If a pipe bursts or a drain backs up in a Coronado home, close the main water valve right away; if you smell gas, leave the house and call 911 and SDG&E at 1-800-611-7343 from outside. Then call the number on this page to be connected with a local plumber in Coronado.

Coronado's setup in brief
Water in Coronado comes from California American Water under a contract with the City; Cal Am buys treated water from the City of San Diego and chloraminates it. The City of Coronado runs the sewer, and it puts the owner in charge of the sewer lateral all the way up to and including the connection to the city main. SDG&E supplies gas. With the bay on one side and the ocean on the other, salt air is hard on outdoor valves, hose bibs and exposed fittings.
Steps to take now
- Close the house shutoff, usually where the supply line enters the home, then open a low faucet to release pressure.
- If the water heater is the problem, turn off its gas valve or breaker and close the cold water valve above it.
- If drains are backing up, stop all water use, including the dishwasher and washer.
- If you smell gas, get everyone outside first, then call 911 and SDG&E at 1-800-611-7343 from a safe distance.
- If water is rising from the meter box or the street, call California American Water at 1-888-237-1333, which Cal Am says takes emergency calls at any hour.
- Photograph the damage for your insurance company, then call a plumber.
What you see and what it usually means
| What you notice | Usual cause |
|---|---|
| Water spreading from under a sink or vanity | A failed supply line, shutoff valve or fitting |
| Puddle at the base of the water heater | A tank failure, loose connection or relief valve discharge |
| Sewage in the tub or a floor drain | A blockage or break in the lateral you own |
| Corroded, dripping outdoor valve or hose bib | Salt air wear on exposed brass and fittings |
| Low pressure everywhere with water running somewhere | A hidden leak in a wall, slab or yard line |
What drives the bill
- When it happens. After-hours, weekend and holiday work generally costs more than a weekday appointment.
- Access. A leak in a finished wall, under a slab or in a tight crawl space takes longer to reach.
- Lateral repairs. Because the owner's responsibility runs to the city main connection, a broken lateral can mean work out toward the street.
- Permits. Coronado's Building Services Division offers over-the-counter emailed permits for same-location water heater and tankless change-outs, gas line repairs and interior repipes, which keeps urgent replacements moving.
Emergency Plumber questions in Coronado
How can I tell whether a sewer backup is the public main or my own lateral?
If the water heater has to be replaced tonight, is a permit involved?
Water is gushing from the street or the meter box. Who do I call?
There's a gas smell near the water heater or range. What's the first move?
More plumbing services in Coronado
Emergency Plumber nearby
Helpful guides
Sources
- California American Water: Coronado system water quality report
- California American Water: cross-connection and backflow prevention (customer service line)
- City of Coronado: about Coronado (water service contract)
- City of Coronado: homeowner sewer lateral responsibility
- City of Coronado: Building Services
- SDG&E: gas safety
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