A water heater usually leaks from loose or corroded pipe fittings, a temperature and pressure relief valve that is releasing water, a drain valve that is worn, condensation, or a tank that has rusted through. Leaks from fittings and valves can often be repaired. A leaking tank usually means the heater needs to be replaced.
Find Where the Water Starts
Dry the area with a towel, then watch where new water appears first. Do not touch hot pipes or parts. Water that starts at the top and runs down the side often comes from a fitting. A puddle under the center of the tank, with dry pipes above, points to the tank itself.
Fittings and Valves
The pipes at the top of the tank can loosen or corrode. The relief valve, usually on the side or top, has a pipe running down toward the floor. If water comes from that pipe, the valve is opening, which may mean the tank is too hot, the pressure is too high, or the valve is worn. Never plug or cap it. The drain valve near the bottom can also drip if it is loose or old.
Condensation or a Real Leak
Condensation can leave a little moisture on cold days, and it usually dries on its own. A puddle that keeps growing is a real leak.
What to Do Before Help Arrives
Shut the cold-water valve on the inlet pipe so the tank stops refilling. Then cut the heat source: set a gas model to its pilot or off position, or flip the breaker for an electric unit. Water from the tank can be scalding, so keep kids and pets clear of it. A gas odor changes the plan entirely: get everyone outside and call the utility or 911.
Once the water is shut off, a plumber can figure out where it is leaking and what to do next. A leak is also a good time to ask about replacement options for an older heater. Call JPR Plumbing at (833) 603-1840.