I am in the process of getting a permit to get rid of my septic tank and tie onto the city sewer. A friend told me I should install a back flow preventer in the line and also said to use an extendable backwater valve because its easy if you have to do any maintence. Please give me some input
Also the pipe coming out of the house is 4". Should it stay 4 inch all the way to the Main (50 feet away ) or should it be ran in 3 inch.
Also the pipe coming out of the house is 4". Should it stay 4 inch all the way to the Main (50 feet away ) or should it be ran in 3 inch.