Plumber in Covina, CA: Whose Water, Whose Permit and Whose City Limits

Five providers, one city: whose bill is yours?

The City of Covina's Water Division page says that not all residents receive water from the city. It names four other purveyors: Azusa Light and Water, Golden State Water, Valencia Heights Water Company and Suburban Water Company. The city's own supply comes primarily from local sources, and city documents name two different companies for it.

Because the documents disagree, the reliable answer is on your bill. It names who supplies your water and who to call when the water will not shut off.

1. Read the provider's name off your last bill.
2. Close the home shutoff valve where the line enters the house, if water is running.
3. Call the provider if the valve fails, and a plumber for the repair.

The line past the meter belongs to you. See burst pipe shutoff and records for the order of steps.

The city's water heater handout, line by line

Covina's 2026 water heater handout says a plumbing permit is required for all water heater replacements or new installations within the city. It requires a seismic bracing system and says the heater shall be anchored with a minimum 1 1/4 inch wide band of 16 gauge steel.

The handout also asks for a plot or site plan and for the installation instructions to be kept on site. A general plumbing handout adds that a permit is required to install, alter, repair, replace or remodel plumbing systems.

• Ask the installer to name the bracing on the quote.
• Ask whether the site plan is included in the permit cost.
• Ask when the inspection will happen.

Our tank install quote page lists the other items a quote should name.

Hardness: two sources, two numbers

The city's 2025 water quality report lists hardness of about 92 mg/L for one source and 230 mg/L for another. The first is moderately hard on the U.S. Geological Survey scale and the second is very hard. The report does not tell you which reaches your street.

That gap is exactly why a softener should be sized from your provider's number. See report-based softener sizing before buying. Ask your supplier for the figure that applies to your address.

Sewer: house connections are yours

The City of Covina's Public Works page says homeowners are responsible for maintaining house connections to the sanitary sewer system. A city tree-roots handout says homeowners must maintain the lateral from the home to the main sewer line, typically in the street.

So a lateral failure is a repair you arrange. When roots are the cause, scouring roots from a pipe is often the first step, followed by a camera. The city's Building page notes that some projects may need approval from the Los Angeles County Sanitation Districts.

A Covina address that is not in Covina

The city says properties with Covina mailing addresses in ZIP codes 91722, 91723 and 91724 may not be within city limits. A county parcel with a Covina address pulls its permits from the County, not the city.

Before you apply for a permit, confirm whether the parcel is in the city. The city's building counter is at (626) 384-5460. When you call (833) 571-0120, give the street address and the plumber will confirm service for your block.

Questions to ask the plumber

• Which provider do you contact first if the shutoff fails?
• Does the quote include the permit and the bracing?
• Is the parcel inside Covina city limits?

Common calls from Covina homes

• Water on the floor: drying a flooded room.
• A spreading stain on a ceiling: finding a hidden leak.
• A drain that backs up: clearing a stubborn drain.
• A running toilet: fixing a running toilet.

When a Covina drain problem is the lateral and not the fixture

One slow sink is usually a local clog. Several slow drains at once point toward the shared line that leaves the house, which is the lateral.

• Run the kitchen sink, then flush the lowest toilet. Gurgling or backing up in the lowest fixture suggests the main line.
• Watch the cleanout cap outside, if you have one, but do not open it while water is backing up.
• Ask for a camera view, not just a cable pass, when the problem returns.

A cable can clear the symptom and leave the cause. Footage shows whether the pipe is cracked, offset or full of roots, and it lets you decide on the repair with real information.

Covina on the map

Boundaries between cities, unincorporated pockets and water districts sit close together here, so give the full street address when you call.