Translations:Regenwassernutzung/240/en

Practical execution

Whereas with connection to a higher infiltration and retention system, a lift station is technically required without question, it is the customer who decides if a simple backflow preventer is sufficient for connection to a mixed water system. The risk of faecal contamination with backwater from the mixed water sewer is relative since generally the cistern will be full during overflows from the sewer system. Therefore the contamination from these rainfall events is severly diluted.