Back flow preventer for house

TurboDoe

My friend asked me how much it would cost to have one installed for a house. I heard there is a church on oak street and Milani plumbing was hired to do the work. Total for that job was around $10000 to replace some old pipes, put in a back flow preventer, a sump pump, and repave any concrete walkway.

TurboDoe

Thx Quest for the videos! They are very helpful. Some households have their sewer back flow preventer installed some where under the lawn and in front of their homes. sometimes I notice there would be round greyish concrete covers on the lawn. So plumbers installed the preventer in that right?

TurboDoe

Thx Quest for all the useful info.