Public water system record
Hidden Lake Colony
Serves Cut Bank and Hidden Lake Colony, Glacier County, MT · 80 people served
Federal records show 2 health-based violations and 43 monitoring/reporting issues for Hidden Lake Colony in the last ten years. The most serious issue in this window was a resolved Arsenic violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 43
Key facts
- Hidden Lake Colony draws water from 1 well.
- Most recent formal enforcement: compliance order (no penalty) by Montana, January 2014.
- Record on file since 1997, with 9 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 1 service line.
Check whether Hidden Lake Colony serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Arsenic
Contaminant limit exceeded
|
330 | Oct 1, 2017 | Resolved | No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jul 1, 2017 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2025 | Active |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2023 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Arsenic
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2023 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
E. coli
Monitoring and reporting
|
Sep 22, 2022 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2022 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2021 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2020 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Chlordane
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
2,4-D
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
LASSO
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Atrazine
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Picloram
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Simazine
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Dalapon
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Endrin
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2017 | Resolved |
|
Arsenic
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
Full record since 1997
EPA's records for Hidden Lake Colony go back to 1997. Before October 19, 2016 they list 9 health-based violations (9 resolved) and 14 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 2 |
| 2000s | 1 | 1 |
| 2010 to October 18, 2016 | 8 | 11 |
| October 19, 2016 to 2019 | 2 | 26 |
| 2020s | 0 | 16 |
Most recent health-based violation before October 19, 2016: Arsenic, began July 2014, Resolved.
Show all 9 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
|
Jul 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.023 mg/L, federal limit 0.01 mg/L (2.3 times the limit)
|
Apr 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.028 mg/L, federal limit 0.01 mg/L (2.8 times the limit)
|
Jan 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.031 mg/L, federal limit 0.01 mg/L (3.1 times the limit)
|
Oct 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.036 mg/L, federal limit 0.01 mg/L (3.6 times the limit)
|
Jul 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.025 mg/L, federal limit 0.01 mg/L (2.5 times the limit)
|
Jan 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.038 mg/L, federal limit 0.01 mg/L (3.8 times the limit)
|
Oct 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.042 mg/L, federal limit 0.01 mg/L (4.2 times the limit)
|
Jul 1, 2012 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2006 | Resolved |
Enforcement actions
Montana regulators took 1 formal enforcement action against Hidden Lake Colony in 2014, filed as 2 records in EPA's data. The most recent was a compliance order (no penalty) in January 2014.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jan 10, 2014 | Montana | Compliance order (no penalty) | 11 violations (10 health-based): Arsenic |
What the violations mean
Arsenic
1 incidentArsenic exceeded the federal limit
Long-term arsenic exposure is linked to cancer and cardiovascular effects
Nitrate-Nitrite
1 incidentTest results for Nitrate-Nitrite were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about this violation.
Where the water comes from
Hidden Lake Colony draws water from 1 well.
Annual water quality report
Hidden Lake Colony must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Hidden Lake Colony for a copy.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Montana.
Certified drinking water labs by state EPA guidance for private wells