24-Hour Emergency Plumbing in Corona

Local plumbing notes: Corona

Corona began in 1886 as South Riverside, and on July 13, 1896 its residents voted to incorporate and renamed the town Corona, Spanish for crown. The crown is Grand Boulevard, a perfectly round three-mile loop around downtown that gave the city its nickname, the Circle City, and carried road races in 1913, 1914 and 1916; the Grand Boulevard Historic District joined the National Register in 2011. In the lemon era the town was known as the Lemon Capital of the World. Today the 91 and Interstate 15 cross in the middle of the city, Prado Dam (1941) stands above the interchange of the 71 and the 91, and the Santa Ana River runs along the north side. Norco lies to the north, Riverside to the north and east, Eastvale across the river, Chino Hills, across the San Bernardino County line, to the northwest, the Santa Ana Mountains and Cleveland National Forest to the southwest, and unincorporated Temescal Valley to the south, with the county pockets of Coronita, El Cerrito and Home Gardens along the edges.

Census figures (ACS 2024 5-year estimates) put Corona at about 50,800 housing units. The median home dates from 1991, 25 percent were built before 1980, and 66 percent are single-family detached houses. By decade the stock splits almost evenly: roughly a quarter from before 1980, a quarter from the 1980s, a quarter from the 1990s and a quarter from 2000 on. The oldest homes cluster near downtown and inside the circle, where pipe can still be galvanized steel on the supply side, cast iron on the drains and clay out to the sewer. The big 1980s and 1990s tracts across South Corona, Sierra del Oro and the hills went in on slabs with copper supply lines, so pinhole leaks and slab leaks are among the most common calls there, and some houses from the late 1970s to the mid 1990s may still carry gray polybutylene supply pipe.

The newer neighborhoods are a different job. Dos Lagos, Eagle Glen and Green River Ranch are mostly plumbed in PEX or copper, and many of their homes have tankless heaters and recirculation pumps. On the hillside streets the main can deliver more pressure than a house needs, which keeps a pressure regulator working hard and eventually wears it out; the city says the regulator and the service line on the owner's side are the owner's to replace. Hard water is the citywide constant, about 8.5 grains per gallon on average, and it leaves scale in tank heaters, tankless units, faucet cartridges and fixtures alike. In condos and townhomes, units share walls and drain stacks, so the plumber pins down where a leak starts before anything is opened.

The City of Corona Utilities Department supplies drinking water across the city's roughly 45 square miles, collects and treats the wastewater, and runs a separate reclaimed water system for irrigation. In 2025 about 45 percent of the supply was local groundwater from the Temescal Subbasin, most of it treated by reverse osmosis at the Temescal Desalter; about 50 percent was Colorado River water arriving by way of Lake Mathews; and about 5 percent came from the State Water Project, bought through Western Municipal Water District. Stage 2 water rules took effect in 2016 and still apply: no watering from 10 a.m. to 8 p.m., none on Fridays, and leaks must be fixed. SoCalGas supplies gas, and Southern California Edison powers most of the city, with the city's own electric utility serving small areas near Dos Lagos, The Crossings, Corona Pointe and Princeland. Plumbing permits come from the City of Corona Building Division in Planning and Development, while addresses just outside city limits, such as Temescal Valley, are permitted by Riverside County Building and Safety (TLMA). Corona is home for us, so every street in its five ZIP codes gets our 24-hour emergency response, sent out from right here.

Corona borders Norco, Riverside and Eastvale. We serve those cities as well, and a call from any of them is handled from Corona, the same as calls from Corona. A person answers at every hour, the leak or clog is tracked to where it starts before drywall or flooring is disturbed, and work begins only after you sign the written estimate.