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Ventura County · Oxnard–Thousand Oaks–Ventura metro

Plumbing Services in Simi Valley, CA

Need help with a slab leak, a failing water heater or a clogged drain in Simi Valley? Call (833) 878-1592 to describe the problem and get connected with a licensed local plumber.

Call (833) 878-1592By calling, you agree to be connected with an independent plumbing contractor serving your area. Calls may be recorded for quality and training. The call and referral are free, and you are never obligated to hire.Request service online

Calling is free. Repairs are done by independent, licensed plumbing companies serving Simi Valley and Ventura County.

Plumbing help in Simi Valley

Plumb Right Now arranges plumbing repair, drain and sewer service, water heater work and emergency help in Simi Valley, CA, through independent licensed local plumbers. The calls that come up most here are slab leak repair, water heater replacement and repiping. Call (833) 878-1592 to describe the problem and get connected with a local plumber.

Plumber fitting threaded steel pipe
Stock photo of residential plumbing work.

Most requested plumbing services in Simi Valley

Start with the service that matches your problem. Services marked “Common in Simi Valley” are the calls local housing and conditions produce most in Simi Valley.

Emergency plumbing in Simi Valley

Call (833) 878-1592By calling, you agree to be connected with an independent plumbing contractor serving your area. Calls may be recorded for quality and training. The call and referral are free, and you are never obligated to hire.

Shut off your main water supply if it's safe to do so. The emergencies below are listed most likely first for Simi Valley homes, based on local conditions. See also what to do in a plumbing emergency.

When to call, and what to do first

For the problems Simi Valley homeowners call about most, and why they come up here:

  • Slab Leak Repair

    Why it comes up in Simi Valley: Copper under 1960s–80s slabs develops pinhole leaks.

    Signs:
    Warm floor spots, sound of running water, a spinning meter
    Urgent when:
    Water surfacing through the floor or a large bill jump
    Before help arrives:
    Close the main shutoff if water is visible
    Repair or replace:
    One leak: spot repair. Repeated leaks: reroute the lines
  • Water Heater Replacement

    Why it comes up in Simi Valley: Hard imported water scales tanks.

    Signs:
    Water around the tank base, rusty hot water, a tank past 10 years
    Urgent when:
    The tank itself is leaking
    Before help arrives:
    Turn off gas or power and close the cold-water valve
    Repair or replace:
    Leaking tank: replace. Failed part on a younger tank: repair
  • Repiping

    Why it comes up in Simi Valley: Repeated leaks in aging copper make a repipe worthwhile.

    Signs:
    Rusty water, falling pressure, repeated pinhole leaks
    Urgent when:
    Leaks keep recurring in different places
    Before help arrives:
    Note where leaks and rust appear; check the pipe at the water heater
    Repair or replace:
    One leak: repair. Failing pipe throughout: repipe

Why Simi Valley homes need these repairs

Simi Valley is a mostly owner-occupied suburb of 1960s–80s tract homes in a valley north of Los Angeles. Most of its water is State Water Project water imported through Calleguas, with some local well water, and hard water, slab leaks and summer heat drive the calls.

Local conditions behind Simi Valley plumbing problems

Median home built
1979
Built before 1980
52%
Owner-occupied
74%
Water hardness
See below
Winter
Hard freezes are rare
Plumbing code
Local

Simi Valley service pages

Pipe problems in Simi Valley's 1970s homes

The median home in Simi Valley was built in 1979, and 52% of homes predate 1980. Homes from that era were typically built with copper supply, early plastic (ABS or PVC) drains, some cast iron, which is where leaks, low pressure and drain problems usually start as they age.

Median home: 1979
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.

Simi Valley's water supply and your plumbing

Ventura County Waterworks District No. 8 buys most of Simi Valley's water from Calleguas Municipal Water District: State Water Project water treated at MWD's Jensen plant in Granada Hills and piped in. [1]

The district also owns two wells in Tapo Canyon feeding the Tapo Canyon Water Treatment Plant, and delivers over 23,000 acre-feet a year to about 24,000 connections. [2]

Simi Valley plumbing questions

How do I know if my Simi Valley home has a slab leak?

Warm spots on the floor, the sound of running water with everything off and a meter that keeps moving are the usual signs; a plumber can pinpoint it before opening the floor. Why it comes up in Simi Valley: Copper under 1960s–80s slabs develops pinhole leaks.

When is a leaking water heater an emergency in Simi Valley?

A leak from the tank itself won't stop and usually means replacement; turn off the gas or power and the cold-water valve, then call. Why it comes up in Simi Valley: Hard imported water scales tanks.

Where does Simi Valley's water come from?

Mostly State Water Project water bought from Calleguas, plus well water from Tapo Canyon.

Is all of Simi Valley on District No. 8?

Most of the city is, but a private water company serves some areas. Your bill names the provider.

Why do Simi Valley homes get pinhole leaks?

Aging copper lines thin from the inside over decades. After a few leaks, a repipe often costs less than repeated repairs.

Is Simi Valley water hard?

Yes. Imported water is hard, so softeners and yearly water heater flushes are common.

Sources (3)
  1. U.S. Census Bureau, ACS 2024 1-year (B25035) · checked 2026-10-01
  2. City of Simi Valley, Waterworks Services · checked 2026-10-05
  3. City of Simi Valley, Waterworks Services · checked 2026-10-05
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