Wastewater disposal

Wastewater Disposal - Wastewater disposal involves the conveyance and treatment of wastewater (domestic and commercial wastewater) and stormwater (rainwater) from a property via the public sewer system to a wastewater treatment plant. It is an essential component of property development and is regulated in Germany by the respective municipal drainage regulations.

Obligation to Connect and Use

Property owners are generally subject to an obligation to connect and use: They are required to connect their property to the public sewer system and to dispose of the resulting wastewater via the public network. Decentralized disposal via small-scale treatment plants is permitted only in exceptional cases-such as in rural areas without sewer connections or where the cost of connection is proven to be disproportionately high.

The costs of wastewater disposal consist of two components:

• One-time connection fees (construction fee for initial connection): These are charged when a property is connected to the sewer system for the first time. The amount is based on the property area and the extent of use permitted under building regulations.
• Ongoing usage fees: These are calculated either on a consumption basis according to the fresh water standard (one cubic meter of fresh water consumption corresponds to one cubic meter of wastewater) or in the split fee model, separately for wastewater and stormwater.

Separate System and Combined System

There are two sewer systems in Germany: In the combined system, wastewater and stormwater are discharged together into a single sewer and routed to the wastewater treatment plant. In the separate system, separate sewers are used for wastewater (to the treatment plant) and rainwater (for infiltration or discharge into a body of water). The city of Nuremberg primarily operates a combined system but is increasingly converting to the separate system in new development areas.

The type of system is relevant for property owners, as in a separate system, an incorrect discharge (such as rainwater into the sewage pipe or vice versa) can lead to increased fees and fines. Anyone renovating their property should therefore be aware of the local system requirements.

Leak Testing of Private Sewer Lines

In many states and municipalities, property owners are required to have their private sewer lines inspected for leaks. Leaky pipes can contaminate soil and groundwater and are costly to repair. In Bavaria, leak testing is mandatory for pipes in water protection areas; in other areas, the municipality may introduce a testing requirement via ordinance.

Typical repair methods for defective underground pipes include pipe lining (no-dig method, without excavation) or traditional pipe replacement. The cost of a camera inspection ranges from 150 to 500 euros, while repairs can cost between 2,000 and over 10,000 euros, depending on the damage and method used.

Typical Costs of Sewage Disposal in Nuremberg

Cost Type	Typical Range	Note
One-time connection fee	€3,000-8,000	For initial connection, depending on location
Private underground pipeline (house connection)	€2,000-5,000	Costs borne by the owner
Ongoing wastewater fee	approx. €1.80-2.50/m³	Based on fresh water rates
Stormwater fee	€0.30-0.80/m² of sealed surface	Depending on the municipality
Camera inspection (leak test)	€150-500	Recommended every 10-20 years
Sewer line rehabilitation (pipe lining)	€2,000-10,000	Depending on length and damage

Practical tip for property owners in Nuremberg and Franconia

In many Nuremberg neighborhoods, wastewater fees are increasingly being switched to the split fee model: The fee is calculated separately for wastewater (based on fresh water consumption) and stormwater (based on sealed property area). Property owners can reduce the stormwater fee through de-sealing measures: Grass pavers instead of asphalt in parking lots, infiltration basins, cisterns with overflows, or green roofs reduce the taxable sealed area and thus permanently lower the fee burden. The Nuremberg City Drainage Authority (www.n-ergie.de) provides information on current fee rates and subsidy programs for rainwater harvesting.

We also recommend having the backflow prevention system serviced regularly, as heavy rain can cause wastewater from the overloaded sewer system to back up into basements. Damage caused by sewer backflow is only covered by building insurance if a functional backflow prevention system is installed and can be proven to have been maintained. Have the maintenance performed and documented annually by a specialized company.

Frequently Asked Questions

How much does the sewer connection cost?

The costs for connecting to the public sewer system vary considerably depending on the municipality and the scope of work. In the Nuremberg metropolitan region, one-time connection fees typically range from 3,000 to 8,000 euros, but in some cases may exceed this amount depending on the size of the property and the density of development. Added to this are the costs for the private property drainage system (pipes and connection shaft on your own property), which range from 2,000 to 5,000 euros depending on the size of the property and soil conditions. These costs are borne by the property owner.

Can I allow rainwater to infiltrate on my property?

In many municipalities, rainwater infiltration is expressly encouraged and is rewarded with reduced stormwater fees or even subsidy programs. The prerequisite is generally a water law permit under the Water Resources Act, as well as soil suitability for infiltration (no gravel or protected areas). Infiltration basins, infiltration trenches, or cisterns with an overflow to the sewer are common and proven solutions. The City of Nuremberg supports rainwater infiltration measures as part of its climate adaptation strategy.

Who is responsible for the pipes on my property?

Responsibility ends at the property line: Pipes on public land are maintained and serviced by the municipal waste management agency (N-Ergie/Stadtentwässerung Nürnberg). The pipes on private property-from the house to the public main line-are the sole responsibility of the property owner. Defective underground pipes must be repaired at the owner’s expense. Many municipalities now require regular leak tests for these private sections.

Back to the Real Estate Glossary.