Orange County · Los Angeles–Long Beach–Anaheim metro

Plumbing help in Anaheim, CA

Very Hard WaterOlder Pipes

Anaheim serves most of its customers from the Orange County groundwater basin, and the water is very hard. About two-thirds of homes predate 1980, so scale plus aging pipe drives most local plumbing work.

Call (833) 878-1592Plumbing help in Anaheim and Orange County

Chrome kitchen faucet running into a sink

Median home built: 1973
Built before 1980: 65%
Owner-occupied: 47%
Water hardness: Very hard; ≈ 18 grains/gal
Winter: Hard freezes are rare
Plumbing code: UPC

Common repairs in Anaheim homes

Water Softener Installation
At about 18 grains per gallon, softening protects heaters and fixtures.
Water Heater Repair
Scale and sediment build fast in tank heaters.
Repiping
Older homes have galvanized supply lines.

Anaheim's very hard water and your plumbing

Anaheim's water is about 300 ppm, roughly 18 grains per gallon (very hard); in 2025 the Orange County groundwater basin served more than 80% of customers, with the rest imported from Northern California and the Colorado River. [1]

≈ 18 gpg

SoftModerately hardHardVery hard

Grains per gallon, from the utility's published figures. Scale per USGS hardness classes.

Hard-water upkeep:Water heater flushing Water softeners Hard water and plumbing Noisy water heater

Emergency plumbing in Anaheim

Call (833) 878-1592

Shut off your main water supply if it's safe to do so. The emergencies below are listed most likely first for Anaheim homes, based on local conditions.

Anaheim's 1970s housing and its pipes

The median home in Anaheim was built in 1973, and 65% of homes predate 1980. Homes from that era were typically built with copper supply, early plastic (ABS or PVC) drains, some cast iron.

Median home: 1973

1900195020002025

Galvanized steel supply (1900–1960)
Copper supply (1950–2000)
Polybutylene (some homes) (1978–1996)
PEX / CPVC (1995–today)

Typical supply-pipe materials by construction year. Many older homes have been partly repiped since.

Common projects in homes like these:Repiping Sewer camera inspection Water line repair Brown or rusty water

Which plumbing rules apply in Anaheim

Plumbing here follows the 2025 California Plumbing Code, based on the 2024 Uniform Plumbing Code, effective January 1, 2026; plumbing contractors hold a CSLB C-36 license. [2]

Licensing:Check a plumber's license in California How to check a license

Plumbing services for Anaheim homes

Or start from:Plumbing problems Emergencies

Anaheim plumbing questions

How hard is Anaheim water?

Very hard: about 300 ppm, or 18 grains per gallon.

Where does Anaheim get its water?

Mostly the Orange County groundwater basin, plus imported Northern California and Colorado River water.

How do I check an Anaheim plumber?

Use the CSLB's Check a License search and look for the C-36 classification.

Are water softeners allowed in Anaheim?

Check current local rules on softener discharge before installing, and ask your installer about efficient, demand-initiated units.

How often should I descale a tankless heater in Anaheim?

At least yearly with water this hard, or on the manufacturer's schedule if shorter.

Sources (3)

U.S. Census Bureau, ACS 2024 1-year (B25035) · checked 2026-10-01
Anaheim Public Utilities, Water Hardness and Water Sources · checked 2026-10-01
IAPMO, 2025 California Plumbing Code · checked 2026-10-01