Why the pump fails at the worst moment
A sump pump can sit idle for months in a dry Colorado winter and then have to run every few minutes during a wet spring or a summer storm. Floats stick, check valves wear, and switches corrode while nobody is watching. Afternoon thunderstorms with lightning and wind can also cut power for hours, and a pump without electricity does nothing while groundwater keeps rising into the pit.
In Englewood, sump systems are more often found in houses that were renovated, had waterproofing added, or are newer infill than in original bungalows. If yours was installed by a previous owner, you may not know its age, its discharge route or whether it has ever been tested.
Monthly test
Check power
Confirm the pump is plugged into a working outlet, ideally a dedicated circuit, and not into an extension cord.
Fill the pit
Slowly pour a bucket of water into the pit until the float rises. The pump should start on its own.
Watch it run
The water level should drop quickly and the pump should shut off cleanly. Listen for grinding, rattling or a motor that hums without moving water.
Check the check valve
After the pump stops, water should not flow back down the discharge pipe into the pit. A repeated thump or quick refilling suggests a failing check valve.
Look outside
Find where the discharge line ends. It should be clear of snow, ice and debris and empty well away from the foundation.
Test the backup
If you have a backup pump, unplug the main pump and repeat the bucket test to make sure the backup starts.
Backup options compared
| Option | How it works | Strengths | Limits |
|---|---|---|---|
| Battery backup pump | Second pump in the pit runs from a battery when the main pump fails or loses power | Independent of utility power and of the main pump | Battery has limited run time and must be maintained or replaced periodically |
| Water-powered backup | Uses municipal water pressure to pull water from the pit | No battery to wear out | Uses household water while running; needs adequate water pressure; may need a backflow device and plumbing permit |
| Portable generator | Powers the main pump during an outage | Runs as long as fuel lasts | Someone must be home to start it; never run indoors or near windows due to carbon monoxide |
| Standby generator | Starts automatically when power fails | Covers the pump and other circuits | Larger project with electrical and gas work and permits |
| Second identical pump | Mounted higher in the pit as a spare | Covers a mechanical failure | Does nothing during a power outage |
Ask a plumber who services the pit
- How old does this pump appear to be, and what condition are the float and check valve in?
- Is the pit deep and wide enough for a backup pump to fit alongside the main one?
- Is the discharge line sized and routed correctly, and does it risk freezing in winter?
- Would an alarm that sounds when the water rises too high be useful here?
- Does this city require a permit for a water-powered backup or a new discharge line?
General information for Englewood, not a quote or professional advice. In an emergency, call 911.