The Bangalore Water Supply and Sewerage Board (BWSSB) is committed to providing drinking water of unquestionable quality in sufficient quantity and to treat the sewage generated to the required parameters.
As the leader in providing water and sanitation services, BWSSB is recognized as an effective instrument of change through adopting state-of-the-art technologies for improving the quality of its services to the general public.
Until 1894, water was supplied in Karanjee system. Unfiltered natural water was supplied from Dharmambudhi and Sampangi tanks, supplemented by water from ponds and wells.
- 1896: 36 MLD of Water was supplied through pipes from Hesaraghatta Lake on the Arkavathi River.
- 1933: Under “Chamarajendra Water Works” a reservoir was commissioned on River Arkavathi by building a dam at Thippagondana (TG) Halli to supply 135 MLD of water.
- 1964: Bangalore Water Supply and Sewerage Board came into existence with the objective to operate and maintain the water supply, head works, distribution and sewerage system including treating the sewage before discharging into natural valleys. Treated Water was supplied from river Cauvery to Bangalore in stages.
In total, 900 MLD of water is being supplied by BWSSB
- 1974 – CWSS Stage I – 135 MLD
- 1983 –CWSS Stage II – 135 MLD
- 1993 – CWSS Stage III – 270 MLD
- 2002 – CWSS Stage IV Phase I– 270 MLD
- 2008 – CWSS Stage IV Phase I – 100 MLD augmented
- 2012 – CWSS Stage IV Phase II – Expected to draw 500 MLD more from Cauvery.