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Tap water quality report

Big Sky N. Subdivision

EPA monitoring tested this supplier for 68 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

68
contaminants tested
11
detected
300
people served
2
health-based violations
Idaho rankingsLead in IdahoPFAS in Idaho
Water source
Ground water
Ownership
Private

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.

2
health-based violations
242
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2011-01-01 → 2011-01-31
MCL Health-based Archived 2001-09-28 → 2001-10-27
Other Monitoring Resolved 2025-07-01
MR Monitoring Archived 2025-01-01 → 2025-12-31
MR Monitoring Archived 2025-01-01 → 2025-12-31
MR Monitoring Archived 2025-01-01 → 2025-12-31
MR Monitoring Archived 2025-01-01 → 2025-12-31
MR Monitoring Archived 2025-01-01 → 2025-12-31
MR Monitoring Archived 2025-01-01 → 2025-12-31
MR Monitoring Archived 2025-01-01 → 2025-12-31

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
Nitrate
1417.5 µg/L 14%
of the EPA limit 10000 µg/L
worst single sample: 1440 µg/L
26/32 SYR4 2012–2018
Copper
139.05 µg/L 11%
of the EPA limit 1300 µg/L
worst single sample: 180 µg/L
14/15 SYR4 2013–2019
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2023
Combined Radium (-226 And -228)
4.50435 pCi/L 90%
of the EPA limit 5 pCi/L
worst single sample: 4.947 pCi/L
4/4 SYR4 2013–2016
Barium
68.1 µg/L 3.4%
of the EPA limit 2000 µg/L
worst single sample: 69 µg/L
3/3 SYR4 2013–2016
Fluoride
726 µg/L 18%
of the EPA limit 4000 µg/L
worst single sample: 740 µg/L
3/3 SYR4 2013–2016
Lead
4.9 µg/L 33%
of the EPA limit 15 µg/L
worst single sample: 5 µg/L
3/15 SYR4 2013–2019
Combined Uranium
1.5415 µg/L 5.1%
of the EPA limit 30 µg/L
worst single sample: 1.61 µg/L
2/2 SYR4 2016
Gross Alpha, Excl. Radon And U
2.8135 pCi/L 19%
of the EPA limit 15 pCi/L
worst single sample: 2.88 pCi/L
2/2 SYR4 2016
Chromium
2 µg/L 2%
of the EPA limit 100 µg/L
 1/3 SYR4 2013–2016
Dichloromethane
1 µg/L 20%
of the EPA limit 5 µg/L
 1/4 SYR4 2013–2014
57 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, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
KUGLER, CURTIS
Phone
208-380-6526
Email
[email protected]

Frequently asked questions about Big Sky N. Subdivision

Is Big Sky N. Subdivision tap water safe to drink?

EPA monitoring detected 11 contaminants in Big Sky N. Subdivision'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 Sky N. Subdivision's water?

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

How many people does Big Sky N. Subdivision serve?

Big Sky N. Subdivision reports serving 300 people in Idaho, per its EPA record.

Has Big Sky N. Subdivision had any water quality violations?

The EPA has 242 violations on file for Big Sky N. Subdivision, of which 2 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.