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Alton Town 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
136 people
Connections
105
Water source
Groundwater
Based in
Alton, UT
County
Kane
Owner
Local government
Hardness
Very hard
The ZIP code it serves

84710

The short answer

1 result is above the health goal. The worst: Lead, above the health goal. 6 health-based violations since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2000 to 2022.

Chromium (total), nitrate, arsenic and fluoride: Utah’s own results, samples taken from Oct. 7, 2021 to Sept. 24, 2026, with EPA’s 2012 to 2019 file for earlier years.

Total trihalomethanes (TTHM) and haloacetic acids (HAA5): EPA’s compliance monitoring file, samples taken from Dec. 19, 2019 to Dec. 19, 2019. Newer results are in the utility’s annual water quality report.

Above the health goal1

Lead

Comes from pipes, often your own

Above the health goal

3.0ppb

90th percentile, 2020 to 2022

In the latest period, 9 in 10 homes sampled were at or below 3.0 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

Below EPA’s limits3

Chromium (total)

Comes from the source

Below EPA’s limits

2.6ppb

Highest yearly average, 2022 to 2025

Averaged by year, the highest was 2.6 ppb, in 2025, below EPA’s legal limit of 100 ppb. Its highest single sample was 5.2 ppb. That was also the latest year on file.

What handles it

Nitrate

Comes from the source

Below EPA’s limits

0.13ppm

Highest sample; found in 1 of 4

2026 average: 0.065 ppm

The highest sample, in 2026, was 0.13 ppm, below EPA’s legal limit of 10 ppm. That was also the latest year on file, and its two samples averaged 0.065 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.29 ppm, in 2013.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

0.8ppb

Highest yearly average, 2019

Averaged by year, the highest was 0.8 ppb, in 2019, below EPA’s legal limit of 80 ppb. That is the only year on file.

What handles it

  • NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
  • NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
3 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Fluoride
  • Haloacetic acids (HAA5)

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.”

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

Hardness

Very hard, typically 436 mg/L (25.5 grains per gallon), across 2 sampling points, in 2022.

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 25.5 grains per gallon, salt includedSoftener or salt-free conditioner?Utah water hardness, utility by utility

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Revised Total Coliform RuleColiform results required a check of the system, and the check or its fixes were not done on time.EPA: Treatment Technique, Level 1 Assessment (RTCR)Oct. 26, 2025—Resolved
Revised Total Coliform RuleColiform results required a check of the system, and the check or its fixes were not done on time.EPA: Treatment Technique, Level 1 Assessment (RTCR)Nov. 20, 2023—Resolved
Groundwater RuleA significant problem found in a state inspection was not fixed on time.EPA: Failure To Address DeficiencyDec. 2, 2019—Resolved
Groundwater RuleA significant problem found in a state inspection was not fixed on time.EPA: Failure To Address DeficiencyDec. 2, 2019—Resolved
Groundwater RuleA significant problem found in a state inspection was not fixed on time.EPA: Failure To Address DeficiencyDec. 17, 2016—Resolved
Groundwater RuleA significant problem found in a state inspection was not fixed on time.EPA: Failure To Address DeficiencyDec. 17, 2016—Resolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 54 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Chromium (total), nitrate, arsenic and fluoride results here are Utah’s own from 2021 on, with EPA’s national file for 2012 to 2019. Total trihalomethanes (TTHM) and haloacetic acids (HAA5) come from EPA’s file alone, which ends in 2019. Alton Town Water System’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 Oct. 7, 2021 to Sept. 24, 2026; EPA’s compliance samples are from Dec. 19, 2019 to Dec. 19, 2019.

Testing your own tap

Alton Town 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 Alton Town Water System serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Southern Utah University Water Laboratory

    Cedar City, UT · about 35 miles

    Certified for nitrate, lead and copper, metals, minerals and other inorganics

    (435) 586-7914

  • Southwest Utah Public Health Laboratory

    St. George, UT · about 66 miles

    Certified for bacteria, nitrate

    (435) 986-2598

  • St. George RWRF Laboratory

    St. George, UT · about 70 miles

    Certified for bacteria

    (435) 627-4269

All 60 certified labs for Utah

Sources

PWSID UTAH13001. Rebuilt from EPA data on Oct. 18, 2026.

Also in Kane County

All Utah utilities

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