37000 | Cesspools emptying and cleaning |
37000 | Chemical toilets servicing |
37000 | Drains maintenance |
37000 | Human waste water collection and transport by sewers, collectors, tanks and other means of transport |
37000 | Local authority drainage services |
37000 | Local authority sewage services |
37000 | Rain water collection and transportation by sewers, collectors, tanks and other means of transport |
37000 | Septic tanks emptying and cleaning |
37000 | Sewage farm |
37000 | Sewage works |
37000 | Sewerage system maintenance and operation |
37000 | Treatment of human waste water by means of physical, chemical and biological processes |
37000 | Treatment of waste water (human, industrial, from swimming pools etc.) by various processes. |
37000 | |