Is Avenal, CA tap water safe?
The short answer
2 of the 2 utilities serving Avenal have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: City of Avenal and Kettleman City CSD.
City of Avenal, which serves the most people here, has 1 result above the legal limit and 2 results above the health goal. The worst: Total trihalomethanes (TTHM) at 70.7 ppb, above the legal limit.
The water from City of Avenal is moderately hard, typically 99 mg/L (5.8 grains per gallon). How California’s water compares.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Avenal’s ZIP codes, from EPA’s estimates.
- Open report
City of Avenal
California · serves 13,696 people · about 1,500 in Avenal
1 result above the legal limit and 2 results above the health goal. The worst: Total trihalomethanes (TTHM) at 70.7 ppb, above the legal limit. Hardness: moderately hard, typically 99 mg/L (5.8 grains per gallon).
9 health-based violations since 2016
- Open report
Kettleman City CSD
California · serves 1,242 people · under 100 in Avenal
1 result above the legal limit and 2 results above the health goal. The worst: Total trihalomethanes (TTHM) at 106 ppb, above the legal limit. Hardness: moderately hard, typically 90 mg/L (5.2 grains per gallon).
22 health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in City of Avenal’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Arsenic
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Arsenic
Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Total trihalomethanes (TTHM), Arsenic
Water testing near Avenal
The 3 labs California certifies closest to Avenal, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Sierra Dairy Laboratory
Tulare, CA · about 42 miles
Certified for bacteria
Fruit Growers Laboratory, Inc.
Visalia, CA · about 44 miles
Certified for bacteria
Moore Twining Associates, Inc.
Fresno, CA · about 55 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, radioactivity
Which ZIP codes are in Avenal: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: California State Water Resources Control Board, ELAP accredited laboratories and their fields of accreditation; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Avenal
Other towns in Kings County with a page of their own.
What to do next
- Read City of Avenal’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About Total trihalomethanes (TTHM)What it does to health, where it comes from, and the certification claim that addresses it.About Total trihalomethanes (TTHM)
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water