How to Check for a Water Leak in Your Mission Viejo Home: A Room-by-Room Walkthrough Before You Call Anyone
A practical 30-minute leak check for Mission Viejo homes, from the kitchen and baths to the garage water heater, pressure regulator and yard, plus the signs that…
Most Mission Viejo houses went up between the late 1960s and the 1980s, from the early tracts around Lake Mission Viejo to the homes near Casta del Sol and the neighborhoods north of Oso Parkway. Many still have their original copper supply lines and original shutoff valves. That combination means small leaks are common, and the earlier you catch them, the cheaper they are to deal with. You can do a useful check yourself in about half an hour.
Before you start
Pick a time when nobody will run water. Grab a flashlight, a few paper towels and your phone for photos. Note the reading on your water meter, which for most Mission Viejo homes is in a box near the curb. Depending on your street, your water comes from either the Santa Margarita Water District or the Moulton Niguel Water District, and both meters work the same way.
Kitchen and laundry
- Open the sink cabinet and wipe the angle stops, supply lines and dishwasher connection with a dry towel. Any dampness on the towel is a leak.
- Look at the cabinet floor for swelling, staining or a musty smell.
- Pull the refrigerator out if you can and check the ice maker line behind it.
- At the washer, look for bulges or cracks in the rubber hoses and rust at the valve box.
Bathrooms
- Check the floor around each toilet base for soft spots or discolored grout.
- Run a dye test in each toilet tank to catch a silent flapper leak.
- Look at the ceiling below upstairs bathrooms for faint rings or bubbling paint.
- Tap the tile around showers. Hollow sounds or loose tiles near the valve can mean water behind the wall.
Garage and water heater
Mission Viejo water heaters are usually in the garage. Look at the drain pan, the floor around the tank, the flex connectors on top and the relief valve discharge pipe. A relief valve that drips can point to high pressure or a missing expansion tank. While you are there, find the pressure regulator near where the main line enters the house. Many original regulators have failed by now, and high pressure strains every fitting downstream.
Outside
Walk the hose bibs and the irrigation valves. Look for a patch of lawn that stays green or soggy in dry weather, especially between the meter and the house.
Finish with the meter
After about thirty minutes with no water used, read the meter again. If the number moved, there is a leak somewhere, even if you could not see it. That is when professional leak detection is worth it, because the most expensive leaks are often under a slab or inside a wall.
When leaks keep coming back
If you are finding a new pinhole every year or two, patching is getting you nowhere. A whole-house repipe replaces the tired copper and all the stops at once. Mission Viejo requires a plumbing permit, and we handle the paperwork and inspections.
Related reading
High pressure is a common cause of leaks, so read about pressure reducing valve replacement, and learn the warning signs of a slab leak. Neighbors can visit Laguna Hills, Lake Forest and Ladera Ranch, or see all cities at repipeinc.com.
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Written by Repipe OC · CSLB #1087885 C-36 · 23821 Hillhurst Drive, Laguna Niguel, CA 92677 · (949) 524-2362