Wastewater plan according to DIN 14095

We explain when a wastewater plan is mandatory, what it regulates, and why it is so important for fire safety.

1 December 2025 Fire Safety

A wastewater plan in accordance with DIN 14095 is a key component of preventive fire protection. The plan ensures that contaminated extinguishing water does not enter the sewage system or waterways in an uncontrolled manner, but is specifically retained, treated, or safely discharged.

Wastewater plans in accordance with DIN 14095

DIN 14095 classifies the wastewater plan as a so-called special plan within the fire department plan. The focus is on documenting the local wastewater network, including all pipes, retention facilities, and the connection area to the public sewer system or surface water inlet. The aim is to be able to react quickly and safely in the event of a fire – while protecting the environment and public infrastructure.

When is a wastewater plan required?

A wastewater plan must be drawn up if authorities require fire water retention as part of the building permit or fire protection planning. This applies in particular to:

  • Industrial and commercial enterprises with hazardous substances
  • Warehouses and transshipment points with water-polluting materials
  • Facilities with increased fire water consumption

The plan is drawn up after prior consultation with the responsible fire department or fire protection agency and the municipal utilities. This is the only way to ensure that the plan is practical and effective in case of an emergency.

Content & structure of a wastewater plan

A wastewater plan that complies with DIN 14095 contains the following information, among other things:

  • Description of the internal wastewater network
  • Location and dimensions of retention and separation systems
  • Description of the interface to the public sewer network
  • Information on substance quantities, potential contamination, and disposal routes
  • Measures in case of overload or emergencies

Frequently asked questions

to the wastewater plan DIN 14095

About the wastewater plan DIN 14095 Is a wastewater plan required?

In practice, wastewater plans are rare. However, they are mandatory if required as part of the building permit or fire protection planning.

Who draws up the wastewater plan?

The plan may only be drawn up by qualified specialist planners or fire safety experts – after an inspection of the property and in close consultation with the local fire department or fire safety authority.

What information must a wastewater plan contain?

Among other things, they must document the internal wastewater structure, retention facilities, the connection to the public network, and measures for retaining and treating firefighting water.

Trust in our expertise

A wastewater plan in accordance with DIN 14095 creates the conditions for safe, environmentally friendly, and legally compliant fire protection.

As an experienced service provider, CWS Fire Safety supports you in the creation, implementation, and maintenance of such plans—tailored to your individual operating situation.

 

Abwasserpläne nach DIN 14095-CWS Fire Safety-F-b

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