Is Fields Landing, CA tap water safe?
The short answer
Neither of the 2 utilities serving Fields Landing 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 C.S.D., which serves the most people here, has 2 results above the health goal. The worst: Arsenic at 4.0 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from Humboldt C.S.D. is soft to moderately hard depending on the source, 55 to 62 mg/L (3.2 to 3.6 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 Fields Landing’s ZIP codes, from EPA’s estimates.
- Open report
Humboldt C.S.D.
California · serves 19,775 people · about 140 in Fields Landing
2 results above the health goal. The worst: Arsenic at 4.0 ppb, above the health goal. Hardness: soft to moderately hard depending on the source, 55 to 62 mg/L (3.2 to 3.6 grains per gallon).
No health-based violations since 2016
- Open report
Humboldt Bay MWD
California · serves 680 people · about 140 in Fields Landing
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
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Humboldt 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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Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Arsenic, Lead
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: Arsenic, Lead
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: Arsenic, Lead
Water testing near Fields Landing
The 2 labs California certifies closest to Fields Landing, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Humboldt County Public Health Laboratory
Eureka, CA · about 6 miles
Certified for bacteria
Microbac Laboratories, Inc. - Arcata
Arcata, CA · about 15 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
ZIP codes in Fields Landing
Which ZIP codes are in Fields Landing: 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 Fields Landing
Other towns in Humboldt County with a page of their own.
What to do next
- Read Humboldt C.S.D.’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for ArsenicRanked by certification and what they cost over five years.The best reverse osmosis systems, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water