A hidden leak in Colton usually shows up on your City water bill, as a meter that keeps turning, or as a damp or warm spot inside. A plumber can locate the leak by testing the plumbing in sections, so the repair stays small. Call the number on this page to be connected with a local plumber in Colton.
Colton at a glance
The City of Colton runs its own water utility, supplied mostly by groundwater from city wells and disinfected with chlorine. City crews respond to main breaks and service line leaks; if water is surfacing at the meter or the street, call Customer Service at (909) 370-5555, or the after-hours line at (909) 370-5000. Colton's housing leans older: Point2Homes puts the median year built at 1979, with about half of homes built before 1980. Older pipe and valves, slab foundations and hard water make hidden leaks a common call here.
What to do now
- Turn off all faucets, appliances and the irrigation controller.
- Note the meter reading and check again after 30 to 60 minutes of no use.
- If the number changed, close the main shutoff at the house and look once more to separate inside from outside.
- Check toilets with a few drops of food coloring in each tank.
- Feel tile floors for warm areas and look under sinks and around the water heater.
- If water is actively spraying or a ceiling is wet, shut off the main and call right away.
Symptoms and likely causes
| Symptom | Likely cause |
|---|---|
| White crust on valves or supply lines | Slow drip leaving minerals behind |
| Warm floor area | Hot water line leaking under the slab |
| Bowl water shows dye from the tank | Worn flapper |
| Soggy yard between meter and house | Service line leak on the private side |
| Drop in pressure across the house | Significant supply leak or a failing valve |
| Hissing behind drywall | Pinhole in pressurized pipe |
Cost factors
Colton's 2025 Consumer Confidence Report lists hardness for its Colton/Rialto sources averaging about 207 mg/L, and that scale can wear out faucet cartridges, fill valves and shower valves until they drip, which are some of the simplest leaks to fix. Beyond fixtures, cost depends on how many sections need testing, whether the pipe is in a wall, under a slab or in the yard, the detection tools used, and the repair. The City of Colton Building & Safety Division requires a permit to replace water lines, so a new service line or a reroute will typically involve one.
Leak Detection questions in Colton
Water is pooling at the meter box or the curb. Who should I call?
Is a permit needed to fix the leak once it is found?
Are older homes here more likely to have hidden leaks?
Does hard water have anything to do with leaks?
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