How Often Should a Sewer Be Cleaned?
28.02.2025
The goal of regular sewer cleaThe goal of regular sewer cleaning is to minimize maintenance costs. However, the cleaning intervals cannot be generally defined, as they depend on various factors:ning is to minimize maintenance costs. However, the cleaning intervals cannot be generally defined, as they depend on various factors:
- Construction type of the drainage system
- Location of the property
- Size of the drainage system
- Age and condition
- Type of use of the drainage system
- Requirements of users and owners
- Environmental and water protection regulations
- Slope of drainage pipes
Additionally, the intervals must be adjusted dynamically to changing conditions. Continuous monitoring of the results is therefore necessary.
Guideline Values
| Object | Deposits | Cleaning Method | Interval |
|---|---|---|---|
| Kitchen, bathroom, and toilet drains, wastewater downpipes | Fat | Mechanical cleaning | As needed; drains every 5-10 years, downpipes every 10-20 years |
| Terrace and flat roof drains, rainwater downpipes | Lime, concrete efflorescence | Mechanical cleaning, high-pressure cleaning | 1-3 years |
| Laundry room and floor drains | Detergent residues, textile fibers | Mechanical cleaning, high-pressure cleaning | 1-5 years |
| Main pipes, inspection shafts (private drainage systems) | Fat, hard deposits, toilet paper, sand | High-pressure cleaning | 2-5 years |
| Percolation pipes | Hard deposits, lime | High-pressure cleaning | 1-3 years |
| Sludge collectors on private properties | Sludge, sand, gravel, organic matter | Suction and rinsing | 2-5 years |
