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Tap water quality report

Highland Park Utilities Assn

EPA monitoring tested this supplier for 73 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

73
contaminants tested
17
detected
500
people served
5
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Dawson

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

5
health-based violations
70
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1999-01-01 → 2001-12-31
MCL Health-based Resolved 1999-01-01 → 2001-12-31
MCL Health-based Resolved 1999-01-01 → 2001-12-31
MCL Health-based Resolved 1985-02-04 → 1988-02-03
MCL Health-based Resolved 1982-03-17 → 1985-03-16
Other Monitoring Resolved 2023-07-01
Other Monitoring Resolved 2023-07-01
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
703.25 µg/L 54%
of the EPA limit 1300 µg/L
worst single sample: 755 µg/L
10/10 SYR4 2014–2017
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2017
Nitrate-Nitrite
10 µg/L 0.1%
of the EPA limit 10000 µg/L
 10/18 SYR4 2012–2019
Lead
11.1 µg/L 74%
of the EPA limit 15 µg/L
worst single sample: 16 µg/L
8/10 SYR4 2014–2017
Fluoride
1880 µg/L 47%
of the EPA limit 4000 µg/L
worst single sample: 1900 µg/L
3/3 SYR4 2013–2019
Bromodichloromethane
10.73 µg/L
No EPA limit set
worst single sample: 11 µg/L
2/5 SYR4 2013–2019
Bromoform
4.14 µg/L
No EPA limit set
worst single sample: 4.2 µg/L
2/5 SYR4 2013–2019
Chloroform
9.21 µg/L
No EPA limit set
worst single sample: 9.4 µg/L
2/5 SYR4 2013–2019
Dibromoacetic Acid
4.14 µg/L
No EPA limit set
worst single sample: 4.2 µg/L
2/2 SYR4 2014–2017
Dibromochloromethane
11.705 µg/L
No EPA limit set
worst single sample: 12 µg/L
2/5 SYR4 2013–2019
Dichloroacetic Acid
4.085 µg/L
No EPA limit set
worst single sample: 4.1 µg/L
2/2 SYR4 2014–2017
TTHM
36.15 µg/L 45%
of the EPA limit 80 µg/L
worst single sample: 37 µg/L
2/5 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
10.915 µg/L 18%
of the EPA limit 60 µg/L
worst single sample: 11 µg/L
2/2 SYR4 2014–2017
Trichloroacetic Acid
2.66 µg/L
No EPA limit set
worst single sample: 2.7 µg/L
2/2 SYR4 2014–2017
Asbestos
0.1700 MFL 2.4%
of the EPA limit 7 MFL
 1/1 SYR4 2013
Gross Alpha, Excl. Radon And U
3.7 pCi/L 25%
of the EPA limit 15 pCi/L
 1/1 SYR4 2016
Monobromoacetic Acid
0.6200 µg/L
No EPA limit set
 1/2 SYR4 2014–2017
56 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
AGCOUNTRY ACCOUNTING
Phone
406-377-4944

Frequently asked questions about Highland Park Utilities Assn

Is Highland Park Utilities Assn tap water safe to drink?

EPA monitoring detected 17 contaminants in Highland Park Utilities Assn's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Highland Park Utilities Assn's water?

EPA monitoring detected Copper, Lead, Nitrate-Nitrite, Lead, Fluoride, and others. The full list with the level and data source for each is above.

How many people does Highland Park Utilities Assn serve?

Highland Park Utilities Assn reports serving 500 people in Montana, per its EPA record.

Has Highland Park Utilities Assn had any water quality violations?

The EPA has 70 violations on file for Highland Park Utilities Assn, of which 5 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.