Is Klamath, CA tap water safe?
The short answer
3 of the 3 utilities serving Klamath have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records: Klamath C.S.D., Hunter Valley CSD and Redwood Park C.S.D..
Klamath C.S.D., which serves the most people here, has 1 result above the action level and 1 result above the health goal. The worst: Copper at 1.7 ppm, above the action level.
The water from Klamath C.S.D. is soft, typically 38 mg/L (2.2 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 Klamath’s ZIP codes, from EPA’s estimates.
- Open report
Klamath C.S.D.
California · serves 240 people · under 100 in Klamath
1 result above the action level and 1 result above the health goal. The worst: Copper at 1.7 ppm, above the action level. Hardness: soft, typically 38 mg/L (2.2 grains per gallon).
1 health-based violation since 2016
- Open report
Hunter Valley CSD
California · serves 87 people · under 100 in Klamath
1 result above the health goal. The worst: Lead at 1.8 ppb, above the health goal. Hardness: soft, 21 mg/L (1.2 grains per gallon).
1 health-based violation since 2016
- Open report
Redwood Park C.S.D.
California · serves 200 people · under 100 in Klamath
1 result above the action level and 1 result above the health goal. The worst: Copper at 1.7 ppm, above the action level.
2 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 Klamath C.S.D.’s water, which serves the most people here. Another utility’s report names what handles its own results.
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PUR PLUS 11-Cup Pitcher (PPT111W)
Pitcher
- NSF listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
Certified for: Copper, Lead
Culligan 10-Cup Pitcher with ZeroWater Technology (ZEROP10)
Pitcher
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Copper, Lead
LifeStraw Home 7-Cup Glass Water Filter Pitcher
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Copper, Lead
Water testing near Klamath
The 2 labs California certifies closest to Klamath, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Microbac Laboratories, Inc. - Arcata
Arcata, CA · about 48 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
Humboldt County Public Health Laboratory
Eureka, CA · about 55 miles
Certified for bacteria
ZIP codes in Klamath
Which ZIP codes are in Klamath: 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 Klamath
Towns nearby with a page of their own.
What to do next
- Read Klamath C.S.D.’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About CopperWhat it does to health, where it comes from, and the certification claim that addresses it.About Copper
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water