Toilet repair in San Gabriel
If your toilet hisses between flushes or takes ages to refill, lift the lid and photograph the parts inside. Message that picture to (310) 628-9399.

Reading the inside of the tank
The photo above shows a typical older tank: a fill valve on one side, a flapper over the flush valve, and brown mineral staining along the waterline. Every one of those parts can be replaced without removing the toilet.
A tank that keeps topping itself up is usually losing water past the flapper. One that fills slowly often has a fill valve clogged with grit.
Grit and scale in the fill valve
Moderately hard water, averaging 97.4 ppm in the County Water District's 2025 report, leaves deposits in the small openings of a fill valve. Sometimes a flush of the valve clears it; often replacing the valve is the lasting fix.
We also look at the supply line and the little shutoff at the wall, since both age along with the tank.
A bowl that moves
If the toilet rocks, the bolts at its base have loosened. Leaving it can tear the wax seal and let water seep under the floor.
We reset the toilet on a fresh seal and new bolts. If the flange is cracked or the floor is soft, we explain what we see before doing anything more.
Where these numbers come from
Questions from San Gabriel homeowners
Why does my toilet run at night?
Water is slipping past the flapper, and the fill valve refills the tank to replace it.
Can old toilets get new tank parts?
Usually. We measure the flush valve and tank height to match the right parts.
Related repairs
- Faucet repair in San GabrielTwo-handle and single-lever faucet drips fixed in San Gabriel.
- Under-sink leaks in San GabrielDamp cabinet floors and weeping valves under San Gabriel sinks fixed: shutoffs, supply lines, traps and strainers.
How San Gabriel's older houses are plumbed · Message us a picture