Building and Developing
What is the difference between a foul sewer and a surface water sewer?
Foul & Surface water sewer
The foul sewer carries used wastewater to a sewage works for treatment. The surface water sewer carries uncontaminated rainwater directly to a local river, stream or soak away.
Only rainwater run off should be connected to a surface water sewer. All other waste water from sinks/toilets/baths/showers/washing machines/dishwashers/process water should be connected to a foul sewer.
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