Bacteria who need oxygen to live

Bacteria who live without oxygen

By product of waste water treatment

Bacteria containing tank for sewage decomposition

Decomposition of human excreta by earthworm

Cleaning of waste water

Water disinfactant

Distance between two nearest manholes is

Bar screens remove

Harmful substances dissolved and suspended as impurities are called

Aerobic bacteria

Anaerobic bacteria

Sludge and biogas

Septic tank

Vermicompost

Sewage treatment

Ozone

50 mt to 60 mt

Large objects from waste water

Contaminants