If your toilet won’t stop running, a simple fix usually involves the flapper, chain, or fill valve. If jiggling the handle helps, water trickles from the tank into the bowl, or the chain is obviously too tight or too loose, it’s likely a quick part adjustment or swap. Signs of a hidden leak include water at the toilet base, musty odors, soft flooring, stains on the ceiling below, or the tank refilling randomly with no one using water. Those point past a worn flapper and into toilet leak detection. Call us to sort it out before water damage spreads.
Start with the easy checks. Look in the tank: is the flapper warped or not sealing? Is the chain catching under it or too short to let it seat? Make sure the refill tube aims into the overflow and the float isn’t set so high that water spills into that tube. A dye test is simple: put a few drops of food coloring in the tank and wait 10–15 minutes; color in the bowl means the flapper is leaking and needs replacement.
Running with no visible bowl trickle can still be a problem. Dampness at the shutoff valve or supply line, a hissing sound from the wall, water seeping around the toilet base, or grout that stays dark point to a supply or wax ring issue. A sudden jump in the water bill or a spinning water meter when fixtures are off can indicate an underground or slab leak near the bathroom. Those are not DIY; they call for leak detection.
Our Scottsdale team tracks down hidden moisture without tearing up the room first. We use targeted tests at the toilet, moisture meters along walls and floors, thermal imaging to spot cold supply lines behind tile, and acoustic listening to trace pressurized pipe leaks. If readings suggest water under the floor, we move into slab leak detection or underground water leak detection to confirm the source.
Once we find it, we match the repair to the problem. We handle toilet leak repair (flappers, fill valves, seals, and wax rings), pipe leak repair, water line leak repair, bathroom leak repair, and slab leak repair or underground leak repair when the leak is beneath the floor. If the issue involves the sewer side, we provide sewer leak detection and sewer line leak repair.
A running toilet wastes water fast; a hidden leak can also rot subflooring and stain the ceiling below. If you see dampness at the base, smell mildew, or the toilet rocks when you sit, don’t wait. Small leaks do not stay small once water gets into wood and drywall.
When you call, we’ll give you an arrival window and start with a focused inspection. If we need to test beyond the toilet, we explain why and what we’re looking for. The estimate is written down before work starts so you know the plan and the price.
Scottsdale Leak Detection Pros handles toilet leak detection for homes and businesses across Scottsdale, Arizona. If your toilet won’t stop running and you’re not sure why, call us. We’ll tell you what’s simple and what needs a deeper look, then get it fixed.