Slab Leak Repair in Montclair, CA

Signs of a leak under the slab

• The meter registers flow with every fixture and the sprinklers turned off
• A strip of floor that feels warm, often between the water heater and a bathroom
• Damp carpet, cupped wood or loose tile in one area
• Running-water sounds when the house is quiet
• Low pressure at some fixtures but not others
• A water bill that rises without any change in habits

Montclair homes and water

Montclair was built out from former citrus orchards after World War II, and census survey figures via city-stats.com put the median home at 1969. Pipe that old under a slab is more prone to pinholes at rub points, corroded joints and thinning walls. The City of Montclair itself advises owners of older homes to have the plumbing checked for problems such as pipe corrosion, which is good advice before a leak shows up as well as after.

Water and sewer are separate here. Monte Vista Water District provides water and handles questions about water quality and the main water line; call MVWD at (909) 624-0035 if water is surfacing at the meter or curb. The City of Montclair handles sewer accounts. Anything under the house is private plumbing.

What changes the cost

• Finding the leak. Isolating hot from cold, pressure testing each and listening through the slab.
• Spot repair or reroute. In a house this age, the plumber may recommend rerouting through the attic or walls rather than opening the floor, because the rest of the buried pipe is the same age.
• Whole-house repipe. Sometimes the better value when several leaks have already occurred.
• Floors and walls. Restoring tile, wood or drywall after the repair.
• Permits. City of Montclair Community Development, Building & Planning handles permits; the Building Department is at (909) 625-9477, with walk-in counter hours early morning and late afternoon.

When you call

You will be connected with an independent plumber who serves Montclair. Mention what the meter did with everything off, where you noticed warmth or moisture, and whether the house has had earlier leaks or any repiping. In a home from the 1950s or 1960s, that history often decides whether a single repair or a reroute makes more sense.