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370000 Sewerage
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This type includes:
- operation of sewer systems or sewer treatment facilities
- collecting and transporting of human or industrial waste-water from one or several users, as well as rain water by means of sewerage networks, collectors, tanks and other means of transport (sewage vehicles, etc.)
- emptying and cleaning of cesspools and septic tanks, sinks and pits from sewage; servicing of chemical toilets
- treatment of waste-water (including human and industrial wastewater, water from swimming pools, etc.) by means of physical, chemical and biological processes like dilution, screening, filtering, sedimentation, etc.
- maintenance and cleaning of sewers and drains, including sewer rodding
This type excludes:
- decontamination of surface water and ground-water at the place of pollution (see 390000)
- cleaning and unblocking of drainpipes in buildings (see 4322)
chemical toilets, maintenance; emptying cesspits; purification of wastewater; purification plants, works; rainwater in sewerage system, collectors, containers; septic tanks, emptying and cleaning; sewage disposal,; sewer system, sewer systems, maintenance and cleaning; sewerage system cleaning, maintenance; waste water treatment, sewage treatment, effluent disposal, physical, chemical, biological; waste water, collection, transport; waste water, sewerage, dilution, screening, filtering, sedimentation; wastewater, purification