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Tap water quality report

North Star Pud

EPA monitoring tested this supplier for 75 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

75
contaminants tested
16
detected
715
people served
0
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Lewis and Clark

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.

0
health-based violations
98
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2025-10-01
MR Monitoring Resolved 2025-10-01
MR Monitoring Resolved 2025-10-01
MR Monitoring Resolved 2023-01-01 → 2023-12-31
MR Monitoring Resolved 2023-01-01 → 2023-12-31
MR Monitoring Resolved 2023-01-01 → 2023-12-31
MR Monitoring Resolved 2023-01-01 → 2023-12-31
MR Monitoring Resolved 2023-01-01 → 2023-12-31
MR Monitoring Resolved 2023-01-01 → 2023-12-31
MR Monitoring Resolved 2023-01-01 → 2023-12-31

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate-Nitrite
3200 µg/L 32%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Copper
159 µg/L 12%
of the EPA limit 1300 µg/L
 15/15 SYR4 2013–2019
Lead
0.0070 mg/L 47%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
Bromoform
2.4 µg/L
No EPA limit set
 6/9 SYR4 2012–2019
TTHM
3.7 µg/L 4.6%
of the EPA limit 80 µg/L
 4/6 SYR4 2014–2019
Dibromoacetic Acid
0.5600 µg/L
No EPA limit set
 3/5 SYR4 2014–2019
Arsenic
3 µg/L 30%
of the EPA limit 10 µg/L
 2/2 SYR4 2016–2019
Fluoride
200 µg/L 5%
of the EPA limit 4000 µg/L
 2/2 SYR4 2016–2019
Barium
85 µg/L 4.3%
of the EPA limit 2000 µg/L
 1/2 SYR4 2016–2019
Combined Radium (-226 And -228)
3.1 pCi/L 62%
of the EPA limit 5 pCi/L
 1/1 SYR4 2016
Combined Uranium
2 µg/L 6.7%
of the EPA limit 30 µg/L
 1/1 SYR4 2016
Dibromochloromethane
1.1 µg/L
No EPA limit set
 1/9 SYR4 2012–2019
Gross Alpha, Excl. Radon And U
2.3 pCi/L 15%
of the EPA limit 15 pCi/L
 1/1 SYR4 2016
Lead
1 µg/L 6.7%
of the EPA limit 15 µg/L
 1/15 SYR4 2013–2019
Selenium
2 µg/L 4%
of the EPA limit 50 µg/L
 1/2 SYR4 2016–2019
Total Haloacetic Acids (HAA5)
0.5600 µg/L 0.9%
of the EPA limit 60 µg/L
 1/5 SYR4 2014–2019
59 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
QUIGLEY, DUNCAN J
Phone
406-422-9194

Frequently asked questions about North Star Pud

Is North Star Pud tap water safe to drink?

EPA monitoring detected 16 contaminants in North Star Pud'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 North Star Pud's water?

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

How many people does North Star Pud serve?

North Star Pud reports serving 715 people in Montana, per its EPA record.

Has North Star Pud had any water quality violations?

The EPA has 98 violations on file for North Star Pud, of which 0 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.