Bangalore Water Supply & Sewerage Board [Bwssb] — Sewerage water reverse flow since 2018

Address: 26, Gurukripa, Vemmanna Layout, 2nd Cross, Doddabommmasandra, Vidyaranyapura, Bangalore- 560097

Our house was constructed in the year 1991. For the first time in 2018 rainy season sewerage water came into our house because of reverse flow. We have make on line complaint a year back, followed up by letters and personal visit to local BWSSB office, but the result is zero. This week also we faced the problem.
When it rains moderately also reverse flow happens and it will recede 10 or 15 minutes after rain stops. We feel that the problem is due to the reason that most of the old and new houses in our road have allowed the terrace water to flow into the sewerage line, when it rains the pipe line is not able to take the load.
Concerned authorities kindly take necessary steps to resolve the issue which is pending for almost more than three years.