Plumber in the Santa Clarita Valley

Towns across the valley

Plumbing by Kirk works from a shop in Valencia, inside the City of Santa Clarita, and takes calls across the Santa Clarita Valley: Santa Clarita itself, Valencia, Newhall, Saugus, Canyon Country, Stevenson Ranch and Castaic.

Those places share a valley but not one set of rules. Valencia, Newhall, Saugus and Canyon Country were the four communities in the new City of Santa Clarita in 1987, and each still takes in some county land. Stevenson Ranch and Castaic are unincorporated Los Angeles County. Here is what that means for a home in each.

The miles are road distances from the shop to the point the US Geological Survey maps for each town, or to City Hall for Santa Clarita, by a routing estimate without traffic. They measure distance, not arrival time.

Who issues plumbing permits in the Santa Clarita Valley

The office that issues a plumbing permit follows the address: whether the lot sits inside a city’s limits, not which town name it goes by. Two offices cover the valley.

To check an address, use the Residency Status Verification Tool on the city’s annexations page, or LA County’s online service locator, which shows whether a point is unincorporated and which county office covers it.

The city’s building code leaves the addition, alteration, replacement or relocation of water, sewer, drain and vent piping out of the ordinary repairs that need no permit, while it exempts swapping a faucet, sink, toilet or shower head for one of the same type. LA County requires a permit for any water heater installation or replacement. Kirk’s crew pulls the permit when the city or county requires one, from whichever office covers the address.

Salt-based softeners are banned in the valley

Automatic, self-regenerating salt-based water softeners are prohibited throughout the Santa Clarita Valley. The ban comes from the Los Angeles County Sanitation Districts, and as they describe it, the valley includes the City of Santa Clarita and the unincorporated communities around it, such as Stevenson Ranch, Castaic and Valencia by FivePoint. The ban on installing them took effect in 2003, and Measure S (2008) required existing home softeners that drained to the sewer to come out by June 30, 2009. It covers softeners that use rock salt, sodium chloride or potassium chloride.

The City of Santa Clarita also writes the ban into its own plumbing code: automatic or self-regenerating systems that use sodium chloride or potassium chloride are prohibited in the city, and so are softener systems that discharge into a dry well, unless the Building Official approves one whose discharge stays within the Regional Water Quality Control Board’s limits. The code makes an exception for portable exchange tanks installed and maintained commercially, as long as no brine goes into the public sewer, and permits salt-free water conditioning systems once the Sanitation Districts approve them.

The ban reached Valencia by FivePoint on October 1, 2026, when an ordinance of the Newhall Ranch Sanitation District took effect. Valencia has the details, including the buy-back for softeners installed there before that date.

Moving the brine somewhere else doesn’t get around it. The Sanitation Districts say that putting softener brine onto land or into a dry well is illegal, even with potassium chloride, and the Los Angeles Regional Water Quality Control Board won’t issue permits for either.

The reason is chloride. The valley’s wastewater is treated at the Valencia and Saugus water reclamation plants, and the Sanitation Districts had to build an advanced treatment facility at the Valencia plant, in operation from 2023, to take chloride out of wastewater before it is released into the Santa Clara River.

What the Sanitation Districts list as allowed: portable exchange tank softeners, salt-free water conditioning systems, and other treatment such as reverse osmosis and carbon filtration. They don’t endorse any product. Salt-free conditioners aim to cut scale, and the Water Quality Association notes that such anti-scale devices don’t reduce the total calcium or magnesium in the water and aren’t proven to produce soft water. Water softeners compares the allowed systems and what each does about scale.

City of Santa Clarita residents who still have a softener they own may be eligible for the Sanitation Districts’ free removal program; rented units aren’t eligible. Questions about the ban go to the Sanitation Districts at 1-877-CUT-SALT or cutsalt@lacsd.org.

How hard the water is, and the backflow rule

SCV Water is the valley’s regional water provider, formed on January 1, 2018, when the local water suppliers merged. Its 2026 water quality report, covering 2025, puts the hardness of its groundwater at 354 mg/L on average, in a range of 220 to 480, and of its imported surface water at 160 mg/L, with some of the surface water data from 2024. Converted at 17.1 mg/L per grain, that is about 20.7 and 9.4 grains per gallon. The US Geological Survey counts anything over 180 mg/L as very hard, and notes that hard water forms scale in water heaters and pipes.

What reaches a given tap depends on the mix. In 2025 about a third of SCV Water’s supply was groundwater and two thirds imported water, served in various proportions across its area, and the agency says the water can seem harder than usual in a drought, when it relies more on groundwater. Its report doesn’t break the mix down town by town.

Some addresses are on other systems. LA County Waterworks District 36, whose service area takes in the Hasley Canyon area, has SCV Water as its wholesale water provider, and the same report gives the district’s own hardness: 270 to 470 mg/L, 355 on average.

SCV Water also has a backflow rule. Where a property has a cross connection, the owner has to install and maintain a backflow prevention assembly and have it tested every year by a tester certified by the American Water Works Association, the American Society of Sanitary Engineering or the American Backflow Prevention Association, with passing results sent to backflow@scvwa.org. A missed test brings a fee of $200 for each month out of compliance, and after six months domestic water service is shut off. District 36 accepts testers certified by the LA County Department of Public Health.

Neighborhoods and the towns they belong to

Some addresses go by a neighborhood name. Here is which side of the city line each one sits on, and the town page that covers it.

City or county decides which office issues the permit, so check a neighborhood address the same way as any other. To book a plumbing job in any of these towns, call the shop with the address.