Sump Pump Failure in Lancaster County — What To Do and How to Prevent It

Sump Pump Failure Is the Leading Cause of Basement Flooding in Lancaster County

Lancaster County's suburban residential stock — particularly the developments built from the 1970s through the 1990s in Manheim Township, East Hempfield, West Lampeter, and similar communities — was built with finished basements that rely almost entirely on sump pump systems for groundwater management. When those pumps fail during heavy precipitation, the results are fast and expensive.

Why Sump Pumps Fail

Power Outages

The most common cause of sump pump failure is also the simplest: the power goes out during the same storm that's producing the water. Without electricity, a standard sump pump stops working exactly when it's needed most. This is the primary reason battery backup sump systems exist and why they are worth the investment for any Lancaster County homeowner with a finished basement.

Float Switch Failure

The float switch tells the pump when water has risen enough to activate. These switches can stick, jam, or fail mechanically — leaving the pump either running constantly (burning out the motor) or not running at all (allowing water to rise unchecked). Annual inspection and testing of the float switch is the single most important maintenance step for sump-dependent Lancaster County homes.

Overwhelmed Capacity

Some sump pumps are simply undersized for the volume of water a significant Lancaster County storm event produces. A pump rated for modest groundwater infiltration may not keep pace during the kind of heavy sustained rain that produces the most damage. If your basement flooded during a storm that your neighbors' didn't, capacity may be the issue.

Age and Wear

Most residential sump pumps have a functional lifespan of 7 to 10 years. Many Lancaster County homeowners don't know when their pump was installed and have never tested it. If you've lived in your home for more than a decade without thinking about your sump pump, test it today by pouring water into the pit and confirming it activates and drains.

Prevention — What to Do Now

• Install a battery backup sump system — the most important single investment for finished basement protection
• Test your primary pump before each storm season by filling the pit manually
• Inspect and clean the pit annually — debris can jam the float switch
• Consider a water-powered backup pump as a secondary failsafe
• Check the discharge line outside to confirm it's clear and draining away from the foundation

If Your Sump Fails and the Basement Floods

Cut power to the basement before entering if there is standing water. Document everything before touching anything. Call (717) 369-8058 — Lancaster County contractors can be on-site within 60 minutes with commercial extraction equipment. A professional response within the first few hours is the difference between a $4,000 extraction job and a $15,000 mold remediation.