Plumber in the College Area, San Diego

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Courtesy Plumbing works on houses and small rentals all over the College Area, the neighborhood on Montezuma Mesa around San Diego State University. Water heaters, leaks, fixtures, pressure regulators, repiping and gas lines are our work, Monday through Friday from 8 AM to 5 PM. The one job we don’t take is drain clearing. Clogs and backed-up lines are handled by Drain Mob, a partner company, and we’ll give you their contact if that’s your problem. If you’re not sure your street is in it, here are the edges. Interstate 8 is the northern line and El Cajon Boulevard the southern one. On the east it stops at 73rd Street and the La Mesa city line, and Montezuma Road and Collwood Boulevard mark the southwest. Kensington and Talmadge sit to the west. Most of the neighborhood grew after San Diego State College moved onto the mesa in the 1930s. Many houses near SDSU date from that decade or from the building wave after World War II.

Owning a Rental Near SDSU

When four or five adults share a house, it gets used harder than a family home: showers back to back every morning, laundry most days, a toilet that never gets a rest. Parts that last years in a quiet household wear out sooner. If you own a rental near campus, these four checks prevent most of the early-morning calls:
  • The water heater. A tank sized for a couple runs cold when several people shower in a row. Read the manufacture date on the label. Tank heaters usually last 8 to 12 years, so once yours is past ten, budget for the replacement instead of waiting for the leak. While you’re there, look at the earthquake straps, which state law (Health and Safety Code 19211) requires on every tank-type heater.
  • House water pressure. Code says under 80 psi, and a failed pressure regulator is behind a lot of burst washer hoses and toilet supply lines. One of our customers found out the hard way: a toilet supply line let go while the house was empty, and the pressure turned out to be 110 psi. A gauge on an outside faucet answers the question in a minute, and our pressure regulator page explains the fix.
  • A main shutoff tenants can actually use. Show them where it is, then make sure it turns. An old gate valve that hasn’t moved in years can stick or break off in your hand. A quarter-turn ball valve is the usual replacement.
  • Toilets that keep running. A worn flapper or fill valve can waste water for months without a sound anyone notices. If the tenant isn’t paying the water bill, nobody may mention it. A sudden jump on your bill is often the first sign.
When something does fail at a rental, the clock matters. In one case, tenants reported a ruptured water heater at 8 in the morning, and a new tankless unit was installed and running that evening. If your heater is acting up but hasn’t quit, start with our water heater repair page.

About 14 Grains of Hardness in Every Glass

College Area homes get City of San Diego water, and it’s hard. The City treats water at three plants, and the service areas overlap, so you can’t always know which one feeds your street. It barely matters. The City’s 2025 Annual Drinking Water Quality Report puts all three within half a grain of each other:
Treatment plant Average hardness (grains per gallon) Range in 2025
Alvarado 13.8 11.9 to 15.8
Miramar 14.1 11.7 to 16.6
Otay 14.2 11.7 to 15.8
  That’s harder than what Helix Water District delivered next door in La Mesa and El Cajon in 2025, which averaged 12.0 grains. The minerals behind it are calcium and magnesium, and heating the water makes them drop out as scale. In a tank heater it settles on the bottom and you hear it as a rumble when the burner fires. In a tankless unit it coats the heat exchanger, which is why we recommend descaling a tankless heater every year on City water. You’ll also see it as white crust on aerators and showerheads, and it shortens the life of toilet fill valves. If you’re replacing fixtures every couple of years or putting in a tankless heater, it’s a good time to consider whole-home water filtration. The Halo 5 unit we put in takes out sediment, reduces the chloramine taste the City’s disinfection leaves behind, and changes how calcium behaves so less of it bonds to metal, all without salt or brine.

Older Houses and the Pipe You Own Under the Yard

Houses built in the 1930s and 1940s were commonly plumbed with galvanized steel supply pipe, with cast iron or clay carrying waste out to the street. Galvanized corrodes inside the pipe wall and slowly closes up, so trouble shows gradually: a shower that loses force, rusty water after a weekend away, a drip at a threaded fitting. Plenty of these houses were repiped long ago, so check before you worry. Under a sink, gray threaded pipe means galvanized; copper looks orange-brown; PEX is flexible plastic in red, blue or white. The sewer line from your house to the City main, called the lateral, belongs to you. The City treats roots, grease and breaks in it as the owner’s problem and won’t dig on private property. If you’re buying an older College Area house, or you’ve had more than one backup, a sewer camera inspection shows the condition of that pipe before you spend money on it. Clearing the clog is Drain Mob’s job; finding out why it keeps happening and repairing the line is ours.

Quick Answers for College Area Homeowners

Do I need a permit to replace a water heater?

Yes. The College Area is inside the City of San Diego, and the City’s Simple No-Plan permit covers a straight tank water heater replacement. Tankless installations aren’t covered by that permit and need a different one. When we do the installation, the permit and the inspection appointment are part of our job.

Who pays for a leak between the water meter and the house?

You do. The City repairs leaks on its side of the meter; anything on the house side is the owner’s responsibility. If water is coming up at the meter box or the street, report it to the City’s water hotline at 619-515-3525.

Are there lead pipes in the water lines here?

The City’s inventory of service lines found no lead in its system. Lead can still come from plumbing inside a house, so if you have very old fixtures or solder and want certainty, a private lab test is the way to check. We’re a licensed California contractor (CSLB #910268), started in 2007 by master plumber Tony Misleh. Reach us at (858) 567-0544 on a weekday between 8 and 5, or tell us what’s going on through our Contact Us page and we’ll set a time to come out.

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