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Tap water quality report

Golden Estates Homeowners Association

EPA monitoring tested this supplier for 66 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

66
contaminants tested
16
detected
400
people served
0
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Lewis and Clark

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.

0
health-based violations
349
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2023-09-20
MR Monitoring Resolved 2023-09-20
MR Monitoring Resolved 2023-09-20
MR Monitoring Resolved 2023-09-20
MR Monitoring Resolved 2019-06-13
MR Monitoring Resolved 2019-06-13
MR Monitoring Resolved 2019-06-13
Other Monitoring Resolved 2014-10-01
Other Monitoring Resolved 2014-10-01
Other Monitoring Resolved 2014-07-01

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-Nitrite
4317.5 µg/L 43%
of the EPA limit 10000 µg/L
worst single sample: 4880 µg/L
36/36 SYR4 2012–2019
Lead
0.0050 mg/L 33%
of the EPA limit 0.0150 mg/L
 16/16 LCR 2025
Copper
420 µg/L 32%
of the EPA limit 1300 µg/L
worst single sample: 490 µg/L
15/15 SYR4 2013–2019
Fluoride
500 µg/L 13%
of the EPA limit 4000 µg/L
 8/8 SYR4 2012–2019
Lead
2 µg/L 13%
of the EPA limit 15 µg/L
 8/15 SYR4 2013–2019
Arsenic
5 µg/L 50%
of the EPA limit 10 µg/L
 6/6 SYR4 2012–2019
Barium
118.5 µg/L 5.9%
of the EPA limit 2000 µg/L
worst single sample: 120 µg/L
4/6 SYR4 2012–2019
Combined Uranium
6.85 µg/L 23%
of the EPA limit 30 µg/L
worst single sample: 7 µg/L
4/4 SYR4 2016–2019
Picloram
0.7400 µg/L 0.1%
of the EPA limit 500 µg/L
 4/8 SYR4 2013–2019
Selenium
4.85 µg/L 9.7%
of the EPA limit 50 µg/L
worst single sample: 5 µg/L
4/6 SYR4 2012–2019
Chloroform
0.9400 µg/L
No EPA limit set
worst single sample: 0.9500 µg/L
2/6 SYR4 2012–2019
Chromium
18.85 µg/L 19%
of the EPA limit 100 µg/L
worst single sample: 19 µg/L
2/6 SYR4 2012–2019
Di(2-ethylhexyl) Phthalate
2.865 µg/L 48%
of the EPA limit 6 µg/L
worst single sample: 2.9 µg/L
2/7 SYR4 2013–2019
Gross Alpha, Excl. Radon And U
4.135 pCi/L 28%
of the EPA limit 15 pCi/L
worst single sample: 4.2 pCi/L
2/4 SYR4 2016–2019
TTHM
0.9400 µg/L 1.2%
of the EPA limit 80 µg/L
worst single sample: 0.9500 µg/L
2/6 SYR4 2012–2019
Combined Radium (-226 And -228)
2.8 pCi/L 56%
of the EPA limit 5 pCi/L
 1/2 SYR4 2019
50 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 TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDibromochloromethaneDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
ROCKY MOUNTAIN OPERATIONS
Phone
406-442-2949
Email
[email protected]

Frequently asked questions about Golden Estates Homeowners Association

Is Golden Estates Homeowners Association tap water safe to drink?

EPA monitoring detected 16 contaminants in Golden Estates Homeowners 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 Golden Estates Homeowners Association's water?

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

How many people does Golden Estates Homeowners Association serve?

Golden Estates Homeowners Association reports serving 400 people in Montana, per its EPA record.

Has Golden Estates Homeowners Association had any water quality violations?

The EPA has 349 violations on file for Golden Estates Homeowners Association, 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.