Is Fieldbrook, CA tap water safe?
The short answer
None of the 3 utilities serving Fieldbrook has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records.
Humboldt Bay MWD, which serves the most people here, has 1 result above the health goal. The worst: Lead at 1.6 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from Humboldt Bay MWD is moderately hard, 77 mg/L (4.5 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 Fieldbrook’s ZIP codes, from EPA’s estimates.
- Open report
Humboldt Bay MWD
California · serves 680 people · nearly all in Fieldbrook
1 result above the health goal. The worst: Lead at 1.6 ppb, above the health goal. Hardness: moderately hard, 77 mg/L (4.5 grains per gallon).
No health-based violations since 2016
- Open report
McKinleyville C.S.D.
California · serves 16,900 people · about 1,600 in Fieldbrook
1 result above the health goal. The worst: Lead at 1.8 ppb, above the health goal.
No health-based violations since 2016
- Open report
Fieldbrook Glendale C.S.D.
California · serves 1,845 people · about 150 in Fieldbrook
Nothing in its records is above a health goal.
No 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 Humboldt Bay MWD’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Brita Tahoe Pitcher with Elite Filter (OB60, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 13, 2026
Certified for: Lead
Brita Everyday Pitcher with Elite Filter (OB46, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
Certified for: Lead
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: Lead
Water testing near Fieldbrook
The 2 labs California certifies closest to Fieldbrook, 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 4 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 13 miles
Certified for bacteria
ZIP codes in Fieldbrook
Which ZIP codes are in Fieldbrook: 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 Fieldbrook
Towns nearby with a page of their own.
What to do next
- Read Humboldt Bay MWD’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for LeadRanked by certification and what they cost over five years.The best water filters for lead, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water