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Fieldbrook Glendale C.S.D.

What EPA’s and California’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.

Serves
1,845 people
Connections
550
Water source
Groundwater bought from another system
Based in
McKinleyville, CA
County
Humboldt
Owner
Local government
The ZIP code it serves

95519

The short answer

Nothing in EPA’s and California’s records for this utility is above a health goal. That covers nitrate, arsenic and other regulated chemicals, plus lead and copper, not everything. No health-based violations on file since 2016.

What was found

Total trihalomethanes (TTHM) and haloacetic acids (HAA5): California’s own results, samples taken from Aug. 20, 2024 to Aug. 1, 2025, with EPA’s 2012 to 2019 file for earlier years.

Below EPA’s limits2

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

8.8ppb

Highest yearly average, 2024 to 2025

2025, one sample: 4.6 ppb

Averaged by year, the highest was 8.8 ppb, in 2024, below EPA’s legal limit of 80 ppb. In 2025, the latest year on file, its one sample was 4.6 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 13 ppb, in 2016.

What handles it

  • NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
  • NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

6.5ppb

Highest yearly average, 2024 to 2025

Averaged by year, the highest was 6.5 ppb, in 2025, below EPA’s legal limit of 60 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 4.7 ppb, in 2016.

What handles it

No certification claim covers this compound yet.

One compound tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Lead

Violations since 2016

No health-based violations on file with EPA since 2016. There is 1 monitoring or reporting violation: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Total trihalomethanes (TTHM) and haloacetic acids (HAA5) results here are California’s own from 2024 on, with EPA’s national file for 2012 to 2019. Fieldbrook Glendale C.S.D.’s own annual report, which it must send you every year, has the contaminants this page does not show.

  • Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.

  • What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.

  • Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; California’s results run from Aug. 20, 2024 to Aug. 1, 2025.

Testing your own tap

Fieldbrook Glendale C.S.D.’s results are for the water it sends out. What your own service line, solder and fixtures add shows up only in a test of your tap, by a lab California certifies.

The 2 labs California certifies closest to the area Fieldbrook Glendale C.S.D. serves, 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

    (707) 822-4649

  • Humboldt County Public Health Laboratory

    Eureka, CA · about 13 miles

    Certified for bacteria

    (707) 268-2179

All 145 certified labs for California

Sources

PWSID CA1210020. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Humboldt County

All California utilities

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