Covina plumbing service areas
We cover every part of Covina, ZIP codes 91722, 91723 and 91724, plus unincorporated Charter Oak and nearby cities. Each area guide covers its housing, landmarks, water supplier and permit rules.
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Written and fact-checked by John, editor, MBA in marketing
Updated against City, utility and state sources
Quick answer
We serve all of Covina: Downtown along Citrus Avenue, ZIP codes 91722, 91723 and 91724, unincorporated Charter Oak, and nearby cities including West Covina, Glendora, Azusa, San Dimas and Baldwin Park. Covina is in Los Angeles County, and ZIP areas extend past city limits, so permit rules depend on the exact address.
- ZIP codes
- 91722, 91723, 91724
- Size
- About 7 square miles
- Built before 1970
- About two-thirds of homes
- Population
- 51,268 (2020 Census)
Choose your part of Covina
Every area guide is written for that part of town. ZIP code areas are postal zones, not city limits, so some 91722 and 91724 addresses sit outside the City.
- Downtown CovinaZIP 91723Citrus Avenue, Heritage Plaza and the oldest blocks in town.
- Covina 91722ZIP 91722Much of residential Covina, plus blocks past the city line.
- Covina 91723ZIP 91723Downtown, City Hall, the Metrolink station and the hospital area.
- Covina 91724ZIP 91724The east side of Covina toward Charter Oak and San Dimas.
- Charter OakZIP 91724Unincorporated community next to Covina, under County rules.
- Nearby citiesNeighborsWest Covina, Glendora, Azusa, San Dimas and Baldwin Park.
What changes from one area to the next
Three things change across Covina: who supplies your water, whether the City or the County issues your permit, and how old the house is.
| Area | What to know first |
|---|---|
| Downtown Covina | The oldest blocks, around Citrus Avenue, Heritage Plaza and the 1920 Covina Theater; older pipe and laterals; City permits |
| Covina 91722 | Much of residential Covina; the ZIP extends past the city line, so confirm City or County and check the supplier on the bill |
| Covina 91723 | Downtown, City Hall, the Metrolink station at 600 N Citrus Ave and Emanate Health Inter-Community Hospital |
| Covina 91724 | The east side toward Charter Oak and San Dimas; the ZIP also covers Charter Oak, so permit rules vary by address |
| Charter Oak | Unincorporated Los Angeles County, not part of the City; County rules and permits apply |
| Nearby cities | West Covina, Glendora, Azusa, San Dimas and Baldwin Park each have their own building department and rules |
Across the whole city, the same few facts shape most jobs. The City's Housing Element says about two-thirds of Covina homes were built before 1970 and about 58 percent are single-family detached houses. City of Covina water averages about 13.5 grains per gallon of hardness, which is very hard. The owner maintains the sewer lateral to the public main, including roots. And six different water suppliers serve parts of Covina, so the name on your bill decides who handles a leak at the meter.
Not sure who handles the street side? Read who to call for water, sewer and gas and the Covina sewer lateral guide.
Water where it shouldn't be? Call now.
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Questions Covina homeowners ask
Do you serve all of Covina?
Yes. We cover all of 91722, 91723 and 91724, from Downtown along Citrus Avenue to the east side near Charter Oak, for homes, rentals and businesses alike.
Is Charter Oak part of Covina?
No. Charter Oak is an unincorporated community in Los Angeles County. It shares the 91724 ZIP code with part of Covina, but County rules and permits apply there, not City of Covina permits.
Who supplies water in Covina?
Six suppliers serve parts of Covina: the City of Covina Water Division, Suburban Water Systems, Golden State Water, Valencia Heights Water Company, Azusa Light & Water and Glendora Water. Your bill names yours. See our water suppliers guide.
Are Covina homes old enough to need plumbing updates?
Many are. The City's Housing Element says about two-thirds of homes were built before 1970, so original galvanized pipe, old shutoffs and aging sewer laterals are common.
Sources
Facts on this page come from these public sources, checked November 1, 2026.
- City of Covina 6th cycle Housing Element
- City of Covina: water purveyors servicing Covina
- City of Covina 2025 Consumer Confidence Report
- U.S. Census Bureau QuickFacts: Covina city, California
- Zip-Codes.com: Covina, CA ZIP codes
- Metrolink: Covina station
- City of Covina: Covina Theater
- Wikipedia: Covina, California