In the low-lying blocks close to the East River — Two Bridges, the FDR-adjacent edges of the Lower East Side, parts of the Financial District — basement and ground-floor flooding is a recurring reality, not a freak event. A working sump pump is the difference between a damp floor and a ruined one. The problem is that most people never know their pump has failed until the water is already in.
Signs your sump pump needs attention
- The pit fills but the pump doesn't start — a failed float switch, the most common single point of failure.
- The pump runs but the water level doesn't drop — a worn impeller, a blocked discharge line, or a failed check valve letting water flow back into the pit.
- Constant running — a check valve that no longer seals, so the pump cycles against water that returns every time it stops.
- Strange noises or vibration — bearing wear in the motor, often the precursor to total failure.
- The pump is more than seven years old and has never been serviced — sump pumps live in hard conditions and fail predictably with age.
Repair
Many sump pump failures are repairable without replacing the whole unit: a float switch, a check valve, a clogged intake screen, or a discharge line that's frozen or blocked at its exit. We diagnose before quoting a replacement, because a stuck float on an otherwise good pump is a $20 part, not a $300 pump. When the motor or impeller is genuinely worn out, replacement is the honest call — and a pump that's nearing end of life is worth replacing before the next storm rather than during it.
Installation
A sump pump installation done right is more than dropping a pump in a hole. The pit needs to be deep enough and positioned at the low point where water actually collects. The discharge line needs a route that carries water well away from the foundation and stays clear in winter — a discharge that freezes solid turns a working pump into a useless one. The check valve stops backflow, and the float has to be clear of the pit walls and any debris. For spaces where flooding causes real damage, we recommend a battery-backup pump that runs when the power goes out — which is, of course, exactly when storms tend to hit.
If your low-level space takes on water only during heavy storms and the cause is a backed-up drain rather than seepage, that may be sewer cleaning or a backwater valve conversation rather than a pump. Active flooding you can't keep ahead of is an emergency — call first. And if seepage is coming through a cracked foundation rather than collecting in a pit, the source work overlaps with leak repair.