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Tap water quality report

Stoneridge Home Owners Association

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
95
people served
0
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Flathead

Compliance record

No violations on file. The EPA has no formal drinking-water violations recorded for this supplier.

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate-Nitrite
70 µg/L 0.7%
of the EPA limit 10000 µg/L
 14/16 SYR4 2012–2019
Copper
260 µg/L 20%
of the EPA limit 1300 µg/L
 13/15 SYR4 2013–2019
Nitrate
50 µg/L 0.5%
of the EPA limit 10000 µg/L
 10/12 SYR4 2013–2019
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2025
Fluoride
450 µg/L 11%
of the EPA limit 4000 µg/L
 6/6 SYR4 2013–2019
Lead
5 µg/L 33%
of the EPA limit 15 µg/L
 5/15 SYR4 2013–2019
Arsenic
7 µg/L 70%
of the EPA limit 10 µg/L
 4/6 SYR4 2013–2019
Barium
90 µg/L 4.5%
of the EPA limit 2000 µg/L
 4/6 SYR4 2013–2019
Combined Uranium
20 µg/L 67%
of the EPA limit 30 µg/L
 4/4 SYR4 2013–2019
Combined Radium (-226 And -228)
1.6 pCi/L 32%
of the EPA limit 5 pCi/L
 2/2 SYR4 2016
Gross Alpha, Excl. Radon And U
6.9 pCi/L 46%
of the EPA limit 15 pCi/L
 2/3 SYR4 2013–2016
57 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-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
PIRRIE, GAVIN
Phone
406-871-3368
Email
gpwaterworks@gmail.com

Frequently asked questions about Stoneridge Home Owners Association

Is Stoneridge Home Owners Association tap water safe to drink?

EPA monitoring detected 11 contaminants in Stoneridge Home Owners Association'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 Stoneridge Home Owners Association's water?

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

How many people does Stoneridge Home Owners Association serve?

Stoneridge Home Owners Association reports serving 95 people in Montana, per its EPA record.

Has Stoneridge Home Owners Association had any water quality violations?

The EPA has no formal drinking-water violations on file for Stoneridge Home Owners Association.

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.