
The solution to correcting a wet basement depends on the cause for the water or moisture:
If condensation is the problem, this can be corrected by insulating the cold surfaces (pipes and walls). This will stop humidity in the air from forming water droplets on the cold surfaces. A dehumidifier will also remove excessive moisture from the air and help to reduce or eliminate the problem.
A leaking pipe can usually be found by following the water "uphill" to the source. Be especially watchful where a pipe above may be dripping slowly onto a pipe below. Keep following the trail up to the source.
An easy first step to minimize (bur rarely eliminate) water penetration of the basement walls is to ensure all water from the roof entering down spouts and drains is carried away from the foundation. Drains should empty a minimum of three feet from the foundation but farther is better.