What To Do When Your Water Heater Leaks: 6 Steps
By Water Heater Leak Repair Solutions · Updated September 30, 2026 · DeSoto, TX
Water is spreading across the floor and your heart is pounding. Take a breath — a leaking water heater is manageable if you work the steps in order. Here's exactly what our dispatchers tell DeSoto callers to do while the truck rolls.
Step 1: Stop the water
Find the cold-water shutoff valve on the pipe entering the top of the heater and turn it clockwise until it stops. No valve, or it won't budge? Shut off the home's main water valve instead. This single action stops most leaks from getting worse.
Step 2: Kill the heat source
Electric: switch off the breaker labeled for the water heater — heating an emptying tank burns out elements fast. Gas: turn the gas control knob to PILOT or OFF. If you smell gas at any point, skip everything, leave the house, and call your gas utility from outside.
Step 3: Contain the spread
Towels, mops, buckets under the drip. Move boxes, electronics, and anything absorbent away from the water's path. If the heater is in the attic and water is coming through the ceiling, place a bucket and poke a small relief hole in the sagging drywall to control the drip point.
Step 4: Document the scene
Take phone photos of the leak source, the water spread, and the unit's data plate (model and serial). This helps our technician and, if damage is significant, your insurance claim.
Step 5: The storm-season extras
If the leak followed a storm: check whether the breaker tripped (surge), note any flickering power, and don't touch standing water near electrical components. If floodwater reached a gas unit, do not attempt to relight anything — wet gas controls must be replaced.
Step 6: Call a leak specialist
Call (833) 713-2101. Tell us: where the water is coming from, whether you shut off water and power/gas, and whether there's a gas smell. We'll triage the severity and give you a real arrival window.
What NOT to do
Don't cap or plug the TPR discharge pipe. Don't keep resetting a tripped breaker. Don't apply sealants or epoxies to a leaking tank — they fail under pressure and waste the money a proper repair would cost. And don't assume a small drip can wait until after storm season; small drips become burst tanks.
Common Questions
Should I drain the tank myself?
Only if a technician advises it by phone. Draining a still-hot tank improperly can scald, and draining with the power on destroys electric elements.
How long can I go without hot water?
Most of our DeSoto leak calls are resolved same-day — repaired or replaced — so the cold-shower era is usually brief.
Water spreading right now? Call our emergency line immediately.
Talk to a real dispatcher — upfront pricing, fast arrival.
Call (833) 713-2101Keep Reading
Water heater leak detection · DeSoto water heater leak repair home