Connecting Water Softener Discharge Into Sewer Line

This is just such an unconventional approach.

Connecting water softener discharge into sewer line.

For this purpose you will need same set up like for washing machine. An addition ft for every 10psi past 40. There are actually three ways the sewage can get back into the drinking water lines. The sub atmospheric pressure within the city pipes would cause the sewage to be sucked into the water softener.

That means p trap and stand pipe. I would like to instead drain it into the sanitary sewer. However its in basement and has to travel upward of 6 8 ft. A softener drain line must not be connected directly to the waste system but must be emptied into a laundry tray floor drain or properly trapped special outlet preserving an air gap of at least two times the diameter of the drain line but in no case less than 1 1 2 above the top of the receptacle used.

The shortest easiest way is to tie it into the underground sewer line. From there they can drain naturally to some sewer access point in the house. To hit the 1 5 pvc. 1 a siphon may be created by a city water pipe break or high water usage.

Air gap and check valves are both good idea since it is an extra precaution that sewer won t enter your softener. So i am good for 8 ft. The manual says the drain can be extended upwards of 6 ft. Softener backwash discharge is under pressure and can be routed vertically some distance.

This is to prevent non potable water from flowing backwards possibly mixing and contaminating potable drinking water. You cannot run water softener discharge line directly into sewer.