In a Highland plumbing emergency, shut off the main valve, and for a gas smell, leave and call 911 and SoCalGas at 1-800-427-2200. East Valley Water District runs the water and sewer mains that serve most of the city. For leaks, backups and failed water heaters on your property, call the number on this page to be connected with a local plumber in Highland.

What to know about Highland
Highland sits at the southern base of the San Bernardino Mountains and is divided into Highland, East Highland and West Highland. Homes near the foothills sit a bit higher than the valley floor, and frost on exposed pipes is more likely there on the coldest nights. The housing mix spans decades: the median home was built in 1983, about 44 percent were built before 1980, and the 1980s and 1990s were the biggest building periods. That puts many water heaters, supply lines and drain lines at an age where sudden failures are common.
The City names East Valley Water District (EVWD) as its water agency, and new structures must connect to sewer where it is available, subject to EVWD review. Whether every Highland address is in EVWD's area was not confirmed, so check your bill. If the problem is in the street, call your water agency; if it is in your yard, walls or drains, it is a plumbing job.
Common emergencies and the usual fix
| Emergency | Typical response |
|---|---|
| Burst supply pipe | Close the main, cut out the damaged section and replace it |
| Leaking water heater tank | Shut it down and drain it, then plan a replacement |
| Main drain backup | Clear the line from a cleanout, then camera it if it recurs |
| Frozen and split hose bib | Isolate it and replace the fixture or section |
| Hidden leak | Check the meter, then trace the leak |
Signs it cannot wait
- Water pouring from a ceiling, wall or under a sink
- Sewage in a tub, shower or the lowest toilet
- No hot water plus a wet floor around the heater
- Pipes cracked after a cold night near the foothills
- A gas smell (get out, then call 911 and SoCalGas)
Timing and seasons
Hot summers are hard on water heaters and irrigation, and Santa Ana wind events can bring power outages that affect tankless heaters. Winter is when a cold snap splits exposed lines. The City of Highland Building & Safety Division requires permits for plumbing systems and water heaters, so a replacement may follow a temporary repair. After-hours calls typically cost more; ask first. Arrival depends on the hour and the plumber's schedule, so no time is promised.
Emergency Plumber questions in Highland
A pipe split during a cold night. What now?
Does an emergency repair still need a permit here?
Are older homes here more prone to plumbing emergencies?
The whole house lost water. Is it my plumbing or the utility?
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