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(562) 539-0382

Los Angeles County · 3 ZIP codes

Plumbing in La Mirada: county sewers and city permits

La Mirada runs its own permit counter but relies on Los Angeles County crews for sewer maintenance. That split decides who you call when something backs up, and who pays for the fix.

Call (562) 539-0382

How La Mirada’s sewer system is run

La Mirada’s sewer collection system has about 120 miles of gravity sewer lines and four pump stations. The city’s Public Works Department manages it, and day-to-day field maintenance is handled through the Consolidated Sewer Maintenance District, which Los Angeles County Public Works runs.

If you see sewage coming up in the street or from a manhole, that’s a public main issue. If the backup is inside your house or at your cleanout, it’s almost always in your own lateral.

Your lateral, from the house to the main

Los Angeles County Public Works is plain about ownership: homeowners maintain the lateral from their home to the main sewer line, which is usually in the street or a nearby easement. That includes the part of the lateral under the asphalt and street landscaping.

So a root intrusion, crack or collapse anywhere along the lateral is the owner’s repair. A camera inspection shows where the problem is before anyone quotes a fix.

Permits at City Hall

La Mirada issues its own building permits, including plumbing permits. The city requires a permit to add, alter, construct, install, move, remove, repair or replace plumbing, which covers most jobs beyond simple fixture swaps. The Building and Safety counter is at City Hall, 13700 La Mirada Boulevard.

A licensed plumber usually pulls the permit and books the inspection. Ask for that to be spelled out in your quote.

Two water companies

La Mirada gets its water from Suburban Water Systems and Golden State Water Company, depending on the neighborhood. Your bill tells you which one serves you, and that’s who to call about the meter, a leak adjustment or water quality.

Before you call

Note if the problem is one fixture or the whole house, and say if you’ve seen anything in the street. If you know where your cleanout is, clear any plants away from it so the plumber can reach it quickly.

FAQ

La Mirada questions

Who maintains the sewer main in La Mirada?

The city's Public Works Department manages the system, and the field maintenance is done through the Consolidated Sewer Maintenance District run by Los Angeles County Public Works.

Where do I get a plumbing permit in La Mirada?

At the Building and Safety counter at City Hall, 13700 La Mirada Boulevard. The city requires a plumbing permit to add, alter, repair or replace plumbing.

Sources, checked September 2026

Need a plumber?

Plumbing trouble in La Mirada? Tell us where and what.

(562) 539-0382
Call (562) 539-0382