Is Rio Vista Estates Hoa Assoc Inc Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Private
Counties served: Carbon

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.

health-based violations

165

violations on file

still open

Violation	Type	Status	Period
MR	Monitoring	Resolved	2024-10-01
MR	Monitoring	Resolved	2024-10-01
MR	Monitoring	Resolved	2024-10-01
MR	Monitoring	Resolved	2021-12-30
MR	Monitoring	Resolved	2021-12-30
Other	Monitoring	Resolved	2020-07-01
Other	Monitoring	Resolved	2020-07-01
MR	Monitoring	Resolved	2019-01-01 → 2019-03-31
MR	Monitoring	Resolved	2019-01-01 → 2019-03-31
MR	Monitoring	Resolved	2019-01-01 → 2019-03-31

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Nitrate-Nitrite	2250 µg/L 23% of the EPA limit 10000 µg/L	16/16	SYR4	2012–2019
Copper	302 µg/L 23% of the EPA limit 1300 µg/L worst single sample: 400 µg/L	15/15	SYR4	2014–2018
Lead	3.49 µg/L 23% of the EPA limit 15 µg/L worst single sample: 3.7 µg/L	15/15	SYR4	2014–2018
Lead	0.0030 mg/L 20% of the EPA limit 0.0150 mg/L	9/9	LCR	2027
TTHM	26.65 µg/L 33% of the EPA limit 80 µg/L worst single sample: 35.2 µg/L	7/8	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	13.67 µg/L 23% of the EPA limit 60 µg/L worst single sample: 16.1 µg/L	7/7	SYR4	2013–2018
Chloroform	6.1 µg/L No EPA limit set worst single sample: 6.4 µg/L	6/8	SYR4	2013–2019
Dichloroacetic Acid	4.825 µg/L No EPA limit set worst single sample: 5.4 µg/L	6/7	SYR4	2013–2018
Arsenic	1.3 µg/L 13% of the EPA limit 10 µg/L	5/5	SYR4	2012–2019
Trichloroacetic Acid	4.3 µg/L No EPA limit set	5/7	SYR4	2013–2018
Fluoride	597 µg/L 15% of the EPA limit 4000 µg/L worst single sample: 600 µg/L	4/4	SYR4	2012–2019
Barium	26.89 µg/L 1.3% of the EPA limit 2000 µg/L worst single sample: 27.1 µg/L	3/4	SYR4	2012–2019
Bromodichloromethane	9.005 µg/L No EPA limit set worst single sample: 9.4 µg/L	2/8	SYR4	2013–2019
Selenium	1.9415 µg/L 3.9% of the EPA limit 50 µg/L worst single sample: 2 µg/L	2/4	SYR4	2012–2019
Bromoform	4.8 µg/L No EPA limit set	1/8	SYR4	2013–2019
Chromium	0.6600 µg/L 0.7% of the EPA limit 100 µg/L	1/4	SYR4	2012–2019
Combined Radium (-226 And -228)	0.8500 pCi/L 17% of the EPA limit 5 pCi/L	1/1	SYR4	2016
Dibromoacetic Acid	6.4 µg/L No EPA limit set	1/7	SYR4	2013–2018
Dibromochloromethane	14.6 µg/L No EPA limit set	1/8	SYR4	2013–2019
Gross Alpha, Excl. Radon And U	5.16 pCi/L 34% of the EPA limit 15 pCi/L	1/1	SYR4	2016
Monobromoacetic Acid	1.4 µg/L No EPA limit set	1/7	SYR4	2013–2018
Monochloroacetic Acid	1.8 µg/L No EPA limit set	1/7	SYR4	2013–2018

49 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, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: SPITZER, DARCI
Phone: 406-543-8033
Email: [email protected]

Frequently asked questions about Rio Vista Estates Hoa Assoc Inc

Is Rio Vista Estates Hoa Assoc Inc tap water safe to drink?

EPA monitoring detected 22 contaminants in Rio Vista Estates Hoa Assoc Inc'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 Rio Vista Estates Hoa Assoc Inc's water?

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

How many people does Rio Vista Estates Hoa Assoc Inc serve?

Rio Vista Estates Hoa Assoc Inc reports serving 50 people in Montana, per its EPA record.

Has Rio Vista Estates Hoa Assoc Inc had any water quality violations?

The EPA has 165 violations on file for Rio Vista Estates Hoa Assoc Inc, of which 0 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.