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Town of Flaxville

What EPA’s and Montana’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
82 people
Connections
47
Water source
Surface water bought from another system
Based in
Flaxville, MT
County
Daniels
Owner
Local government
Hardness
Very hard
The ZIP code it serves

59222

The short answer

3 results are above the health goal. The worst: Nitrate, above the health goal. 3 health-based violations since 2016.

What handles it

What was found

Copper: EPA’s file records a utility’s copper only when it exceeds the action level. The last here was 1.6 ppm, for the period ending Dec. 31, 1993. None since is on file, so it is not counted as a current finding.

Nitrate, total trihalomethanes (TTHM) and haloacetic acids (HAA5): Montana’s own results, samples taken from March 16, 2020 to July 28, 2026, with EPA’s 2012 to 2019 file for earlier years.

Arsenic, uranium, fluoride and chromium (total): EPA’s compliance monitoring file, samples taken from Aug. 12, 2013 to Sept. 10, 2019. Newer results are in the utility’s annual water quality report.

Above the health goal3

Nitrate

Comes from the source

Above the health goal

15.2ppm

Highest sample; found in 5 of 5

2020 average: 4.9 ppm

One sample, in 2020, was above EPA’s legal limit of 10 ppm, at 15.2 ppm. The next sample at the same point, within 30 days, brought the average back under the limit. 10 ppm is also EPA’s health goal. That is the only year on file, and its five samples averaged 4.9 ppm. EPA recorded no violation for nitrate at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 129 ppm, in 2015, and EPA recorded violations in 2015 and 2016.

What handles it

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

Arsenic

Comes from the source

Above the health goal

4.0ppb

Highest yearly average, 2013 to 2019

2019, one sample: 3.0 ppb

Averaged by year, the highest was 4.0 ppb, in 2016: below EPA’s legal limit of 10 ppb, but above its health goal of zero. In 2019, the latest year on file, its one sample was 3.0 ppb.

What handles it

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

Uranium

Comes from the source

Above the health goal

6.0ppb

Highest yearly average, 2013 to 2019

2019: not found

Averaged by year, the highest was 6.0 ppb, in 2016: below EPA’s legal limit of 30 ppb, but above its health goal of zero. In 2019, the latest year on file, it wasn’t found in its one sample.

What handles it

Below EPA’s limits3

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

29ppb

Highest yearly average, 2020 to 2026

Averaged by year, the highest was 29 ppb, in 2026, below EPA’s legal limit of 80 ppb. Its highest single sample was 32 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 5.3 ppb, in 2014.

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

21ppb

Highest yearly average, 2020 to 2026

Averaged by year, the highest was 21 ppb, in 2026, below EPA’s legal limit of 60 ppb. Its highest single sample was 24 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 4.4 ppb, in 2014.

What handles it

No certification claim covers this compound yet.

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.3ppm

Highest yearly average, 2013 to 2019

2019, one sample: 0.3 ppm

Averaged by year, the highest was 0.3 ppm, in 2013, below EPA’s legal limit of 4.0 ppm. In 2019, the latest year on file, its one sample was 0.3 ppm.

What handles it

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

    Claims: Nitrate/Nitrite (30 ppm challenge), Arsenic (Pentavalent)<=50 ppb Reduction

    For: Nitrate, Arsenic

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

  • NSF/ANSI 58

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

    For: Nitrate, Arsenic, Uranium

    Other certifiers’ wording: Nitrate; 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

Hardness

Very hard, 408 mg/L (23.9 grains per gallon), at its one sampling point, in 2015.

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 23.9 grains per gallon, salt includedSoftener or salt-free conditioner?Montana water hardness, utility by utility

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Nitrate-NitriteA sample was above the legal limit, for a contaminant judged one sample at a time.EPA: Maximum Contaminant Level Violation, Single SampleJuly 1, 2016 to Sept. 30, 201614.4 MG/LResolved
Nitrate-NitriteA sample was above the legal limit, for a contaminant judged one sample at a time.EPA: Maximum Contaminant Level Violation, Single SampleApril 1, 2016 to June 30, 201614.7 MG/LResolved
Nitrate-NitriteA sample was above the legal limit, for a contaminant judged one sample at a time.EPA: Maximum Contaminant Level Violation, Single SampleJan. 1, 2016 to March 31, 201615.2 MG/LResolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 21 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Nitrate, total trihalomethanes (TTHM) and haloacetic acids (HAA5) results here are Montana’s own from 2020 on, with EPA’s national file for 2012 to 2019. Arsenic, uranium, fluoride and chromium (total) come from EPA’s file alone, which ends in 2019. Town of Flaxville’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; Montana’s results run from March 16, 2020 to July 28, 2026; EPA’s compliance samples are from Aug. 12, 2013 to Sept. 10, 2019.

Testing your own tap

Town of Flaxville’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 Montana certifies.

The lab Montana certifies closest to the area Town of Flaxville serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Astro-Chem Lab Inc.

    Williston, ND · about 71 miles

    Certified for bacteria

    (701) 572-7355

Montana State Environmental Laboratory: Private well testing packages for bacteria, metals, nutrients, anions, organic chemicals and more, open to the public. Samples can be mailed, sent by the lab's free courier, or dropped off at the lab. Environmental Laboratory, Montana Department of Public Health and Human Services.

All 36 certified labs for Montana

Sources

PWSID MT0000549. Rebuilt from EPA data on Oct. 18, 2026.

Nearby

All Montana utilities

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