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.
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.

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.
- Slab Leak RepairCommon in Simi ValleyLocating and fixing leaks in pipes under the foundation.
- Water Heater ReplacementCommon in Simi ValleyReplacing a failing or leaking tank heater.
- RepipingCommon in Simi ValleyReplacing old galvanized, polybutylene or failing copper lines.
- Sewer Camera InspectionOlder homesVideo inspection to find the cause of drain and sewer problems.
- Emergency PlumberBurst pipes, major leaks, sewage backups and no-water situations.
- Drain CleaningSlow drains, recurring clogs and backed-up sinks, tubs and showers.
- Leak DetectionHidden leaks behind walls, ceilings or floors, or a bill that suddenly jumps.
- Water Heater RepairNo hot water, leaking tank, strange noises or uneven temperature.
- Sewer Line RepairRecurring backups, sewer odors, slow fixtures or a damaged sewer line.
- Burst Pipe RepairStopping and repairing burst or split pipes.
- Pipe RepairLeaks, corrosion, cracked lines and low pressure from damaged pipes.
- Toilet RepairRunning, clogged, leaking or weak-flushing toilets.
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
- Water Heater Replacement in Simi Valley, CAWater Heater Replacement in Simi Valley, CA: hard imported water scales tanks.
- Slab Leak Repair in Simi Valley, CASlab Leak Repair in Simi Valley, CA: copper under 1960s–80s slabs develops pinhole leaks.
- Repiping in Simi Valley, CARepiping in Simi Valley, CA: repeated leaks in aging copper make a repipe worthwhile.
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.
- Galvanized steel supply (1900–1960)
- Copper supply (1950–2000)
- Polybutylene (some homes) (1978–1996)
- PEX / CPVC (1995–today)
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)
- U.S. Census Bureau, ACS 2024 1-year (B25035) · checked 2026-10-01
- City of Simi Valley, Waterworks Services · checked 2026-10-05
- City of Simi Valley, Waterworks Services · checked 2026-10-05
