Sewerage

This class includes:

• operation of wastewater treatment facilities for reuse (e.g. of agricultural, industrial and road cleaning wastewater or collected rainwater), or for artificial recharge or augmentation of groundwater bodies
• collection and transport of wastewater from users (e.g. households or industrial units)
• collection and transport of rainwater by means of sewerage networks, collectors, tanks and other means of transport (e.g. sewage vehicles, etc.)
• maintenance and cleaning of sewers and drains, including sewer rodding

This class also includes:

• freeze-drying of sewage sludge by wastewater treatment plants
• emptying and cleaning of cesspools and septic tanks, sinks and pits from sewage
• servicing of chemical toilets

This class excludes:

• further treatment of sludge extracted from wastewater, see division 38
  • anaerobic digestion, see 38.2
  • aerobic treatment, such as composting, see 38.21
  • incineration with energy recovery, see 38.22
  • incineration without energy recovery, see 38.31
• decontamination of surface water and groundwater at the place of pollution, see 39.00
• construction or repair of sewerage systems, see 42.21
• cleaning and unblocking of drainpipes in buildings, see 43.22
• rental of portable toilets, see 77.39