Tap WaterIndex

← Montana

Tap water quality report

Devon Water Inc

EPA monitoring tested this supplier for 74 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

74
contaminants tested
18
detected
75
people served
58
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
GWP
Ownership
Private
Counties served
Toole

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.

58
health-based violations
785
violations on file
3
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2019-04-01 → 2019-06-30
MCL Health-based Resolved 2019-04-01 → 2019-06-30
MCL Health-based Resolved 2019-04-01 → 2019-06-30
MCL Health-based Resolved 2019-04-01 → 2019-06-30
MCL Health-based Resolved 2019-04-01 → 2019-06-30
MCL Health-based Resolved 2019-04-01 → 2019-06-30
MCL Health-based Resolved 2012-01-01 → 2012-03-31
MCL Health-based Resolved 2012-01-01 → 2012-03-31
MCL Health-based Resolved 2012-01-01 → 2012-03-31
MCL Health-based Resolved 2012-01-01 → 2012-03-31

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
Bromodichloromethane
15 µg/L
No EPA limit set
worst single sample: 17.1 µg/L
16/18 SYR4 2012–2019
Chloroform
77.025 µg/L
No EPA limit set
worst single sample: 99 µg/L
16/18 SYR4 2012–2019
Nitrate-Nitrite
771 µg/L 7.7%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Dibromochloromethane
4.283 µg/L
No EPA limit set
worst single sample: 4.99 µg/L
15/18 SYR4 2012–2019
Dichloroacetic Acid
42.835 µg/L
No EPA limit set
worst single sample: 44.2 µg/L
14/14 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
87.065 µg/L 145%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 100 µg/L
14/14 SYR4 2012–2019
Trichloroacetic Acid
45.34 µg/L
No EPA limit set
worst single sample: 54.7 µg/L
14/14 SYR4 2012–2019
TTHM
94.92 µg/L 119%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 114 µg/L
13/14 SYR4 2012–2019
Copper
74.75 µg/L 5.8%
of the EPA limit 1300 µg/L
worst single sample: 86 µg/L
10/10 SYR4 2013–2016
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2016
Monochloroacetic Acid
3.4005 µg/L
No EPA limit set
worst single sample: 3.6 µg/L
8/14 SYR4 2012–2019
Dibromoacetic Acid
0.7944 µg/L
No EPA limit set
worst single sample: 0.8100 µg/L
5/14 SYR4 2012–2019
Arsenic
1.9 µg/L 19%
of the EPA limit 10 µg/L
worst single sample: 2 µg/L
3/4 SYR4 2013–2018
Barium
152.9 µg/L 7.6%
of the EPA limit 2000 µg/L
worst single sample: 158 µg/L
3/3 SYR4 2013–2016
Fluoride
208.8 µg/L 5.2%
of the EPA limit 4000 µg/L
worst single sample: 212 µg/L
3/3 SYR4 2013–2016
Monobromoacetic Acid
0.3570 µg/L
No EPA limit set
worst single sample: 0.3700 µg/L
3/14 SYR4 2012–2019
Selenium
2.9 µg/L 5.8%
of the EPA limit 50 µg/L
worst single sample: 3 µg/L
3/3 SYR4 2013–2016
Gross Alpha, Excl. Radon And U
4.9 pCi/L 33%
of the EPA limit 15 pCi/L
 1/1 SYR4 2013
56 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, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WHITE, DALE
Phone
406-432-2977
Email
[email protected]

Frequently asked questions about Devon Water Inc

Is Devon Water Inc tap water safe to drink?

EPA monitoring detected 18 contaminants in Devon Water Inc'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 Devon Water Inc's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Nitrate-Nitrite, Dibromochloromethane, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Devon Water Inc serve?

Devon Water Inc reports serving 75 people in Montana, per its EPA record.

Has Devon Water Inc had any water quality violations?

The EPA has 785 violations on file for Devon Water Inc, of which 58 are health-based (a contaminant limit or required treatment was breached) and 3 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.