Emergencies
Burst pipes, backups and no hot water, answered 24/7. See our emergency plumber page.
ZIP 91722, 91723, 91724
Plumbing in cities near Covina
Our office is in Covina, at 601 E Edna Pl, and we also take calls from the five cities around it: West Covina, Glendora, Azusa, San Dimas and Baldwin Park. Each one has its own permit counter and its own mix of water suppliers, so this page lists both for every city.
Call (626) 746-1970Request service
Written and fact-checked by John, editor, MBA in marketing
Updated against City, utility and state sources
Quick answer
We are based in Covina and serve West Covina, Glendora, Azusa, San Dimas and Baldwin Park. Plumbing permits come from the city where the home is, not from Covina. Water suppliers differ by city and often by street, so the name on your bill decides who owns your meter and how hard your water is. Call (626) 746-1970 any hour.
- Our office
- 601 E Edna Pl, Covina
- Cities served
- West Covina, Glendora, Azusa, San Dimas, Baldwin Park
- Permits
- From the city where the home is
- Hardness
- About 12 grains in San Dimas (2025)
Cities near Covina that we serve
We are a Covina plumbing service, and we also work in the five cities that surround Covina: West Covina, Glendora, Azusa, San Dimas and Baldwin Park.
Our office is at 601 E Edna Pl, Covina, CA 91723. Most of our calls come from Covina itself, which is why most of this site is about Covina rules: the City's Handout #12 for water heaters, the in-person permit counter on E College St, and the City's six water suppliers. When we cross a city line, those rules change. Each neighboring city runs its own building department, and the water on one side of a street can come from a different company than the water on the other.
So for each city below we list three things, each from a page we opened ourselves: who supplies the water, which department issues plumbing permits, and any published water hardness. Where we could not open a current hardness report, we say so instead of guessing.
| City | Main water suppliers | Plumbing permits from | Published hardness |
|---|---|---|---|
| West Covina | Suburban Water Systems, Valencia Heights Water; also portions served by Azusa Light & Water and Valley County Water District | West Covina Building Division, City Hall Room 215 | Check your supplier's report |
| Glendora | Glendora Water (City); portions served by Golden State Water and Azusa Light & Water | Glendora Building Division, 116 E Foothill Blvd | Groundwater average 200 mg/L, about 11.7 grains (2023) |
| Azusa | Azusa Light & Water | Azusa Building Division | Groundwater average 141 mg/L, about 8.2 grains (2025) |
| San Dimas | Golden State Water, San Dimas system (Golden State says it serves portions of the city) | San Dimas, 245 E Bonita Ave | Average 205 mg/L, about 12 grains (2025) |
| Baldwin Park | San Gabriel Valley Water, Valley County Water District, Valley View Mutual | City of Baldwin Park, 14403 E Pacific Ave | Check your supplier's report |
Grains per gallon for Glendora and Azusa are our conversion of the mg/L figures in each report, at 17.1 mg/L per grain. Golden State's report gives grains directly. For comparison, the City of Covina reported an average of 230 mg/L, about 13.5 grains, in 2025. Our Covina water suppliers and hardness guide covers the Covina side in full.
West Covina plumbing: Suburban, Valencia Heights and City Hall Room 215
In West Covina, water usually comes from Suburban Water Systems or Valencia Heights Water Company, and plumbing permits come from the West Covina Building Division at City Hall, Room 215.
- Water
- The City lists Suburban Water Systems and Valencia Heights Water Company on its water utilities page; Azusa Light & Water and Valley County Water District also report serving portions of West Covina
- Suburban office
- 2235 E Garvey Ave N, open 8 a.m. to 4:30 p.m. Monday to Friday; daytime 626-543-2640; after-hours leaks (562) 464-1843
- Valencia Heights office
- 3009 E Virginia Ave; Monday to Thursday, 8 a.m. to 6 p.m., closed Fridays; 626-332-8935, with an after-hours emergency mailbox on the same number
- Permits
- Building Division, City Hall, 1444 W Garvey Ave S, second floor, Room 215
- Counter hours
- Monday to Thursday, 7:30 a.m. to 5:30 p.m.; payments by 4:30 p.m.; City Hall closed Fridays
- Online
- One Stop Building Permit Center portal, "Building Submittal" button
- Inspections
- Call (626) 939-8425, Monday to Thursday
West Covina shares a long border with Covina, and Suburban Water Systems serves customers on both sides. Suburban's Covina office is at 1325 N Grand Ave, while West Covina's page lists the Garvey Ave office. If your meter is leaking after hours and Suburban is on your bill, West Covina publishes the after-hours number above.
What is different from Covina
- An online portal. West Covina takes permit applications and plan check resubmittals online. Covina, by contrast, issues permits in person at its counter.
- A Friday gap. City Hall and Valencia Heights are both closed on Fridays, so plan inspections and utility questions for Monday to Thursday.
- Inspection by phone. West Covina books inspections by phone. Covina takes inspection requests by email.
We could not open a current Consumer Confidence Report for Suburban or Valencia Heights to confirm hardness, so we do not quote a number. Ask your supplier for its latest annual Consumer Confidence Report before you buy a water softener.
Glendora plumbing: City water and the Foothill Blvd counter
Glendora runs its own city water utility, Glendora Water, and plumbing permits come from the Glendora Building Division at 116 E Foothill Blvd.
- Water
- Glendora Water, 1051 E Sierra Madre Ave, 626-852-4838; Golden State Water and Azusa Light & Water also report serving portions of Glendora
- Water sources
- Main San Gabriel Basin groundwater, filtered surface water from Covina Irrigating Company, and filtered imported water from the Metropolitan Water District
- Disinfection
- Chlorine for groundwater and CIC water; chloramines for MWD water
- Permits
- Building Division, 116 E Foothill Blvd; (626) 914-8222; Monday to Friday, 8 a.m. to 5 p.m.
- Online
- Civic Access portal for permits; eTrakit for older permit and property records
- Inspections
- The City says it strives to provide next-day inspections
| Source | Average hardness | Range |
|---|---|---|
| Groundwater | 200 mg/L, about 11.7 grains per gallon | 120 to 360 mg/L |
| Treated surface water | 98 mg/L, about 5.7 grains per gallon | 77 to 120 mg/L |
The 2023 report is the most recent Glendora report we could open in full. The City posts newer reports online; check the current one for your home. The wide spread matters for plumbing. On days your tap water is mostly groundwater, it is close to Covina's level. On days it is mostly surface water, it is much softer. A water heater sees the average over years, and that is enough to leave scale.
What is different from Covina
- Five days a week. Glendora's Building Division is open Monday to Friday. Covina's counter is open Monday to Thursday.
- Online permits. Glendora runs permits through Civic Access.
- Its own water department. Like Covina, Glendora runs a city water utility, with its own rates and its own mix of sources.
Glendora borders unincorporated Charter Oak to the south. If your Glendora-sounding address turns out to be County land, see our Charter Oak page.
Azusa plumbing: Azusa Light & Water and permits by email
Azusa homes get water from Azusa Light & Water, and the Azusa Building Division takes over-the-counter permit applications by email.
- Water
- Azusa Light & Water, 729 N Azusa Ave; (626) 812-5225
- Service area
- The City of Azusa plus portions of Glendora, Covina, West Covina, Irwindale and unincorporated LA County
- Size
- About 23,394 service connections and an estimated 120,000 people
- Sources
- San Gabriel Canyon surface water treated at the Joseph F. Hsu Water Filtration Plant, plus groundwater wells
- Permits
- Azusa Building Division, (626) 812-5234; applications emailed to buildingpermits@azusaca.gov or brought to the counter
- Service line inventory
- Published online by Azusa Light & Water
| Measure | Groundwater | Surface water |
|---|---|---|
| Total hardness | Average 141 mg/L (about 8.2 grains), range 99 to 260 mg/L | 100 mg/L (about 5.8 grains) |
| Total dissolved solids | Average 267 mg/L, range 210 to 460 mg/L | 230 mg/L |
| Sodium | Average 27 mg/L, range 23 to 31 mg/L | 40 mg/L |
Azusa's water is softer than Covina's on average. Azusa Light & Water is also one of the six suppliers on Covina's own purveyor list, so some Covina homes get the same water.
How Azusa's email permit works
Fill out the application
Use the City's Building Permit Application.
Email it
Send it to the Building Division address above, as a PDF.
Staff check it
The City confirms the submittal is complete.
Pay the invoice
You get an invoice and a credit card authorization form by email and send them back.
Receive the permit
Once processed, the permit is sent to you.
Jobs that need plan check follow a similar path, and the City notes the review clock does not start until every document is in and fees are paid. Covina has no online or email submission; its permits are issued at the counter.
San Dimas plumbing: Golden State Water and the Bonita Ave office
Golden State Water serves San Dimas through its San Dimas system, which reported an average hardness of about 12 grains per gallon in 2025, and plumbing permits come from the City at 245 E Bonita Ave.
- Water
- Golden State Water, San Dimas system; toll-free 1-800-999-4033, local 909-394-2272
- Service area
- Golden State says this area covers portions of Charter Oak, Covina, Glendora, La Verne, San Dimas and Walnut
- Sources
- Main San Gabriel Basin groundwater, local surface water from Covina Valley Water Company, and imported Colorado River and State Water Project water
- Hardness
- Average 205 mg/L, about 12 grains per gallon; range 5 to 18 grains (2025 data)
- Service lines
- Golden State says the system has no lead or galvanized service lines that require replacement, including customer-owned service lines
- Permits
- City of San Dimas, 245 E Bonita Ave; 909-394-6260
The City of San Dimas publishes a handout called Permits Needed. Its plumbing items include a water heater change-out and the installation or repair of water, sewer or gas lines. It also says a plumbing, electrical or mechanical permit may be required for any addition or change to a building's existing system. In other words, a heater swap in San Dimas is permit work, just as it is in Covina.
Golden State Water also serves parts of Covina and Charter Oak from this same system, so many of our Covina customers have the same 12-grain water as San Dimas. At that level, tank heaters build sediment and tankless units need regular descaling. See our tankless water heater page.
Baldwin Park plumbing: three water suppliers and City Hall on Pacific Ave
Baldwin Park lists three water suppliers, San Gabriel Valley Water Company, Valley County Water District and Valley View Mutual Water Company, and the City issues plumbing permits from City Hall at 14403 E Pacific Ave.
- San Gabriel Valley Water Company
- 11142 Garvey Ave, El Monte; 626-448-6183
- Valley County Water District
- 5121 Lante St, Baldwin Park; 626-338-7301
- Valley View Mutual Water Company
- 13730 Los Angeles St, Baldwin Park; 626-960-2759
- Permits
- City of Baldwin Park, 14403 E Pacific Ave; main line (626) 960-4011
- Hours
- Monday to Thursday, 7:30 a.m. to 6 p.m. (211 LA listing)
- Gas
- SoCalGas, residential 1-800-427-2200, available 24 hours a day
Valley County Water District has a long local history. The Association of California Water Agencies reports that it was founded in 1926 as the Baldwin Park County Water District, serves about 10 square miles including portions of Baldwin Park, Irwindale, West Covina and Azusa, reaches nearly 70,000 residents, and draws mainly on the Main San Gabriel Groundwater Basin.
We could not open a current Consumer Confidence Report for any of Baldwin Park's three suppliers, so we do not quote a hardness number. Ask your supplier for its latest Consumer Confidence Report.
What is different from Covina
- Three suppliers inside one city. Like Covina, Baldwin Park homes on nearby streets can have different water companies.
- Longer counter days. The listing shows City Hall open until 6 p.m. Monday to Thursday.
- A supplier based out of town. San Gabriel Valley Water Company's office is in El Monte, not Baldwin Park.
Why your permit comes from your city, not ours
A plumbing permit is issued by the city or county where the property is, so a Covina plumber working in West Covina pulls a West Covina permit.
This trips people up. Our office is in Covina, but Covina's Building and Safety office has no say over a water heater in Glendora or a repipe in Baldwin Park. The rules that apply are the ones at the property. Each city on this page issues its own permits, with its own counter, hours, forms and inspection process.
| City | How you apply | Days open | Inspections |
|---|---|---|---|
| Covina | In person at 125 E College St; most issued over the counter | Monday to Thursday | Requested by email |
| West Covina | Online portal or City Hall Room 215 | Monday to Thursday | By phone, (626) 939-8425 |
| Glendora | Civic Access portal or 116 E Foothill Blvd | Monday to Friday | Next-day goal |
| Azusa | Email or counter | Ask the Building Division | Ask the Building Division |
| San Dimas | City at 245 E Bonita Ave | Ask the City | Ask the City |
| Baldwin Park | City Hall, 14403 E Pacific Ave | Monday to Thursday | Ask the City |
| Unincorporated areas | LA County Public Works through EPIC-LA | Monday to Friday | Through the County office |
Our contractors pull permits from the right agency when the work requires them. For the Covina process in detail, see our Covina plumbing permits guide. To check that any plumber is licensed before work starts, see how to check a plumber's license.
Hard water across the Covina area
Published averages around Covina run from about 5.7 grains per gallon for Glendora's treated surface water up to about 13.5 grains for the City of Covina, which its own report calls very hard.
| Supplier | Average | About grains per gallon | Data year |
|---|---|---|---|
| City of Covina Water | 230 mg/L | 13.5 | 2025 |
| Golden State Water, San Dimas system | 205 mg/L | 12 | 2025 |
| Glendora Water, groundwater | 200 mg/L | 11.7 | 2023 |
| Azusa Light & Water, groundwater | 141 mg/L | 8.2 | 2025 |
| Azusa Light & Water, surface water | 100 mg/L | 5.8 | 2025 |
| Glendora Water, treated surface water | 98 mg/L | 5.7 | 2023 |
Hardness is not a safety issue, but it shortens the life of water heaters, clogs aerators and makes toilet fill valves stick. The DOE says tank water heaters typically last 10 to 15 years; in hard water, the sediment that settles in the tank is one more reason to flush it on schedule. When you move between these cities, your old softener settings may not fit the new water.
Angi's published range for a tank water heater replacement is $600 to $2,500 (2025), and tankless installs run $1,404 to $3,901 (2026). These are national estimates, not quotes. Call (626) 746-1970 for an exact quote. See our water heater repair and replacement page.
What we do in the cities around Covina
We offer the same services in the nearby cities that we offer in Covina, from drain cleaning to repipes, with a written price before work starts.
Drains and laterals
Clogs cleared, laterals put on camera. See drain cleaning and sewer lateral repair.
Leaks
Hidden, slab and yard leaks found before anyone digs. See leak detection.
Water heaters
Tank and tankless, permitted in the city where the home is.
Repipes
Old galvanized pipe replaced with PEX or copper. See repiping.
Gas lines
Leak repair and new lines. See our gas line plumber page.
HomeAdvisor's published range for clearing a single clog is $147 to $345 (2025), and This Old House lists a typical Covina plumbing job at $102 to $339. Call (626) 746-1970 for an exact quote. Work is performed by independent CSLB-licensed C-36 plumbing contractors, with an honest arrival window.
Who to call in the cities near Covina
Call a plumber for anything inside the house and in your lateral, your water supplier for the meter, and the city building department for permits.
| Problem | Who handles it | Number |
|---|---|---|
| Leak, clog, water heater or lateral | A licensed plumber | (626) 746-1970 |
| Leak at the meter or in the street | The water supplier on your bill | See each city above |
| Permit questions | The building department of the city where the home is | See each city above |
| Gas smell | SoCalGas, called from outside | 1-800-427-2200; 911 if there is danger |
| Downed power line | Call 911 | 911 |
| Digging in the yard | Call 811 first | 811, at least two business days ahead |
Inside Covina, our area pages go street by street: Downtown Covina, Covina 91722, Covina 91723 and Covina 91724. Our who to call guide lists every Covina agency.
Water where it shouldn't be? Call now.
A real person answers 24 hours a day. You get an honest arrival window and a written price before any work starts.
Questions Covina homeowners ask
Do you serve West Covina, Glendora and San Dimas?
Yes. Our office is in Covina, at 601 E Edna Pl, and we also serve West Covina, Glendora, Azusa, San Dimas and Baldwin Park. Phones are answered 24/7 at (626) 746-1970, and you get a written price before work starts.
Who supplies water in West Covina?
Mostly Suburban Water Systems and Valencia Heights Water Company, which the City lists on its water utilities page. Azusa Light & Water and Valley County Water District also report serving portions of West Covina. The name on your bill is the sure answer.
Where do I get a plumbing permit in West Covina?
At the West Covina Building Division, City Hall, 1444 W Garvey Ave S, second floor, Room 215, open Monday to Thursday. You can also apply through the City's online One Stop Building Permit Center portal. Inspections are booked by phone.
How hard is the water in San Dimas?
Hard. Golden State Water's San Dimas system reported an average of 205 mg/L, about 12 grains per gallon, in 2025, with a range of about 5 to 18 grains. Golden State also serves parts of Covina and Charter Oak from the same system.
Is Azusa water softer than Covina water?
On average, yes. Azusa Light & Water's 2025 report shows groundwater averaging 141 mg/L and surface water at 100 mg/L. The City of Covina reported 230 mg/L, about 13.5 grains per gallon, in 2025.
Who issues plumbing permits in Glendora?
The Glendora Building Division at 116 E Foothill Blvd, open Monday to Friday, 8 a.m. to 5 p.m. The City uses its Civic Access portal for permits and says it strives for next-day inspections.
What water companies serve Baldwin Park?
The City of Baldwin Park lists three: San Gabriel Valley Water Company, Valley County Water District and Valley View Mutual Water Company. Check your bill to see which one serves your home.
Can a Covina plumber pull a permit in another city?
Yes, but it must come from the city where the home is. A water heater in San Dimas needs a San Dimas permit, not a Covina one. Our contractors pull permits from the right agency when the work requires them.
Sources
Facts on this page come from these public sources, checked November 1, 2026.
- City of Covina: water purveyors servicing Covina
- City of Covina 2025 Consumer Confidence Report
- City of West Covina: water utilities emergency numbers
- City of West Covina: permits, plan check and inspections
- City of West Covina: contact Community Development
- City of Glendora: Consumer Confidence Reports
- City of Glendora 2023 Consumer Confidence Report
- City of Glendora: Building and Safety Division
- Azusa Light & Water 2025 Consumer Confidence Report
- City of Azusa: online building permit instructions
- Golden State Water: San Dimas service area
- Golden State Water: San Dimas system water quality report
- City of San Dimas: Permits Needed handout
- City of Baldwin Park: utilities
- 211 LA: City of Baldwin Park plumbing permits
- ACWA: Valley County Water District celebrates 100 years (Feb. 2026)
- Charter Oak Unified School District (Wikipedia)
- EPIC-LA general permit guide
- Covina, California (Wikipedia)
- SoCalGas emergency information
- This Old House: Covina plumbing costs
- HomeAdvisor: drain and main line clearing costs
- Angi: water heater installation costs
- Angi: tankless water heater costs
- CSLB: Check a License