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Tap water quality report

Hays/White Cow Canyon Ws

EPA monitoring tested this supplier for 79 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

79
contaminants tested
18
detected
840
people served
15
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.

15
health-based violations
155
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2019-07-03
MCL Health-based Resolved 2009-09-01 → 2009-09-30
MCL Health-based Resolved 2009-09-01 → 2009-09-30
MCL Health-based Resolved 2008-12-01 → 2008-12-31
MCL Health-based Archived 2007-10-01 → 2007-10-31
MCL Health-based Archived 2003-11-01 → 2003-11-30
MCL Health-based Archived 2003-11-01 → 2003-11-30
MCL Health-based Archived 2003-11-01 → 2003-11-30
MCL Health-based Archived 2003-11-01 → 2003-11-30
MCL Health-based Archived 2003-09-01 → 2003-09-30

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
477.4 µg/L 37%
of the EPA limit 1300 µg/L
worst single sample: 527 µg/L
25/25 SYR4 2014–2019
Nitrate-Nitrite
420 µg/L 4.2%
of the EPA limit 10000 µg/L
 20/20 SYR4 2012–2019
Lead
17.6 µg/L 117%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 22 µg/L
12/25 SYR4 2014–2019
TTHM
21.4 µg/L 27%
of the EPA limit 80 µg/L
worst single sample: 23 µg/L
9/12 SYR4 2012–2018
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2023
Total Haloacetic Acids (HAA5)
9.02 µg/L 15%
of the EPA limit 60 µg/L
worst single sample: 10 µg/L
8/10 SYR4 2012–2018
Bromodichloromethane
3.88 µg/L
No EPA limit set
worst single sample: 4 µg/L
7/10 SYR4 2013–2018
Chloroform
17.8 µg/L
No EPA limit set
worst single sample: 19 µg/L
7/10 SYR4 2013–2018
Dibromochloromethane
1.122 µg/L
No EPA limit set
worst single sample: 1.2 µg/L
7/10 SYR4 2013–2018
Dichloroacetic Acid
6.025 µg/L
No EPA limit set
worst single sample: 6.3 µg/L
6/8 SYR4 2013–2018
Trichloroacetic Acid
3.44 µg/L
No EPA limit set
worst single sample: 3.6 µg/L
5/8 SYR4 2013–2018
Dibromoacetic Acid
0.5890 µg/L
No EPA limit set
worst single sample: 0.5900 µg/L
3/8 SYR4 2013–2018
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
 2/2 SYR4 2016–2018
Barium
109.5 µg/L 5.5%
of the EPA limit 2000 µg/L
worst single sample: 110 µg/L
2/2 SYR4 2016–2018
Chromium
8 µg/L 8%
of the EPA limit 100 µg/L
 1/2 SYR4 2016–2018
Combined Radium (-226 And -228)
1 pCi/L 20%
of the EPA limit 5 pCi/L
 1/1 SYR4 2016
Combined Uranium
1 µg/L 3.3%
of the EPA limit 30 µg/L
 1/1 SYR4 2016
Fluoride
200 µg/L 5%
of the EPA limit 4000 µg/L
 1/1 SYR4 2018
61 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, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
RAMONE, KASEY
Phone
406-353-8313
Email
[email protected]

Frequently asked questions about Hays/White Cow Canyon Ws

Is Hays/White Cow Canyon Ws tap water safe to drink?

EPA monitoring detected 18 contaminants in Hays/White Cow Canyon Ws'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 Hays/White Cow Canyon Ws's water?

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

How many people does Hays/White Cow Canyon Ws serve?

Hays/White Cow Canyon Ws reports serving 840 people in Montana, per its EPA record.

Has Hays/White Cow Canyon Ws had any water quality violations?

The EPA has 155 violations on file for Hays/White Cow Canyon Ws, of which 15 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.