Water collects near the base of a wall when a pipe inside the wall is leaking, a nearby shower or tub has a failed seal, an appliance hose is dripping, condensation is running down, or groundwater is seeping in from outside. Water tends to run downward inside walls, so it often shows up along the floor even when the source is higher up.
Leaking Pipes Inside the Wall
Supply lines and drains run through walls near kitchens, bathrooms, and laundry areas. A small leak can run down the inside of the wall and pool at the bottom. If the water appears even when no one is using water, a supply line is the more likely cause.
Bathroom Seals
Worn grout, cracked caulk, or a loose shower drain can let water slip behind the tub or shower each time it is used. That water often appears along the base of the wall on the other side, or on the floor next to the tub.
Appliances
Washing machines, dishwashers, refrigerators with ice makers, and water heaters all have water connections. A cracked hose or loose fitting behind the appliance can leak onto the floor along the wall.
Outside Water and Condensation
On lower floors, water may enter through the foundation after heavy rain. Gutters and downspouts that drain toward the house can make this worse. Cold pipes and walls in humid weather can also drip condensation that collects at the bottom.
To narrow it down, notice whether the water shows up after rain, after using a fixture, or all the time. If it seems to come from plumbing, close the valve that feeds that area.
A plumber can follow the water to its starting point and repair the leak. If you suspect outside water, a plumber can help rule plumbing in or out first. Call JPR Plumbing at (833) 603-1840.