Repiping in La Mesa, CA

Common signs in an older house

• Water that comes out tinted after the house sits unused for a day or two
• Hot water flow noticeably weaker than cold at the same faucet
• Pinhole leaks in copper, often first noticed as a stain on a ceiling or wall
• Threaded gray pipe at the water heater or under the house
• Shutoff valves that are seized or drip when turned

Any one of these can be a local problem. Several together, in a house that still has its original pipe, usually means the system as a whole is near the end of its service life.

La Mesa conditions

Census data puts La Mesa's median home at about 1970, which is older than most of the county. Homes from that period and earlier were often plumbed with galvanized steel, which rusts from the inside until flow drops, or with early copper that can pit and pinhole over time. Many have already had a section or two replaced, leaving a mix of materials.

Helix Water District supplies the city. Its treated plant water averages about 12 grains per gallon of hardness, and it uses chloramines in distribution. That hardness leaves scale in valves, faucet cartridges and the water heater, which is why replacing fixture shutoffs during a repipe is a good idea. Helix states it has no lead pipes or service lines in its distribution system and offers an online lookup map. The pipe inside your house is outside the district's control.

The City of La Mesa Building Division says a plumbing permit may be needed for any addition to or change in a building's existing plumbing system, while simple fixture repair or replacement normally does not need one. A whole-house repipe is a change to the system, so the plumber should handle the application through the City's online permit portal. Homes in Mount Helix sit outside city limits, and those addresses go through the County instead.

What affects the cost

• Size of the house and number of bathrooms and fixtures
• Raised foundation with crawl space access or slab-on-grade
• PEX or copper and how the runs are laid out
• Plaster or drywall walls, and how much patching follows
• New shutoffs, hose bibs and water heater connections

What happens when you call

You'll be connected with an independent local plumber who covers La Mesa. Describe what you've seen and where. A plumber will typically check the pipe at the water heater and main shutoff, test pressure and then lay out the choice between targeted repairs and a full repipe.