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Tap water quality report

Chautauqua Terrace Hoa

EPA monitoring tested this supplier for 68 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

68
contaminants tested
9
detected
55
people served
0
health-based violations
Montana rankingsLead in MontanaPFAS in Montana
Water source
Ground water
Ownership
Private
Counties served
Flathead

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
27
violations on file
0
still open
ViolationTypeStatusPeriod
Other Monitoring Resolved 2016-07-01
Other Monitoring Resolved 2016-07-01
MR Monitoring Resolved 2014-12-30
MR Monitoring Resolved 2014-12-30
Other Monitoring Resolved 2013-07-01
Other Monitoring Resolved 2013-07-01
Other Monitoring Resolved 2012-10-01
Other Monitoring Resolved 2012-10-01
Other Monitoring Resolved 2012-07-01
Other Monitoring Resolved 2012-07-01

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
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2025
Copper
109.5 µg/L 8.4%
of the EPA limit 1300 µg/L
worst single sample: 120 µg/L
8/10 SYR4 2014–2017
Nitrate-Nitrite
2436.5 µg/L 24%
of the EPA limit 10000 µg/L
worst single sample: 2440 µg/L
8/8 SYR4 2012–2019
Nitrate
1990 µg/L 20%
of the EPA limit 10000 µg/L
 4/4 SYR4 2016–2019
Fluoride
158 µg/L 4%
of the EPA limit 4000 µg/L
worst single sample: 160 µg/L
3/3 SYR4 2013–2019
Combined Uranium
2.19 µg/L 7.3%
of the EPA limit 30 µg/L
worst single sample: 2.2 µg/L
2/2 SYR4 2013–2019
Gross Alpha, Excl. Radon And U
7.475 pCi/L 50%
of the EPA limit 15 pCi/L
worst single sample: 7.6 pCi/L
2/2 SYR4 2013–2019
Barium
40 µg/L 2%
of the EPA limit 2000 µg/L
 1/3 SYR4 2013–2019
Lead
1 µg/L 6.7%
of the EPA limit 15 µg/L
 1/10 SYR4 2014–2017
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, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CTHOA TREASURER
Email
[email protected]

Frequently asked questions about Chautauqua Terrace Hoa

Is Chautauqua Terrace Hoa tap water safe to drink?

EPA monitoring detected 9 contaminants in Chautauqua Terrace Hoa'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 Chautauqua Terrace Hoa's water?

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

How many people does Chautauqua Terrace Hoa serve?

Chautauqua Terrace Hoa reports serving 55 people in Montana, per its EPA record.

Has Chautauqua Terrace Hoa had any water quality violations?

The EPA has 27 violations on file for Chautauqua Terrace Hoa, 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.