Sump pumps sized for river-town groundwater
Raritan Valley Waterproofing digs new sump pits, swaps out tired pumps and adds battery backup for basements where groundwater keeps a pump busy long after the rain stops.
Why the pump keeps going after the river crests
Rain is only the start. In neighborhoods near the Raritan and the Millstone, the river can stay high for days, and the ground under the houses stays saturated with it. A pit that sits dry most of the year can then fill every few minutes. That steady load is what wears out switches and motors, and it is why pump choice here is about duty, not just horsepower.
A new pit or a new pump?
If the basement has no pit and water comes in at the floor, a new one goes at the low point, usually fed by interior drain tile. If a pit exists, the questions are whether it is deep enough, whether its liner is intact, and whether a lid keeps debris and moisture in check.
Replacing just the pump makes sense when the pit is sound and the old unit failed from age. Signs it is time: humming without moving water, short on-off bursts, a float that sticks, or rust on the housing.
Backup for the night the power goes out
Big storms knock out power, and that is exactly when the pit fills fastest. A battery backup pump sits beside the main pump and takes over when the main one loses power or cannot keep up. Its battery needs checking and eventual replacement. A second option for some homes is a water-powered backup that runs on municipal water pressure; it suits houses on public water and needs a backflow device.
Sending the water somewhere useful
The discharge line has to carry water far enough from the foundation that it does not soak back in. In winter, a line that holds water can freeze solid and leave the pump pushing against ice, so the outside run is sloped to drain and can be fitted with an overflow fitting near the house. Discharging into a sanitary sewer is generally not allowed, so the route gets planned at the visit.
Check valves, alarms and the small parts
- A check valve stops the water in the pipe from falling back into the pit each cycle.
- A high-water alarm sounds before the pit overflows, so you know while there is still time.
- A dedicated outlet keeps the pump off a shared circuit that might trip.
- A sealed lid cuts down on humidity and keeps toys and debris out of the float.
Pump work near the rivers
See every town on the service area page.