwater utilization) that are installed in the household in addition to the drinking water system must also be notified (§ 12 TrinkwV).

Please give priority to using the online service via the button above for the "Display of water supply systems and non-drinking water systems".

A water supply system is constructed, commissioned, decommissioned, structurally and structurally modified or the ownership or right of use is transferred.

• for construction, commissioning and structural and operational changes: no later than four weeks before the start of the measure.
• if the ownership or right of use of the water supply system is transferred to another person: no later than four weeks before the transfer of ownership or right of use.
• for decommissioning: within three days of decommissioning.

If knowledge is only obtained after the above-mentioned deadlines have expired, the notification must be made immediately after becoming aware of the circumstances requiring notification.

• § Sections 11 and 12 of the Ordinance on the Quality of Water for Human Consumption (Drinking Water Ordinance - TrinkwV)
• Council Directive 98/83/EC of November 3, 1998 on the quality of water intended for human consumption
• Act on the Prevention and Control of Infectious Diseases in Humans (Infection Protection Act - IfSG)

• Bavarian state list of approved drinking water testing laboratories

  List of drinking water testing laboratories in Bavaria that meet the requirements of Section 15 (4) of the Drinking Water Ordinance

• Drinking water

The aim of the Drinking Water Ordinance (TrinkwV) is to ensure that the water supplied to consumers is of high quality in microbiological, chemical and physical terms. This is intended to protect human health from adverse effects that may result from the contamination of drinking water.

Quality assurance

The operators of water supply systems are responsible for the flawless quality of the drinking water they supply.

They must ensure this by carrying out their own tests on the drinking water. The scope of testing covers microbiological, chemical and physical parameters. The tests may only be carried out by test centers approved for drinking water testing, which are approved following an inspection by the competent body under state law. In Bavaria, the State Office for Health and Food Safety is designated as the competent body under state law in accordance with Section 69a of the Competence Ordinance. This office publishes the current list of approved drinking water testing laboratories on its website.

Irrespective of this, the water supply systems are officially monitored by the health authorities.

Consumer information

The TrinkwV stipulates that consumers must be informed about the quality of the drinking water at least once a year by the operator of the water supply system by means of suitable and up-to-date information material. Individual results of the drinking water tests must be made available to the affected consumers on request in accordance with Section 45 Paragraph 3 Sentence 4 TrinkwV. In the case of water treatment, the obligation to provide information also includes the treatment substances and disinfection processes used. Furthermore, consumers must be informed of any exceptionally permitted deviations from the requirements of the Drinking Water Ordinance or restrictions on use.

• Water protection area; determination
• Legionella analysis; indication that the technical action value has been reached
• Drinking water supply systems, baths and bathing water; hygiene monitoring