4 services · San Jose
Drains & sewer in San Jose, CA
A single slow sink is usually a local clog a plumber can clear in one visit. Several drains backing up at once, gurgling toilets or water at a basement floor drain point to the main sewer line, which may need cleaning, a camera inspection and sometimes repair.
- Licensed local plumbers
- The problem explained before work starts
- Price agreed before the job begins
Drains & sewer services in San Jose
Drain cleaning
UrgentIf one fixture is slow, the clog is usually in that fixture's branch line. If several drains back up at once, or the basement floor drain fills when you run the washer, the main sewer line is blocked and needs a larger cable or a jetter.
Hydro jetting
Hydro jetting cleans the full width of a drain pipe with high-pressure water, washing out grease, scale and fine roots that a cable only punches a hole through. It works best on sound pipe and is usually done after a camera inspection confirms the pipe can take it.
Sewer camera inspection
A sewer camera inspection runs a waterproof camera through the line from your house to the city main and records what it finds: roots, cracks, sags, offset joints or collapsed pipe. It's the best way to decide between cleaning, spot repair and replacement.
Sewer line repair
UrgentA damaged sewer line can be fixed with a spot repair, a trenchless liner, pipe bursting or an open-trench replacement. Which one fits depends on what the camera shows, how deep the pipe is, and what's on top of it, such as a driveway, trees or landscaping.
Local conditions
Drains & sewer in San Jose: what's different
Willow Glen and Rose Garden homes often have clay sewer laterals and cast-iron drains, and the neighborhoods' mature trees send roots into the joints. Repeat clogs in those homes usually mean roots rather than something flushed.
Post-war tracts in Cambrian and Evergreen have cast-iron or ABS drains under slabs that can crack with soil movement and age. The city provides sewer service, but the lateral from the house to the main belongs to the owner. A camera inspection shows whether cleaning, lining or replacement is the right fix before anyone digs.
- Water and sewer in San Jose
- Water service is split among San Jose Water (a private utility), San Jose Municipal Water and Great Oaks Water, depending on the address. The city provides sewer service.
- Permits in San Jose
- Plumbing permits are issued by the City of San Jose's Building Division in Planning, Building and Code Enforcement.
San Jose housing and plumbing
Willow Glen and Rose Garden homes often have galvanized supply and cast-iron or clay drains. The 1950s–70s tracts have copper supply now prone to pinhole leaks, often on slab foundations.
Other San Jose conditions that affect plumbing
- Hard water: Hard water builds scale in water heaters and tankless units, shortening their life.
- Slab leaks in copper: Copper lines under 1950s–70s slabs develop pinhole leaks, often found by warm floors or high bills.
- Earthquake readiness: California requires water heaters to be strapped, and flexible gas connectors reduce break risk.
- Older Willow Glen drains: Willow Glen and Rose Garden homes often have clay sewer laterals and cast-iron drains, and mature trees send roots into the joints, causing repeat clogs.
Neighborhoods and ZIP codes
Plumbers on Thawline cover San Jose and Santa Clara County, including Willow Glen, Rose Garden, Almaden Valley, Evergreen, Cambrian, Downtown. ZIP codes: 95101 · 95103 · 95106 · 95108 · 95109 · 95110.
When to call a plumber in San Jose
- Water backing up in the tub or shower when a toilet flushes
- Several fixtures draining slowly at the same time
- Water or sewage at a basement floor drain
- Gurgling from drains or toilets
- Sewer smell inside or a soggy patch in the yard
- The same clog returning within weeks of being cleared
How these problems start and how to choose between repair options is covered in the drains & sewer guide.
Drains & sewer questions in San Jose
Why do Willow Glen sewer lines keep clogging?
Are chemical drain cleaners safe to use?
More plumbing in San Jose
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