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Camp Williams - Resort Water

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
80 people
Connections
69
Water source
Groundwater
Based in
Manhattan Beach, CA
County
Los Angeles
Owner
Private
Hardness
Very hard
The ZIP code it serves

91702

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

Fluoride, total trihalomethanes (TTHM), haloacetic acids (HAA5), nitrate, arsenic, chromium (total) and uranium: California’s own results, samples taken from April 1, 2021 to March 5, 2026, with EPA’s 2012 to 2019 file for earlier years.

Below EPA’s limits4

Fluoride

Forms or is added in treatment

Below EPA’s limits

2.1ppm

Highest yearly average, 2022 to 2025

Averaged by year, the highest was 2.1 ppm, in 2025, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 2.2 ppm. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 2.9 ppm, in 2012.

What handles it

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

2.7ppb

Highest yearly average, 2021 to 2025

2025 average: 1.8 ppb

Averaged by year, the highest was 2.7 ppb, in 2021, below EPA’s legal limit of 80 ppb. Its highest single sample was 4.3 ppb. In 2025, the latest year on file, its two samples averaged 1.8 ppb.

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

2.0ppb

Highest yearly average, 2022

Averaged by year, the highest was 2.0 ppb, in 2022, below EPA’s legal limit of 60 ppb. That is the only year on file.

What handles it

No certification claim covers this compound yet.

Nitrate

Comes from the source

Below EPA’s limits

0.29ppm

Highest sample; found in 1 of 11

2026: not found

The highest sample, in 2022, was 0.29 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, it wasn’t found in any of its two samples. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.42 ppm, in 2019.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
4 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Chromium (total)
  • Lead
  • Uranium

Hardness

Very hard, typically 230 mg/L (13.5 grains per gallon), across 2 sampling points, 2022 to 2025.

Hardness is calcium and magnesium. EPA sets no limit for it: it shows up as scale on fixtures and in water heaters, and as soap that won’t lather. USGS calls water above 60 mg/L moderately hard, above 120 hard and above 180 very hard.

Softeners compared at 13.5 grains per gallon, salt includedSoftener or salt-free conditioner?California water hardness, utility by utility

Violations since 2016

No health-based violations on file with EPA since 2016.

What this report can’t tell you

  • Everything else. Fluoride, total trihalomethanes (TTHM), haloacetic acids (HAA5), nitrate, arsenic, chromium (total) and uranium results here are California’s own from 2021 on, with EPA’s national file for 2012 to 2019. Camp Williams - Resort Water’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 April 1, 2021 to March 5, 2026.

Testing your own tap

Camp Williams - Resort Water’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 3 labs California certifies closest to the area Camp Williams - Resort Water serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Eurofins Pomona

    Pomona, CA · about 16 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity

    (626) 386-1100

  • Enviro-Chem, Inc.

    Pomona, CA · about 18 miles

    Certified for metals

    (909) 590-5905

  • Weck Laboratories, Inc.

    City of Industry, CA · about 19 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity

    (626) 336-2139

All 145 certified labs for California

Sources

PWSID CA1900529. Rebuilt from EPA data on Oct. 18, 2026.

Also in Los Angeles County

All California utilities

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