Bangalore Water Supply & Sewerage Board [Bwssb] — Sewer blockage problem

Address: No 18 and 19 sneha nagar 2 nd corss behind reliance fresh amruthahalli Bangalore 560092

My house is at the cornor of the road and there is always a problem of sewage blockage where the water goes out from house but in the main line it doesn't move it stops and hits back .