Plumber in San Pedro, CA

San Pedro Sewer Lines

Whose Pipe Is the Sewer Lateral in San Pedro?

The property owner, from the house all the way out to the main. San Pedro is part of the City of Los Angeles, so the city’s sewer rules apply here as they do in every other part of Los Angeles. LA Sanitation and Environment, or LASAN, divides the private line, the lateral, into two pieces. The upper lateral runs from the building to the property line, and the lower lateral carries on from the property line to the middle of the street, where the public main lies. Both pieces are the owner’s to maintain and repair. LASAN explains why: a lateral serves just one lot, so its repairs cannot be charged to the city’s other ratepayers. The Bureau of Engineering traces the rule to a long-standing city policy that rests on an opinion of the City Attorney, and it says that roots blocking a lateral are the owner’s problem whether they got in on private land or under the public right-of-way.

The main is the city’s. LASAN runs more than 6,700 miles of public sewer, and San Pedro’s wastewater goes to the Terminal Island Water Reclamation Plant, which the city built in 1935 to serve its harbor area. LASAN says about 60 percent of the flow reaching the plant comes from nearby industry and the rest from homes.

Work Under the Sidewalk and the Street

• Inside the property line. LASAN says a plumber holding a standard plumbing license may repair the part of a lateral that lies on private property. That work goes under an LADBS permit, and sewer alteration, repair or replacement is on the department’s list of express permits.

• Past the property line. The Bureau of Engineering’s permit manual requires its sewer permit, the S-Permit, for any repair, replacement or rehabilitation of a lateral in the public right-of-way, and only an active bonded sewer contractor can be issued one. The city keeps a list of approved bonded sewer contractors, and each approval runs for one year. The bureau’s Harbor District Office is at 638 Beacon Street, in the building that also houses the LADBS counter.

• Lining and pipe bursting. Both may be used under the street, by a bonded sewer contractor only, and the lateral is televised before the work and again after it. An inspector from the Bureau of Contract Administration decides whether the pipe is fit to line and checks the finished job.

Here is how our part of the job works. We clear San Pedro laterals all the way out to the main. A repair goes in without a trench wherever the pipe allows, and digging is the last resort. When a repair reaches the section under the sidewalk or the street, we keep going, under the S-Permit the Bureau of Engineering requires, until the lateral is sound out to the main.

The City’s Two Lateral Rebates

Owners who pay the city’s sewer service charge can apply through MyLA311 for two LASAN rebates, one for televising the lateral and one for repairing it, while each year’s funds last. LASAN wants a licensed and bonded sewer contractor, a recorded video that opens on the property address and a written report. Our complimentary camera look after a main line clearing is not recorded and comes with no report, so it will not count. If you mean to apply, say so before the work is booked.

Backwater Valves on Sloping Lots

Much of San Pedro is built on slopes, and a house set below the road in front of it can end up with its lowest drain under the street’s manhole cover. LASAN’s rule covers exactly that case: when the lowest plumbing fixture in a home sits lower than the cover of the street manhole, the property needs a backwater valve, which closes by itself when sewage backs up in the main. It goes in under an LADBS permit and should be checked regularly after that. On a sloping lot we put a camera through the lateral before suggesting any repair.

When Sewage Backs Up in San Pedro

• Stop using water. Whatever goes down a sink, shower, toilet or washer ends up in that one lateral and comes back up at the lowest drain.

• Look at the street. Sewage coming out of a manhole or running down the gutter points to the city’s main. LASAN’s customer care center takes those reports at any hour on 1-800-773-2489.

• Know the warning signs. LASAN lists drains that empty slowly, water that stands in the shower, toilets that gurgle and wet patches in the yard over a broken pipe.

• Street clear, house backing up? Then the stoppage is most likely in your own lateral, and that is a call to us. We open the line from an outside cleanout when the house has one. When it does not, we reach the line from the roof vent or by pulling a toilet, and after the line flows again we can install a cleanout for next time.

San Pedro Water

Where Does San Pedro’s Water Come From?

From the Los Angeles Department of Water and Power, LADWP, the utility the city owns. Its Drinking Water Quality Report for 2025 places San Pedro among its Harbor communities, which are supplied with imported water from the State Water Project and the Colorado River Aqueduct, bought from the Metropolitan Water District of Southern California. For the Harbor area, the report gives its test results from three of the district’s treatment plants.

How Hard Is San Pedro’s Water?

At the hard end of the city’s range, by LADWP’s own figures. For 2025, average total hardness at the three plants whose results apply to the Harbor area was 234, 236 and 140 parts per million, with single results reaching 280. LADWP counts 17.1 parts per million as one grain per gallon, which makes those averages about 8 to 14 grains, and its own guide calls anything over 7 grains hard. Its water quality questions page groups the Harbor with the city’s eastern neighborhoods and lists that area as the hardest in 2022, at an average of 16.3 grains. Minerals come out of water as it is heated, which is why the utility tells customers to flush a water heater at least once a year.

The Meter, the Valves and Who Fixes What

LADWP’s rules for water service say its control and responsibility end at its shutoff valve or meter, and that it is not liable for water escaping from burst pipes or faulty fixtures on the property. Every service connection has a control valve on the street side of the meter, which LADWP will operate on request, day or night, in an emergency, and the same rule advises customers to put a valve of their own on the pipe between the meter and the building. That house valve is the one to close when a pipe bursts. If yours is missing or will not turn, we replace it with a working emergency shutoff valve. To report a leak on the utility’s side, call 1-800-DIAL-DWP (1-800-342-5397) at any hour.

To check your own side, LADWP says to turn off all the water indoors and out and then watch the meter: if the leak indicator still moves, water is going somewhere. LADWP does not repair leaks on private property, but once an underground leak on the property has been fixed it will consider a billing adjustment, requested within 12 months with copies of the repair receipts, and its Harbor field investigations office handles San Pedro requests.

Additional Information

Does San Pedro have its own permit office?

Not a department of its own. Permits come from the City of Los Angeles Department of Building and Safety, LADBS, which runs one of its Development Services Centers here, at 638 South Beacon Street, with express permits and inspections among its services. Express permits, issued without plan check, cover replacing a water heater, replacing or adding plumbing fixtures, sewer repair or replacement, gas piping at low pressure serving no more than 10 outlets, and an added earthquake valve matching the size of the existing gas main. LADBS also says that replacing a gas water heater in a single-family house takes a plumbing permit unless the contractor holds its registration as a Certified Licensed Contractor. We can pull the permit for you, or you can pull it yourself if you meet LADBS’s conditions for an owner-builder. Its owner-builder declaration makes the owner the responsible party of record, and for plumbing work it limits the permit to a homeowner who has lived in the house for at least 12 months before the work is finished, to work done before the house is sold, and to two structures in any three years.

Does Los Angeles require an earthquake gas valve in San Pedro?

In several situations, yes, and the rule is the City of Los Angeles’s. Its municipal code calls for either a seismic gas shutoff valve or an excess flow shutoff valve on a building with gas piping before the building is sold, meaning before a sale agreement is entered into or, where there is an escrow, before it closes. The same requirement applies to an alteration or addition valued above an amount the code sets, to gas work that alters or replaces the gas meter, and to any building whose first building permit was issued on or after September 1, 1995. The valve must be certified by the Division of the State Architect and approved by the LADBS Mechanical Testing Laboratory, and it is installed under an LADBS permit and inspected. A licensed contractor does the installation; the code’s one exception is an owner LADBS has qualified to do plumbing in the single-family home the owner lives in. The valves we install are the motion type, and the piping behind them is covered on our San Pedro gas line page.

Call Rooter & Plumbing Masters in San Pedro

We are a veteran-owned company, and our office and crews speak Spanish as well as English. A sewer that gurgles, a drain that needs clearing more and more often, a water bill that keeps creeping up: any of them costs less to fix this month than after the pipe gives out.

Call (888) 855-6680 at any hour for a free estimate at your San Pedro home, building or business.