A water-powered backup sump pump uses the pressure of your home’s municipal water supply, instead of electricity, to remove water from the sump pit. It is designed to keep working during a power outage, when a regular electric pump would stop.
Using Water Pressure Instead of Power
The backup pump connects to a water supply line and to its own discharge pipe. When the water in the pit rises past a set level, a float opens a valve. Water from the supply line rushes through the pump, creating suction that pulls water out of the pit and sends both out through the discharge.
Possible Advantages
- No batteries to charge or replace
- Can run as long as water pressure is available
- Few moving parts to wear out
- Turns on only when the main pump cannot keep up
Limits to Consider
These pumps need good, steady municipal water pressure, so they are not suitable for homes on wells. They use water to move water, which adds to your water use while they run. Many models move less water than a main electric pump, so they are a backup, not a replacement. Local plumbing codes usually require a backflow preventer to protect drinking water.
Comparing Backup Options
Battery backup pumps are another common choice. They do not use city water but need battery care. The right option depends on your water pressure, how much water your pit collects, and local rules. Some homes use both a backup pump and a high-water alarm.
Test any backup system along with the main pump a few times a year, and after any work on your water supply.
If your main pump is struggling, getting it repaired before adding a backup is a smart first step. To find out whether your water pressure supports this type of pump, you can have a plumber check your setup at (833) 603-1840.