When an El Cajon shower drips, fights you at the handle or can't hold a steady temperature, the valve's cartridge, washers or seats have usually worn, and the hard local water speeds that along. A plumber can often rebuild the valve from the front; replacing the body means opening the wall. Call the number on this page to be connected with a local plumber in El Cajon.
Why do shower valves wear out so fast in El Cajon?
Two things work against them. First, the water is hard. Helix Water District serves much of El Cajon, and its report puts water from its own treatment plant at an average of 206 mg/L as calcium carbonate, or about 12 grains per gallon. That leaves calcium on cartridges, stops and seats with every shower. Second, Helix uses chloramines as its distribution disinfectant, which can age rubber O-rings and washers. Some addresses get water from Padre Dam Municipal Water District instead; the City lists both agencies, so check your bill to see which one you have.
My house is from the 1970s. Will parts still be available?
Often, but not always. The median El Cajon home was built around 1974, and many bathrooms still have their first valve. That might be a two-handle compression valve with replaceable washers and seats, or an early single-lever model. Washers and seats for common two-handle valves are easy to find. Some early single-lever brands are no longer supported, and then the choice is a salvage repair or a new valve. A plumber will identify the brand from the handle, trim and cartridge before quoting anything, and will check whether the original galvanized or copper supply pipes behind the wall are sound enough to connect to.
Do I need a permit, and who do I call for it?
Permits in El Cajon go through the City's Building Safety Division in Community Development, reachable at 619-441-1726. Replacing a cartridge or washers is ordinary repair. Cutting out the old valve body and installing a new one is where you should ask whether a permit applies. The plumber you reach can tell you how they handle that for this kind of job.
A local note
El Cajon sits in an inland valley, so summer heat reaches attics and exterior walls. If the cold side of the shower runs warm for the first minute in July, that is warm pipe, not a bad valve. A drip that does not stop, a stiff handle or a temperature swing when someone flushes is the valve. If it will not shut off at all, close the main valve and call. For problems on the district side of the meter, Helix is at 619-466-0585 and Padre Dam at (619) 448-3111.
Shower Valve Repair questions in El Cajon
Does the hard water here shorten the life of a shower valve?
What kind of shower valve does an older house here usually have?
Which water agency serves my home, and why does it matter for a shower repair?
Will a water softener protect a new shower valve?
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