Local plumbing notes: Riverside
Riverside's story runs through citrus. In 1873 Eliza Tibbets planted two navel orange trees from the USDA, and the survivor, the Parent Washington Navel Orange Tree at Magnolia and Arlington avenues, is a California Historical Landmark. The Mission Inn began as a boarding house in 1876 and is now a National Historic Landmark. Riverside incorporated on October 11, 1883, became a charter city in 1907, and is the seat of Riverside County. Mount Rubidoux, UC Riverside, Box Springs Mountain and California Citrus State Historic Park are all part of the city's landscape, the 91, the 60 and I-215 carry its traffic, the Santa Ana River runs along its edge, and March Air Reserve Base lies to the east. Jurupa Valley, Norco, Corona and Moreno Valley are its neighbors.
The housing comes in layers. Around downtown and in the Wood Streets, some of the oldest houses still get their water through galvanized steel and send waste out through cast iron, and their clay sewer laterals run under old street trees whose roots have had decades to find the joints. Arlington and La Sierra filled in with postwar tracts and 1960s and 1970s subdivisions, where the original pipe has been working for more than four decades. Orangecrest and Canyon Crest climb the hills with newer homes and younger plumbing. Per the ACS 2024 5-year estimates, the median Riverside home dates to 1976, 57 percent were built before 1980, and 64 percent are single-family detached; the other 36 percent are condos, townhomes, apartments and other housing types, where a leak is traced to the right unit before any wall comes open.
Water comes from one of two suppliers. Riverside Public Utilities, the city-owned utility, serves most homes, and in 2025 it met all of its demand with local groundwater from the Bunker Hill and Riverside basins. Some higher-elevation areas, Orangecrest and Mission Grove among them, are on Western Municipal Water District instead, and your bill names the one you have. RPU water averages about 12 grains per gallon, which is hard: it scales tank heaters, clogs aerators and wears out faucet cartridges and toilet fill valves. RPU also supplies electricity to the whole city, and it requires every backflow assembly to be tested at least once a year.
City of Riverside Public Works runs the sewer for nearly all of the city, and responsibility for the lateral is split at the property line. The homeowner maintains the pipe from the house up to that line; the city owns the lower lateral from the line to the main. When the plumber clears a backup and the camera finds the blockage on the city's side, it is reported to the city through 3-1-1. Repipes, water heater changes and sewer repairs are permitted through City of Riverside Building and Safety, and every permit is closed after inspection, with the heater fastened by two earthquake straps, its relief valve discharging to a safe place and any gas line pressure tested. Corona's center is about 11 miles from Riverside's, and the finished work carries a written workmanship warranty.
Riverside borders Jurupa Valley, Norco, Moreno Valley and Corona. We serve those cities as well, and a call from any of them is handled from Corona, the same as calls from Riverside. 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.
Neighborhoods we serve
- Downtown
- Wood Streets
- Arlington
- La Sierra
- Orangecrest
- Canyon Crest
Riverside ZIP codes we serve
- 92501
- 92503
- 92504
- 92505
- 92506
- 92507
- 92508





