What to know about plumbing in La Palma
Dairyland was the first name. When the city incorporated in October 1955, its roughly 500 residents were outnumbered by cows, and 18 dairies once ran inside today's limits. In 1965 it took the name of its main street, La Palma Avenue. Then the tracts arrived: almost 10,000 residents by 1970 and more than 15,000 by 1980, when most of the homes standing now were already built. Central Park and the Civic Center at 7821 Walker Street were among the young city's first projects, and Centerpointe, the business district north of Orangethorpe Avenue and the 91, came in the early 1980s. The La Palma Promenade, a 175-foot greenbelt on the Edison right-of-way, crosses the city from one side to the other and links neighborhoods to Central Park; Denni Street Park and El Rancho Verde Park are two more of its green spaces. La Palma Avenue, Valley View Street, Walker Street and Moody Street are its main streets. Buena Park borders La Palma on the east and Cypress on the south, and the county line wraps around the north and west.
The housing here is close to uniform. ACS 2020-2024 5-year estimates count about 5,200 units, the fewest of the seven cities with a page on this site, and give a median year built of 1972. Eighty-one percent predate 1980, about three quarters went up in the 1960s and 1970s alone, and 66 percent are single-family detached; only about 100 units were added from 2000 to 2014. So one street's plumbing tends to match the next: supply pipe, drains and laterals of the same decade, aging side by side. In houses of that era, copper supply lines can thin out and pinhole, cast iron drains collect scale, and the joints of a clay lateral let roots in. A slow drain that keeps coming back is usually the pipe itself, not one bad clog.
The City of La Palma Water Division runs a small system of its own: two wells, two reservoirs, about 39.7 miles of mains and about 4,370 connections, all in a single pressure zone on flat ground. Golden State Water serves a small part of the city, some homes and school properties among them, and your water bill names the supplier. About 97 percent of the City's water in fiscal 2024-25 was local groundwater, and that well water averaged about 8.6 grains per gallon in 2025, the softest of the seven cities on this site, though the imported share ran about 14. Every service line, the customer-owned side included, was found to contain no lead. About 225 backflow assemblies in town must be kept in repair and tested every year by a tester on the County list. Stage 1 water rules allow landscape watering three days a week, never from 9 a.m. to 6 p.m., and a leak has to be repaired within two days of the City's notice.
The City runs about 30 miles of gravity sewer serving more than 4,000 connections (2014 figures), and the Orange County Sanitation District treats the flow. Municipal Code 34-17 is plain about the rest: the owner answers for the house sewer and the lateral up to and including the wye, tee or saddle at the main, routine and emergency cleaning included. Digging in the street needs a City encroachment permit first, and only state-licensed contractors who also hold a City business license may install laterals. Plumbing permits come from the Building and Safety Division in Community Development and are handled online through OpenGov, under the 2025 California codes as the City adopted them with local amendments. No permit closes until the inspection passes, which for a water heater means two earthquake straps and a relief valve draining to a safe spot, and for gas piping a pressure test that holds. La Palma calls are handled from Fullerton, and a written workmanship warranty covers what we finish there.
La Palma borders Buena Park and Cypress. We take calls from each of those as well, and the plumber for any of them comes from our location nearest that address. Someone picks up the phone around the clock, the plumber hunts down the true starting point of a leak or clog before a wall or floor gets cut, and the work waits for your signature on the written estimate.
La Palma ZIP codes
- 90623