If plumbing fails in Montclair, close the main shutoff right away; for a gas smell, leave and call 911 and SoCalGas at 1-800-427-2200. Monte Vista Water District handles the water main, and the City of Montclair runs the sewer. For leaks, clogs and broken equipment inside your property, call the number on this page to be connected with a local plumber in Montclair.

Red flags that need a plumber now
- Corroded supply pipe that has started to leak or spray
- Sewage backing into a tub or floor drain, especially after heavy use
- A water heater that is leaking, or one with a scorched or rusted burner area
- Low or no pressure throughout the house combined with a wet spot outside
- Water coming through a ceiling below a bathroom
Small drips and slow sinks can wait for business hours. Steady leaks and backups cannot.
Why Montclair homes see more failures
Montclair grew out of former citrus orchards after World War II, and its housing is older than much of the region: the median home was built in 1969. Pipes that old have been in service a long time. The City itself encourages owners of older homes to have a plumber check for problems such as corroded pipe or lead from old plumbing, and an emergency visit is a reasonable time to ask about the condition of the rest of the system.
Water and sewer come from two different agencies. Monte Vista Water District supplies the water, and the City refers water quality and main water line questions to MVWD at (909) 624-0035. The City of Montclair handles sewer accounts, and work on the City's sewers requires a permit and a contractor with a CSLB Class A license, so a problem in the public main is not something a homeowner's plumber simply digs into. A backup confined to your own drains is a plumbing call; one affecting the street is a City matter.
Cost drivers on an urgent visit
- Time of the call. Nights, weekends and holidays usually cost more.
- Pipe condition. Brittle older pipe can turn a small patch into a longer replacement.
- Location. Lines under the slab or inside walls take more labor to reach.
- Permits. The City of Montclair Building Department, (909) 625-9477, handles permits and inspections for larger work.
How the call works
The number connects you with an independent plumber who covers Montclair. Say what is happening, give the address and note whether the water is off. Ask how after-hours rates are figured before agreeing to the visit. Timing depends on the hour and current workload, so no arrival time is promised.
Emergency Plumber questions in Montclair
Are older homes here more prone to plumbing emergencies?
Who do I call about a water main break or a leak in the street after hours?
Is a sewer backup my problem or the sewer agency's?
What should I have ready when I call?
More plumbing services in Montclair
Emergency Plumber nearby
Sources
Last updated: