Covina plumbing guides
Straight answers to the questions Covina homeowners, renters and landlords ask before they call a plumber, each built from City of Covina, water supplier and state sources.
Call (626) 746-1970Request service
Written and fact-checked by John, editor, MBA in marketing
Updated against City, utility and state sources
Quick answer
Our guides cover Covina's six water suppliers and their hardness, which agency to call for water, sewer and gas, the City's permits and Handout #12 water heater rules, the owner-maintained sewer lateral, Level 2 watering days and leak deadlines, published plumbing cost ranges and how to check a California plumbing license.
- Guides
- 7
- City water hardness
- About 13.5 gpg (2025)
- Water heater rules
- Handout #12, January 2026
- Checked
- November 1, 2026
All homeowner guides
Each guide answers one question well and links to the services that fix the problem.
- Covina water suppliers and hardnessSix suppliers, tested hardness numbers and what they mean for heaters and fixtures.
- Who to call for water, sewer and gasYour water supplier, City Public Works, LACSD, SoCalGas and SCE: who handles what.
- Covina plumbing permitsHandouts #12 and #14, the in-person counter at 125 E College St, and inspections by email.
- Covina sewer lateral guideThe pipe the City says you own, roots included, and how to care for it.
- Covina water rules and leak deadlinesThe Level 2 shortage, Wednesday and Saturday watering and the 48-hour leak rule.
- Plumbing costs in CovinaPublished cost ranges for common jobs, with an estimator.
- How to check a plumber's licenseVerify a California C-36 license in under a minute.
Where to start
Start with the guide that matches your situation.
| Your situation | Read this first |
|---|---|
| You got a leak notice from the City | Water rules and leak deadlines |
| Your water heater is failing | Plumbing permits for Handout #12, then plumbing costs |
| Scale on fixtures, or you are thinking about a softener | Water suppliers and hardness |
| Sewage backing up, or roots in the line | Sewer lateral guide |
| Water at the meter, or a problem in the street | Who to call |
| Comparing bids from contractors | Check a plumber's license |
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Questions Covina homeowners ask
Are these guides free to use?
Yes. Every guide is free, and every fact links to its public source so you can check it yourself.
How often are the guides updated?
We review them when the City of Covina, the water suppliers or the state publish new information. Each page shows the date it was last checked.
Do the guides apply in Charter Oak?
Partly. Water, sewer and license advice applies, but Charter Oak is unincorporated Los Angeles County, so County permits apply instead of City of Covina permits. See our Charter Oak page.
Sources
Facts on this page come from these public sources, checked November 1, 2026.