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Tap water quality report

Wilderness Plateau Water and Sewer Dist

EPA monitoring tested this supplier for 66 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

66
contaminants tested
8
detected
208
people served
10
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Local government
Counties served
Lincoln

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.

10
health-based violations
252
violations on file
5
still open
ViolationTypeStatusPeriod
TT Health-based Addressed 2020-07-01
TT Health-based Addressed 2020-07-01
TT Health-based Addressed 2020-07-01
TT Health-based Addressed 2020-07-01
TT Health-based Addressed 2020-07-01
MCL Health-based Resolved 2010-07-01 → 2010-07-31
MCL Health-based Resolved 2010-07-01 → 2010-07-31
MCL Health-based Resolved 2010-07-01 → 2010-07-31
MCL Health-based Resolved 2010-07-01 → 2010-07-31
MCL Health-based Resolved 2010-07-01 → 2010-07-31

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
Nitrate-Nitrite
230 µg/L 2.3%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2023
Copper
283 µg/L 22%
of the EPA limit 1300 µg/L
worst single sample: 310 µg/L
10/10 SYR4 2014–2017
Combined Radium (-226 And -228)
1.3 pCi/L 26%
of the EPA limit 5 pCi/L
 1/2 SYR4 2013–2016
Dibromoacetic Acid
0.2700 µg/L
No EPA limit set
 1/2 SYR4 2014–2017
Gross Alpha, Excl. Radon And U
2 pCi/L 13%
of the EPA limit 15 pCi/L
 1/1 SYR4 2013
TTHM
0.5700 µg/L 0.7%
of the EPA limit 80 µg/L
 1/4 SYR4 2012–2017
Total Haloacetic Acids (HAA5)
0.2700 µg/L 0.5%
of the EPA limit 60 µg/L
 1/2 SYR4 2014–2017
58 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-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneChloroformCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDichloroacetic AcidDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMethoxychlorMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CURRY, TERESA
Phone
406-291-2182

Frequently asked questions about Wilderness Plateau Water and Sewer Dist

Is Wilderness Plateau Water and Sewer Dist tap water safe to drink?

EPA monitoring detected 8 contaminants in Wilderness Plateau Water and Sewer Dist'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 Wilderness Plateau Water and Sewer Dist's water?

EPA monitoring detected Nitrate-Nitrite, Lead, Copper, Combined Radium (-226 And -228), Dibromoacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Wilderness Plateau Water and Sewer Dist serve?

Wilderness Plateau Water and Sewer Dist reports serving 208 people in Montana, per its EPA record.

Has Wilderness Plateau Water and Sewer Dist had any water quality violations?

The EPA has 252 violations on file for Wilderness Plateau Water and Sewer Dist, of which 10 are health-based (a contaminant limit or required treatment was breached) and 5 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.