El Cajon's median home was built around 1974, so a lot of houses still run on supply pipe that has been in the walls for decades. When leaks repeat, water turns rusty or pressure drops across the house, a repipe is often the lasting fix. Call the number on this page to be connected with a local plumber in El Cajon.
Is a 1970s El Cajon house due for new pipe?
Not automatically, but it is worth checking. With a median build year of 1974, many homes in Fletcher Hills, Bostonia and the older streets near Main Street were plumbed with copper or, in earlier houses, galvanized steel. Galvanized pipe rusts from the inside, narrowing until flow drops and the water runs brown. Copper of that age can develop pinholes, especially at bends and fittings. A plumber can read the condition from what is exposed at the water heater, under sinks and at the main shutoff. A house with one old leak and clean water may only need a repair. A house with leaks in several rooms usually justifies replacing the system.
Does the Helix lead map tell me what is inside my walls?
No. El Cajon is split between Helix Water District and Padre Dam Municipal Water District, depending on the address. Helix states that it has no lead pipes or service lines in its distribution system and offers an online lookup map, but it also notes that private plumbing is outside its control. Interior supply lines belong to the owner. Helix's treated plant water averages about 12 grains per gallon of hardness, and its distribution water is chloraminated, so scale at valves and fixtures is a normal part of life on Helix water. Padre Dam customers should check their own district's report.
What permit does a repipe need in El Cajon?
Building permits go through the City of El Cajon Building Safety Division at 200 Civic Center Way, with plan submittals through its online Project Assistance Center. The City's building permit pages do not spell out plumbing permit rules, so ask the plumber to confirm what the Division requires before any wall is opened. Replacing a home's supply piping is a major alteration, and an inspection before the walls close protects you when you sell.
A local note
El Cajon sits in an inland valley where summer attics get hot and winter nights run colder than at the coast. If new lines go through the attic, ask how they will be insulated and secured, and have any exterior runs protected where they come out of the wall.
Repiping questions in El Cajon
What supply pipe is a house from this era likely to have?
Does the water agency's lead service line inventory cover the pipes in my walls?
Will new pipe fix weak water pressure?
Should shutoff valves and the water heater connections be redone too?
More plumbing services in El Cajon
Repiping nearby
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