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Tap water quality report

Spring Tree Ridge

EPA monitoring tested this supplier for 73 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

73
contaminants tested
14
detected
80
people served
66
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Cascade

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.

66
health-based violations
517
violations on file
8
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2017-04-07
TT Health-based Resolved 2017-04-07
TT Health-based Resolved 2017-04-07
MCL Health-based Resolved 2014-10-01 → 2014-12-31
MCL Health-based Resolved 2014-10-01 → 2014-12-31
MCL Health-based Resolved 2014-10-01 → 2014-12-31
MCL Health-based Resolved 2014-10-01 → 2014-12-31
MCL Health-based Resolved 2014-10-01 → 2014-12-31
MCL Health-based Resolved 2014-07-01 → 2014-09-30
MCL Health-based Resolved 2014-07-01 → 2014-09-30

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
Arsenic
20 µg/L 200%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 24 µg/L
21/31 SYR4 2012–2019
Combined Uranium
5.3 µg/L 18%
of the EPA limit 30 µg/L
worst single sample: 7 µg/L
18/18 SYR4 2013–2018
Copper
303 µg/L 23%
of the EPA limit 1300 µg/L
worst single sample: 380 µg/L
15/20 SYR4 2013–2019
Gross Alpha, Excl. Radon And U
23.5 pCi/L 157%
of the EPA limit, at the 95th percentile of samples — 15 pCi/L
worst single sample: 34 pCi/L
15/18 SYR4 2013–2018
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 9/9 LCR 2025
Nitrate-Nitrite
30 µg/L 0.3%
of the EPA limit 10000 µg/L
 8/18 SYR4 2012–2019
Lead
1.85 µg/L 12%
of the EPA limit 15 µg/L
worst single sample: 2 µg/L
4/20 SYR4 2013–2019
Fluoride
2770 µg/L 69%
of the EPA limit 4000 µg/L
worst single sample: 2800 µg/L
3/3 SYR4 2012–2017
Bromoform
1.39 µg/L
No EPA limit set
worst single sample: 1.4 µg/L
2/4 SYR4 2012–2019
Dibromoacetic Acid
0.5700 µg/L
No EPA limit set
worst single sample: 0.5800 µg/L
2/2 SYR4 2018–2019
Selenium
1.95 µg/L 3.9%
of the EPA limit 50 µg/L
worst single sample: 2 µg/L
2/2 SYR4 2012–2017
TTHM
1.695 µg/L 2.1%
of the EPA limit 80 µg/L
worst single sample: 1.7 µg/L
2/4 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
0.5700 µg/L 1%
of the EPA limit 60 µg/L
worst single sample: 0.5800 µg/L
2/2 SYR4 2018–2019
Combined Radium (-226 And -228)
4.8 pCi/L 96%
of the EPA limit 5 pCi/L
 1/1 SYR4 2013
59 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, TotalBromodichloromethaneChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDichloroacetic AcidDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WILKINSON, TIM
Phone
406-788-3741

Frequently asked questions about Spring Tree Ridge

Is Spring Tree Ridge tap water safe to drink?

EPA monitoring detected 14 contaminants in Spring Tree Ridge'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 Spring Tree Ridge's water?

EPA monitoring detected Arsenic, Combined Uranium, Copper, Gross Alpha, Excl. Radon And U, Lead, and others. The full list with the level and data source for each is above.

How many people does Spring Tree Ridge serve?

Spring Tree Ridge reports serving 80 people in Montana, per its EPA record.

Has Spring Tree Ridge had any water quality violations?

The EPA has 517 violations on file for Spring Tree Ridge, of which 66 are health-based (a contaminant limit or required treatment was breached) and 8 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.