Plumbers in Bonsall, CA

A small unincorporated community near Oceanside

Bonsall is an unincorporated San Diego County community about 9 miles from central Oceanside in a straight line, with Vista as the nearest larger city. The 2020 Census counted about 4,500 residents. It is a rural inland area, with larger lots, hotter summers than the coast and occasional frost on exposed pipes during cold winter nights.

Rainbow Water and very hard water

Rainbow Municipal Water District serves an 83-square-mile area that includes the unincorporated communities of Rainbow and Bonsall plus parts of Vista, Oceanside and Fallbrook. Some edges of Bonsall may be served by other agencies, so check the name on your bill. Rainbow imports all of its water, State Water Project and Colorado River Aqueduct supply treated at Metropolitan's Robert H. Skinner plant in Temecula. It disinfects with chloramines, and parts of the system can switch to free chlorine under some operating conditions.

Rainbow's water quality report lists average hardness of 230 mg/L, about 13.45 grains per gallon, and calls it very hard. That level leaves scale inside water heaters and tankless units, crusts aerators and showerheads, and shortens the life of valves and cartridges, which is why softeners and regular water heater flushing are common in Bonsall homes. The district publishes a lead and copper service line inventory, and its report states no lead was detected in the distribution system. Rainbow's office line is (760) 728-1178.

Sewer is the exception, not the rule

Rainbow does run sewer service, with eight lift stations and about 60 miles of sewer main, but only in parts of its territory, and it has far fewer sewer customers than water customers. Many Bonsall homes are therefore not on municipal sewer and rely on a private onsite wastewater system. For those homes, a plumber can clear and inspect the line between the house and the tank; the system itself is a separate specialty. If you are unsure which you have, your Rainbow bill shows whether you pay for sewer.

Permits

As an unincorporated community, Bonsall has no city building department. Permits for plumbing work at unincorporated addresses go through the County of San Diego.

Gas and propane

SDG&E is the gas utility for San Diego County. If you smell gas, leave first, then call 911 and SDG&E at 1-800-611-7343 from a safe place. Some rural Bonsall homes may run on propane; in that case leave, then call 911 and your propane supplier.

Bonsall versus Oceanside, and calling

Oceanside is a city with its own water, sewer and permit office. Bonsall relies on a water district with very hard water, county permits and, for many homes, no sewer connection at all. No housing-age figure was confirmed here, so ask the plumber about pipe materials on the first visit. Call the number on this page and you will be connected with an independent plumber who covers Bonsall and settles pricing with you.