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Uintah Highlands Improvement District

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
2,485 people
Connections
986
Water source
Surface water bought from another system
Based in
Ogden, UT
County
Weber
Owner
Local government
The ZIP code it serves

84403

The short answer

1 result is above EPA’s legal limit, and 2 more are above the health goal. The worst: Total trihalomethanes (TTHM), above the legal limit. 2 health-based violations since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2007 to 2024.

Arsenic, fluoride, nitrate and chromium (total): Utah’s own results, samples taken from Dec. 10, 2020 to Aug. 21, 2025, with EPA’s 2012 to 2019 file for earlier years.

Total trihalomethanes (TTHM): EPA’s violation records from 2020 on, with EPA’s 2012 to 2019 file for earlier years.

Haloacetic acids (HAA5): EPA’s compliance monitoring file, samples taken from Nov. 20, 2012 to Aug. 15, 2019. Newer results are in the utility’s annual water quality report.

Above the legal limit1

Total trihalomethanes (TTHM)

Forms or is added in treatment

Above the legal limit

91.4ppb

Limit violation, 2023

EPA recorded a violation of the legal limit for total trihalomethanes (TTHM) at this utility in 2023. The highest measured level, for July 1, 2023 to Sept. 30, 2023, was an average of 91.4 ppb, above EPA’s legal limit of 80 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 72.8 ppb, in 2015.

What handles it

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

Above the health goal2

Lead

Comes from pipes, often your own

Above the health goal

6.7ppb

90th percentile, 2022 to 2024

In the latest period, 9 in 10 homes sampled were at or below 6.7 ppb, below EPA’s action level of 15 ppb. The action level drops to 10 ppb on Nov. 1, 2027. EPA’s health goal for lead is zero.

What handles it

Arsenic

Comes from the source

Above the health goal

0.43ppb

Highest yearly average, 2022 to 2025

2025: not found

Averaged by year, the highest was 0.43 ppb, in 2022: below EPA’s legal limit of 10 ppb, but above its health goal of zero. Its highest single sample was 0.7 ppb. In 2025, the latest year on file, it wasn’t found in any of its three samples.

What handles it

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

Below EPA’s limits3

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

24.3ppb

Highest yearly average, 2012 to 2019

2019, one sample: 22.8 ppb

Averaged by year, the highest was 24.3 ppb, in 2012, below EPA’s legal limit of 60 ppb. Its highest single sample was 38.8 ppb. In 2019, the latest year on file, its one sample was 22.8 ppb.

What handles it

No certification claim covers this compound yet.

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.11ppm

Highest yearly average, 2022 to 2025

2025 average: 0.043 ppm

Averaged by year, the highest was 0.11 ppm, in 2022, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 0.19 ppm. In 2025, the latest year on file, its three samples averaged 0.043 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.067 ppm, in 2016.

What handles it

Nitrate

Comes from the source

Below EPA’s limits

0.26ppm

Highest sample; found in 11 of 18

2025 average: 0.12 ppm

The highest sample, in 2022, was 0.26 ppm, below EPA’s legal limit of 10 ppm. In 2025, the latest year on file, its three samples averaged 0.12 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.44 ppm, in 2015.

What handles it

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

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

    Claims: Trihalomethanes (TTHM) Reduction, Lead Reduction, Arsenic (Pentavalent)<=50 ppb Reduction

    For: Total trihalomethanes (TTHM), Lead, Arsenic

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

  • NSF/ANSI 58

    Claims: Trihalomethanes (TTHM) Reduction, Lead Reduction, Arsenic (Pentavalent)<=50 ppb Reduction

    For: Total trihalomethanes (TTHM), Lead, Arsenic

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

At the tap, or for the whole house?

Lead and copper usually come from pipes and fixtures inside or near your home. A whole-house system sits where water enters, so it cannot catch what your own plumbing adds after it. For those, the filter that counts is the one at the tap. 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 water filters for lead, ranked

The best reverse osmosis systems, ranked

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2023 to Sept. 30, 202391.4 UG/LResolved
Groundwater RuleA significant problem found in a state inspection was not fixed on time.EPA: Failure To Address DeficiencyApril 4, 2018—Resolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 8 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Arsenic, fluoride, nitrate and chromium (total) results here are Utah’s own from 2020 on, with EPA’s national file for 2012 to 2019. Haloacetic acids (HAA5) comes from EPA’s file alone, which ends in 2019. Uintah Highlands Improvement District’s own annual report, which it must send you every year, has newer results for those and 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 Dec. 10, 2020 to Aug. 21, 2025; EPA’s compliance samples are from Nov. 20, 2012 to Aug. 15, 2019.

Testing your own tap

Uintah Highlands Improvement District’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 Uintah Highlands Improvement District serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Weber Basin Water Quality Laboratory

    Layton, UT · about 7 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, disinfection byproducts

    (801) 771-1677

  • RJ Analytical LLC

    Pleasant View, UT · about 9 miles

    Certified for bacteria

    (801) 807-8248

  • Davis County Environmental Health Laboratory

    Clearfield, UT · about 10 miles

    Certified for bacteria, minerals and other inorganics

    (801) 525-5115

All 60 certified labs for Utah

Sources

PWSID UTAH29021. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Weber County

All Utah utilities

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