Bangalore Water Supply & Sewerage Board [Bwssb] — Cauvery water contaminated with sewage water being received during supply

Address: 2239,2 cross,4 B Main,BDA layout, Bangalore 560017.

I am a resident of BDA layout situated in Murugeshpalaya, opp kemp fort Mall.
2239, 2 cross, 4 B main, BDA layout.Blore 560017.
I have observed that my Cauvery water is contaminated with sewage and is black in colour and stinking. Request you to kindly identify the source of contamination and resolve the issue.