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Tap water quality report

Big Spur Tr Ct

EPA monitoring tested this supplier for 70 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

70
contaminants tested
10
detected
65
people served
100
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Park

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.

100
health-based violations
147
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2010-11-01 → 2010-11-30
MCL Health-based Resolved 2010-11-01 → 2010-11-30
MCL Health-based Resolved 2010-11-01 → 2010-11-30
MCL Health-based Resolved 2010-11-01 → 2010-11-30
MCL Health-based Resolved 2010-11-01 → 2010-11-30
MCL Health-based Resolved 2010-10-01 → 2010-12-31
MCL Health-based Resolved 2010-10-01 → 2010-12-31
MCL Health-based Resolved 2010-10-01 → 2010-12-31
MCL Health-based Resolved 2010-10-01 → 2010-12-31
MCL Health-based Resolved 2010-10-01 → 2010-12-31

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 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
0.0370 mg/L 247%
above the EPA limit of 0.0150 mg/L
 17/17 LCR 2025
Nitrate-Nitrite
360 µg/L 3.6%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Copper
233.25 µg/L 18%
of the EPA limit 1300 µg/L
worst single sample: 348 µg/L
10/10 SYR4 2014–2017
Arsenic
11.25 µg/L 113%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 13 µg/L
6/6 SYR4 2012–2018
TTHM
0.8900 µg/L 1.1%
of the EPA limit 80 µg/L
worst single sample: 0.9200 µg/L
6/9 SYR4 2012–2019
Dibromoacetic Acid
0.4280 µg/L
No EPA limit set
worst single sample: 0.4300 µg/L
5/6 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
0.4280 µg/L 0.7%
of the EPA limit 60 µg/L
worst single sample: 0.4300 µg/L
5/6 SYR4 2012–2019
Dibromochloromethane
0.5200 µg/L
No EPA limit set
 1/9 SYR4 2012–2019
Fluoride
400 µg/L 10%
of the EPA limit 4000 µg/L
 1/1 SYR4 2012
Lead
5 µg/L 33%
of the EPA limit 15 µg/L
 1/10 SYR4 2014–2017
60 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, TotalAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
VIERS SR, RUSSELL
Phone
406-222-2784

Frequently asked questions about Big Spur Tr Ct

Is Big Spur Tr Ct tap water safe to drink?

EPA monitoring detected 10 contaminants in Big Spur Tr Ct'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 Big Spur Tr Ct's water?

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

How many people does Big Spur Tr Ct serve?

Big Spur Tr Ct reports serving 65 people in Montana, per its EPA record.

Has Big Spur Tr Ct had any water quality violations?

The EPA has 147 violations on file for Big Spur Tr Ct, of which 100 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.