Pits fail in predictable ways
Sump pumps tend to fail at the worst moment: during the same storm that fills the pit. The reasons are usually mundane. A tripped breaker, an unplugged cord, a float stuck against the side of the pit, a clogged intake or a frozen or blocked discharge pipe can each leave the pump silent while water climbs. In a motor failure the unit may hum without moving water.
In Wheat Ridge, many sump pits sit in older ranch basements with a discharge pipe that runs to the yard. After heavy rain on saturated ground, the pit may fill faster than the pump can lift, even when everything works.
A quick sequence
Only do these from a dry position and never reach into a pit with the pump plugged in.
- Check the outlet and breaker.Confirm the cord is plugged in and the breaker is on. Ground fault devices often trip in storms.
- Lift the float.If the pump has a float switch, look to see whether it moves freely. A float resting against the pit wall will not trigger the motor.
- Watch the discharge.Go outside and look at where the pipe empties. Ice, leaves, soil or a kinked section can block it.
- Set a backup.A small utility pump in the pit, or a hose into a laundry sink, may buy time until a replacement is installed.
- Move valuables up.Lift boxes and electronics onto shelves while the water is still low.
While you wait on repairs
- Keep cords and power strips off the wet floor.
- Move stored items to shelves.
- Note how fast the pit refills over a few minutes.
- Keep a bucket and a small pump nearby.
Symptoms and likely causes
- What you see
- Silent pit, water rising
- Likely cause
- No power or stuck float
- First check
- Breaker, plug, float movement
- What you see
- Motor humming, no flow
- Likely cause
- Clogged intake or failed impeller
- First check
- Disconnect power, then inspect
- What you see
- Flow but pit keeps filling
- Likely cause
- Pump undersized for the storm
- First check
- Add a second pump or hose out
- What you see
- Water gurgling back down pipe
- Likely cause
- Missing or failed check valve
- First check
- Look at the pipe above the pump
- What you see
- Frozen outdoor outlet
- Likely cause
- Ice in the discharge
- First check
- Clear carefully and redirect
Planning for the next storm
After the immediate problem passes, think about redundancy. A battery backup, a second pump set a bit higher in the pit and a visual or audible alarm all reduce the chance of another surprise. Test the pump a few times a year by pouring water into the pit until the float lifts, and check that the discharge is still clear.
Check also where the discharge ends. If it empties near the house, water can loop back through the soil into the pit. Extending it farther downhill, and away from a neighbor's wall, usually helps.
Common questions
Should I stand in water to fix the pump?
No. Disconnect power from a dry location first, and keep your feet dry. If you cannot, leave the repair to someone with the right protective gear.
Does homeowners insurance cover sump pump failure?
Coverage varies widely and often requires a specific endorsement. Check your policy language and ask your insurer before assuming.
General information for Wheat Ridge, not a quote or professional advice. In an emergency, call 911.