Municipal Corporation Of Faridabad — For safe drinking water

Address:

house no 232,sec 18,HBC, Faridabad, Haryana

We are staying in h.no 232, sec 18, Faridabad. Haryana.
Our supply water is some time contaminated with sewage water. When sewage pipe line is fully jam for some reason. We are getting unsafe water, very pungent smell sewage water mix with supply water to our water tank.
Request you for a permanent solution to this problem. Why supply drinking water getting mixed with sewage water through pipe line.