In Montclair, the City provides sewer service while Monte Vista Water District supplies water. With a median home built in 1969, many private sewer laterals here are old enough to crack, corrode or fill with roots, and a plumber repairs them. Call the number on this page to be connected with a local plumber in Montclair.

Signs of a sewer line problem
- Sewage rising in a shower or tub
- Toilets bubbling when another fixture drains
- Slow drains in every bathroom at once
- The same clog coming back weeks after cleaning
- Odor along the side yard or near the cleanout
Montclair's sewer and older housing
Montclair built out from former citrus orchards after World War II, and city-stats.com puts the median year built at 1969. Laterals from the 1950s and 1960s were commonly clay or cast iron, which crack, corrode and let roots in at the joints. The City itself advises having older homes checked for problems such as pipe corrosion.
Utilities are split. Monte Vista Water District supplies water, and the City of Montclair handles sewer accounts. The City adds that work on City sewers requires a permit and a CSLB Class A contractor, which matters if a repair extends beyond your lateral toward the public line. Properties just outside City limits that want Montclair sewer service have to go through irrevocable annexation with the Planning Department.
For a water main or water quality issue, Monte Vista Water District is at (909) 624-0035. For the public sewer, contact the City.
What affects the cost
- Extent of deterioration. Older cast iron or clay may be failing along much of its length, not just at one spot.
- Depth and what is on top. Driveways, patios and mature plantings add restoration work.
- Whether work reaches City sewer. Work on City sewers requires a permit and a CSLB Class A contractor.
- Permits. The City of Montclair Building Department, (909) 625-9477, handles permits; inspection requests go to (909) 625-9448.
What happens when you call
You are connected with an independent plumber who serves Montclair. Share which fixtures are backing up, how long it has been going on and whether the line has been cleared before. Expect the plumber to clear the line first and then run a camera to show the condition of the pipe, so you can decide between a spot repair, lining or a full replacement with the facts in hand. If the house has never had its lateral inspected, this is a good time to get a baseline recording.
Sewer Line Repair questions in Montclair
What is the sewer lateral under an older house usually made of?
Where does my share of the sewer pipe end and the agency's begin?
Why do roots keep finding their way into my sewer pipe?
How do I tell a main line problem from one stopped-up drain?
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