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Pinnacle Estates of Glendive

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
50 people
Connections
9
Water source
Groundwater
Based in
Glendive, MT
County
Dawson
Owner
Private
The ZIP code it serves

59714

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. 6 health-based violations since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2018 to 2025.

Total trihalomethanes (TTHM), haloacetic acids (HAA5), fluoride, nitrate, arsenic and chromium (total): Montana’s own results, samples taken from Dec. 10, 2020 to Aug. 12, 2026, with EPA’s 2012 to 2019 file for earlier years.

Uranium: EPA’s compliance monitoring file, samples taken from Jan. 18, 2018 to Aug. 7, 2018. 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

117ppb

Highest yearly average, 2020 to 2026

2026 average: 57 ppb

Averaged by year, the highest was 117 ppb, in 2023, above EPA’s legal limit of 80 ppb. Its highest single sample was 121 ppb. In 2026, the latest year on file, its three samples averaged 57 ppb. EPA recorded violations for total trihalomethanes (TTHM) at this utility in 2024, 2025 and 2026. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 23 ppb, in 2018.

What handles it

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

Above the health goal2

Uranium

Comes from the source

Above the health goal

11ppb

Highest yearly average, 2018

Averaged by year, the highest was 11 ppb, in 2018: below EPA’s legal limit of 30 ppb, but above its health goal of zero. That is the only year on file.

What handles it

Lead

Comes from pipes, often your own

Above the health goal

5.0ppb

90th percentile, 2023 to 2025

In the latest period, 9 in 10 homes sampled were at or below 5.0 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

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

54.8ppb

Highest yearly average, 2020 to 2026

2026 average: 35.7 ppb

Averaged by year, the highest was 54.8 ppb, in 2025, below EPA’s legal limit of 60 ppb. Its highest single sample was 72 ppb. In 2026, the latest year on file, its three samples averaged 35.7 ppb. EPA recorded no violation for haloacetic acids (HAA5) at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 25 ppb, in 2018.

What handles it

No certification claim covers this compound yet.

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.6ppm

Highest yearly average, 2022 to 2025

2025, one sample: 0.4 ppm

Averaged by year, the highest was 0.6 ppm, in 2022, below EPA’s legal limit of 4.0 ppm. In 2025, the latest year on file, its one sample was 0.4 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.6 ppm, in 2018.

What handles it

Nitrate

Comes from the source

Below EPA’s limits

1.3ppm

Highest sample; found in 5 of 6

2025, one sample: 0.27 ppm

The highest sample, in 2022, was 1.3 ppm, below EPA’s legal limit of 10 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 sample of 2.6 ppm, in 2018.

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.
  • Arsenic
  • 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

    For: Total trihalomethanes (TTHM), Lead

    Other certifiers’ wording: VOC Reduction

  • NSF/ANSI 58

    Claims: Trihalomethanes (TTHM) Reduction, Uranium, Lead Reduction

    For: Total trihalomethanes (TTHM), Uranium, 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

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2026 to March 31, 20260.081 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2025 to Dec. 31, 20250.084 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2025 to Sept. 30, 20250.086 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2025 to March 31, 20250.082 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2024 to Dec. 31, 20240.082 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2024 to Sept. 30, 202486 UG/LResolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 35 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Total trihalomethanes (TTHM), haloacetic acids (HAA5), fluoride, nitrate, arsenic and chromium (total) results here are Montana’s own from 2020 on, with EPA’s national file for 2012 to 2019. Uranium comes from EPA’s file alone, which ends in 2019. Pinnacle Estates of Glendive’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 Dec. 10, 2020 to Aug. 12, 2026; EPA’s compliance samples are from Jan. 18, 2018 to Aug. 7, 2018.

Testing your own tap

Pinnacle Estates of Glendive’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 3 labs Montana certifies closest to the area Pinnacle Estates of Glendive serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Bridger Analytical Laboratory

    Bozeman, MT · about 28 miles

    Certified for bacteria, minerals and other inorganics

    (406) 582-0822

  • Energy Laboratories, Inc.

    Helena, MT · about 63 miles

    Certified for bacteria, minerals and other inorganics, organic chemicals

    (406) 442-0711

  • DPHHS State of Montana Environmental Laboratory

    Helena, MT · about 64 miles

    Certified for bacteria, minerals and other inorganics, organic chemicals

    (406) 444-3444

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 MT0002939. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Dawson County

All Montana utilities

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