Is Stoneridge Home Owners Association Tap Water Safe? Quality Report

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 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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Nitrate-Nitrite	70 µg/L 0.7% of the EPA limit 10000 µg/L	14/16	SYR4	2012–2019
Copper	212 µg/L 16% of the EPA limit 1300 µg/L worst single sample: 260 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	447.5 µg/L 11% of the EPA limit 4000 µg/L worst single sample: 450 µg/L	6/6	SYR4	2013–2019
Lead	4.8 µg/L 32% of the EPA limit 15 µg/L worst single sample: 5 µg/L	5/15	SYR4	2013–2019
Arsenic	6.25 µg/L 63% of the EPA limit 10 µg/L worst single sample: 7 µg/L	4/6	SYR4	2013–2019
Barium	85.5 µg/L 4.3% of the EPA limit 2000 µg/L worst single sample: 90 µg/L	4/6	SYR4	2013–2019
Combined Uranium	19.55 µg/L 65% of the EPA limit 30 µg/L worst single sample: 20 µg/L	4/4	SYR4	2013–2019
Combined Radium (-226 And -228)	1.595 pCi/L 32% of the EPA limit 5 pCi/L worst single sample: 1.6 pCi/L	2/2	SYR4	2016
Gross Alpha, Excl. Radon And U	6.855 pCi/L 46% of the EPA limit 15 pCi/L worst single sample: 6.9 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: [email protected]

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.