Plumbers in Corona, CA

The Circle City, southwest of Riverside

Corona is about 11 miles southwest of Riverside in a straight line, on the western edge of Riverside County where I-15, SR-91 and SR-71 meet. It counted 157,136 residents in 2020. Grand Boulevard forms a full circle around the historic core, which earned the Circle City nickname, and the town was once called the Lemon Capital of the World. Downtown and the South Main Street Palms District hold the older homes, while Corona Hills, Sierra Del Oro and Eagle Glen are later neighborhoods. A large industrial area spreads across the north side near Corona Municipal Airport.

A blended, hard water supply

The City of Corona Utilities Department mixes three supplies: groundwater from City wells, much of it treated by reverse osmosis at the Temescal Desalter; Colorado River water from Lake Mathews treated at the City's Sierra Del Oro and Lester plants; and some State Water Project water. Disinfection uses chloramines. The utility's report calls the water hard, with an average of 146 mg/L (8.5 grains per gallon) and a very wide range of 7.2 to 290 mg/L depending on the source. Scale on fixtures and inside water heaters is common, and softeners are a frequent request.

The City says pressure regulators are the customer's to replace when needed. A failing regulator can show up as banging pipes, dripping relief valves or a running toilet.

Service lines and sewer

Corona's service line inventory found no lead lines and no galvanized lines needing replacement. The utility asks customers to contact it before altering or replacing a service line. Sewer is also run by the Utilities Department for its water customers, and wastewater is treated at City water reclamation facilities. For water problems on the city side, call (951) 736-2234 (after hours, press 1 for the standby crew); Customer Care is (951) 736-2321.

Backflow testing

Backflow assembly test reports go to the Utilities Department's backflow desk on the City's Backflow Test Form. Double check and reduced pressure detector assemblies must include the single check bypass result or the report is rejected. The City also keeps an approved device list for service isolation. Contact (951) 739-4942 or BackflowDesk@CoronaCA.gov.

Permits and gas

The Building Division, 400 S. Vicentia Avenue, Suite 120, (951) 736-2250, handles plan review, permits and inspections; it is open Monday through Thursday and closed Fridays. Applications and inspection requests go through eTRAKiT online. SoCalGas serves Corona. If you smell gas, leave the house first, then call 911 and SoCalGas at 1-800-427-2200 from outside.

Corona compared with Riverside

Riverside Public Utilities chlorinates its water, while Corona uses chloramines, which can wear rubber flapper and washer parts differently, and Corona's hardness swings more by source. When you call the number on this page, tell us what you are seeing, and you will be connected with an independent plumber who serves Corona. Pricing and arrival are worked out with that plumber.