Sump Pump Installation
in Walnut Grove, BC

Walnut Grove is one of the Township of Langley's largest and most established residential communities, developed primarily in the late 1980s and 1990s. The neighbourhood sits on the flat benchland between the Fort Langley bluffs and the Nicomekl River, with clay-loam soils that drain slowly. The housing here is predominantly single-family, with crawlspace foundations that are now 25 to 40 years old — old enough that original vapour control and insulation have degraded significantly in many cases.

Surrey receives roughly 1,500 millimetres of precipitation annually, with the bulk of it arriving between October and March. For homes with crawlspaces, especially those in lower-lying areas of Newton, Bridgeview, or along the Serpentine and Nicomekl river floodplains, that volume of rainfall can overwhelm perimeter drainage and allow water to accumulate beneath the floor. A properly sized and installed sump pump is the most reliable mechanical defense against crawlspace flooding.

The choice of pump matters significantly. Sump pumps are rated by horsepower and gallons-per-hour capacity, and the right specification depends on the size of the drainage catchment area and how quickly water accumulates during peak events. Undersized pumps run continuously during heavy rain events, wear out faster, and may not keep pace with inflow. We size pumps to handle well above the expected worst-case scenario for a given home's drainage conditions.