Sump pump not working while the basement fills
The pit fills, the float rises, the pump runs, and the water leaves through the discharge pipe. When any step breaks, the water level climbs toward the floor. A pit that is full to the rim with a silent pump is an emergency, and a pump that hums without moving water is close behind.
Call (215) 714-6692 and we will book a same-day repair when available, including overnight and weekend calls during storms. Tell us what the pump is doing: silent, humming, cycling rapidly, or running without stopping.
Quick checks before you call
Three minutes at the pit
- Is the pump plugged in, and is the GFCI outlet or breaker tripped?
- Lift the float by hand and see whether the pump starts
- Look for debris, gravel or a stuck float arm
- Check that the discharge pipe is not frozen, kinked or disconnected outside
- Listen for humming, which can mean a seized motor or clogged impeller
If the pump runs when you lift the float, the switch is the likely failure. If it hums and does not pump, the impeller or motor may be jammed. If it runs but water drops slowly, the check valve or discharge line may be clogged.
Why sump pumps fail
Stuck or tangled float
The float switch rides on a tether or arm. If it jams against the pit wall, the pump never gets the signal.
Burned-out motor
A pump that runs constantly for years, or runs dry, overheats. Older units eventually fail.
Clogged inlet or impeller
Gravel, silt and debris can jam the impeller and stall the motor.
Failed check valve
A stuck or missing check valve lets the water in the discharge pipe fall back into the pit, so the pump cycles again and again.
Power loss in a storm
Storms bring outages just when the pit needs to run. Without backup power, the pump is off.
Frozen or blocked discharge
If the outside outlet is blocked by ice, leaves or a collapsed line, water has nowhere to go.
Pit rising and the pump is silent?
Call (215) 714-6692 now. We schedule same-day sump pump repair when available, including storm nights.
Battery backup and storm season
A battery backup pump sits beside the primary and runs on a 12-volt battery when the power fails or the main pump dies. It is the only protection if a storm knocks out electricity.
The National Weather Service called the remnants of Ida on September 1, 2021 catastrophic flash flooding in the Philadelphia area, with Pennypack Creek crossings in Willow Grove under water. Test your backup before the next big forecast, because backup run time depends on the battery, the pump and how fast water enters the pit.
Water-powered backups use water pressure to drain the pit and need no battery, but they depend on supply pressure and use more water. We explain the trade-offs between battery and water-powered backups for your house. Test any backup quarterly by pouring water into the pit and confirming both pumps start.
Repair or replace the pump
Repair is reasonable if
- The failure is a switch, check valve or discharge connection
- The pump is fairly new
- The motor runs smoothly
- The pit is the right size for the flow
Replace is smarter if
- The motor is burned out or seized
- The pump is old and cycles often
- Parts are hard to find
- You want a backup or a stronger unit
Most residential pumps are submersible units that sit in the pit, while pedestal pumps sit on a column above the pit. Pedestal units are easier to reach but louder and more exposed. We replace either style and can size the unit to your pit and discharge height.
Where the water goes after the pump
The discharge line should carry water outside and away from the foundation, not back toward it. A line that dumps near the wall can send the same water back to the pit. The Horsham Water and Sewer Authority bans sump pump, storm, ground and roof water from the sanitary sewer, so never tie the line to a floor drain or sewer cleanout. The township also bars discharge onto a neighbor without written permission.
We install the pump, check valve and piping so the water exits onto your own lot, as the Authority advises. If frequent pumping suggests groundwater or a failing drain, see basement waterproofing, where we cover the plumbing-side options.
Before we arrive: protect the basement
A few moves limit the damage.
Keep electricity away from water
Do not stand in water near outlets or panels. Unplug devices on the floor only if you can do so while dry.
Lift belongings
Raise boxes, furniture and electronics onto shelves or blocks.
Bail the pit
Use a bucket or wet-dry vacuum to lower the level if safe, which buys time.
Clear the discharge outlet
Check the outside pipe end for ice, leaves or a blocked screen.
What affects the price of sump pump repair
Your price is clear before work starts. These factors drive it.
Repair or full replacement
A switch or check valve is a small job, a new pump with piping is larger.
Pump type and horsepower
Capacity must match pit inflow, and bigger motors cost more.
Backup system
Adding a battery or water-powered backup adds equipment and setup.
Pit and discharge condition
A cracked pit, old pipe or a missing check valve changes the scope.
Time of the call
Storm-night and weekend dispatch is part of emergency service, and we explain it up front.
The Authority says basic homeowner policies often exclude sewer and sump backup, so coverage is usually a separate endorsement and often excludes groundwater seepage. Ask your agent before you file. Want your real number? Call (215) 714-6692.
Related problems
If water in the basement comes from a leaking pipe rather than groundwater, see leak detection. If sewage backs up through the floor drain, that is a drain problem rather than a sump issue. We serve homes near Warrington and Hatboro as well as across Horsham.
Questions about sump pump repair in Horsham
Yes. Dispatch runs 24/7, including storm nights. Call (215) 714-6692, unplug floor-level items and bail the pit while we book the soonest available same-day or after-hours visit.
Common causes are a stuck float, a failed check valve, high groundwater, or a pump too small for the inflow. A constant run can also mean a clog in the discharge line.
It depends on the battery, the pump and the inflow rate. In heavy inflow it can be hours. Ask us for the numbers for your setup.
If your basement has flooded before or you store valuables below grade, a backup is a smart addition. It covers power loss and a primary pump failure.
Away from the foundation and onto your own property. The Horsham Water and Sewer Authority does not allow sump pump water in the sanitary sewer, and the township requires written permission from a neighbor before discharge reaches their lot. Ask Code Enforcement at (215) 643-3131 if your layout is tight.
Quarterly, and before heavy-rain seasons. Pour water in the pit and confirm the pump turns on, drains it, and shuts off.
Yes, pits and pumps are part of our plumbing work. Exterior excavation and regrading are handled by excavation contractors, and we can coordinate with them.
Sources we checked
Local facts on this page come from these public pages. Plumbing work in Pennsylvania falls under the Uniform Construction Code, which adopts the International Plumbing Code (IPC) provisions, so ask Horsham Code Enforcement which edition applies before a permit is pulled. Rules and phone numbers change, so confirm with the office before you act.
- horshamwater-sewer.com/sites/default/files/2026-02/horsham-water-se... Authority report
- horshamwater-sewer.com/did-you-know Authority report
- horsham.org/10737/Permits Township page
- horshamwater-sewer.com/sewer-backups Authority report
- weather.gov/phi/eventreview20210901 State agency