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Chester Park Water System

What EPA’s and Utah’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
152 people
Connections
47
Water source
Groundwater
Based in
Lindon, UT
County
Sanpete
Owner
Private
The ZIP code it serves

84623

The short answer

1 result is above the limit’s level with no violation recorded, and 1 more is above the health goal. The worst: Arsenic, above the limit’s level, no violation. 2 health-based violations since 2016.

What handles it

What was found

Arsenic, uranium, fluoride, nitrate and chromium (total): Utah’s own results, samples taken from Jan. 9, 2020 to Sept. 12, 2026, with EPA’s 2012 to 2019 file for earlier years.

Above the limit’s level, no violation recorded1

Arsenic

Comes from the source

Above the limit’s level, no violation

12ppb

Highest yearly average, 2020 to 2026

2026: not found

Averaged by year, the highest was 12 ppb, in 2020, above EPA’s legal limit of 10 ppb. Its highest single sample was 96.7 ppb. In 2026, the latest year on file, it wasn’t found in any of its five samples. EPA judges this limit on running averages at each sampling point, and recorded no violation for arsenic at this utility since 2020. Results like these with no violation often include water sampled before treatment or blending; the utility’s annual report says what reaches the tap. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 26.4 ppb, in 2015, and EPA recorded a violation in 2012.

What handles it

  • NSF/ANSI 58 look for “Arsenic (Pentavalent)<=50 ppb Reduction”
  • NSF/ANSI 53 look for “Arsenic (Pentavalent)<=50 ppb Reduction”

Above the health goal1

Uranium

Comes from the source

Above the health goal

6.5ppb

Highest yearly average, 2026

Averaged by year, the highest was 6.5 ppb, in 2026: below EPA’s legal limit of 30 ppb, but above its health goal of zero. Its highest single sample was 9.0 ppb. That is the only year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 7.8 ppb, in 2014.

What handles it

Below EPA’s limits2

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.37ppm

Highest yearly average, 2022 to 2025

2025, one sample: 0.27 ppm

Averaged by year, the highest was 0.37 ppm, in 2022, below EPA’s legal limit of 4.0 ppm. In 2025, the latest year on file, its one sample was 0.27 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.4 ppm, in 2013.

What handles it

Nitrate

Comes from the source

Below EPA’s limits

0.77ppm

Highest sample; found in 3 of 6

2025, one sample: 0.11 ppm

The highest sample, in 2024, was 0.77 ppm, below EPA’s legal limit of 10 ppm. In 2025, the latest year on file, its one sample was 0.11 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.2 ppm, in 2012.

What handles it

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

What handles it

A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”

  • NSF/ANSI 53

    Claim: Arsenic (Pentavalent)<=50 ppb Reduction

    For: Arsenic

    Other certifiers’ wording: Arsenic (III) (50 ppb influent level)

  • NSF/ANSI 58

    Claims: Arsenic (Pentavalent)<=50 ppb Reduction, Uranium

    For: Arsenic, Uranium

    Other certifiers’ wording: Arsenic (Pentavalent)<=300 ppb Reduction; Arsenic (V) (300 ppb influent level)

At the tap, or for the whole house?

These come with the water itself, so a whole-house system certified for the same claims treats every tap and shower. A filter at the tap treats drinking water for much less. How whole-house systems compare.

Filters with those claims on a certifier’s listing

Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

Compare five-year costs

The best reverse osmosis systems, ranked

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Revised Total Coliform RuleE. coli was confirmed in the water system.EPA: Maximum Contaminant Level Violation, E. coli (RTCR)Oct. 1, 2018 to Oct. 31, 2018—Resolved
Groundwater RuleA significant problem found in a state inspection was not fixed on time.EPA: Failure To Address DeficiencyDec. 23, 2017—Resolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 4 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Arsenic, uranium, fluoride, nitrate and chromium (total) results here are Utah’s own from 2020 on, with EPA’s national file for 2012 to 2019. Chester Park Water System’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; Utah’s results run from Jan. 9, 2020 to Sept. 12, 2026.

Testing your own tap

Chester Park Water System’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 Utah certifies.

The 3 labs Utah certifies closest to the area Chester Park Water System serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • SE Utah District Health Department Laboratory

    Price, UT · about 43 miles

    Certified for bacteria

    (435) 637-3671

  • Provo Water Resources Laboratory

    Provo, UT · about 53 miles

    Certified for bacteria

    (801) 852-6796

  • Central Utah Public Health Laboratory

    Richfield, UT · about 54 miles

    Certified for bacteria, nitrate

    (435) 896-5451

All 60 certified labs for Utah

Sources

PWSID UTAH20060. Rebuilt from EPA data on Oct. 18, 2026.

Also in Sanpete County

All Utah utilities

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