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Tap water quality report

Heart Butte Water

EPA monitoring tested this supplier for 82 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

82
contaminants tested
9
detected
400
people served
4
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Native American

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.

4
health-based violations
38
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2021-10-16
TT Health-based Resolved 2021-10-16
TT Health-based Resolved 2018-02-27
TT Health-based Resolved 2018-02-27
MON Monitoring Resolved 2024-10-01 → 2024-10-31
MON Monitoring Resolved 2024-10-01 → 2024-10-31
Other Monitoring Resolved 2023-10-01
Other Monitoring Resolved 2023-10-01
Other Monitoring Resolved 2023-10-01
MR Monitoring Resolved 2023-10-01

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
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2025
Nitrate-Nitrite
78.4 µg/L 0.8%
of the EPA limit 10000 µg/L
worst single sample: 82 µg/L
7/9 SYR4 2012–2019
Copper
130 µg/L 10%
of the EPA limit 1300 µg/L
 5/5 SYR4 2019
Lead
2 µg/L 13%
of the EPA limit 15 µg/L
 3/5 SYR4 2019
Combined Uranium
0.4749 µg/L 1.6%
of the EPA limit 30 µg/L
worst single sample: 0.5000 µg/L
2/2 SYR4 2013–2019
Barium
220 µg/L 11%
of the EPA limit 2000 µg/L
 1/1 SYR4 2019
Combined Radium (-226 And -228)
0.7000 pCi/L 14%
of the EPA limit 5 pCi/L
 1/1 SYR4 2019
Fluoride
160 µg/L 4%
of the EPA limit 4000 µg/L
 1/1 SYR4 2019
Gross Alpha, Excl. Radon And U
2.1 pCi/L 14%
of the EPA limit 15 pCi/L
 1/2 SYR4 2013–2019
73 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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDibromochloromethaneDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitrateNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
TATSEY, GREG
Phone
406-845-5774
Email
[email protected]

Frequently asked questions about Heart Butte Water

Is Heart Butte Water tap water safe to drink?

EPA monitoring detected 9 contaminants in Heart Butte Water'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 Heart Butte Water's water?

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

How many people does Heart Butte Water serve?

Heart Butte Water reports serving 400 people in Montana, per its EPA record.

Has Heart Butte Water had any water quality violations?

The EPA has 38 violations on file for Heart Butte Water, of which 4 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.