Public water system record
Cooke City Water District
Serves Cooke City, Park County, MT · 300 people served
Federal records show no health-based violations and 104 monitoring/reporting issues for Cooke City Water District in the last ten years.
System profile
Source water
Groundwater
ZIP
59020
EPA system ID
MT0000187
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 104
Key facts
- Cooke City Water District draws water from 3 wells.
- Most recent enforcement action: boil water order by Montana, June 2009.
- Record on file since 1996, with 8 health-based violations before October 19, 2016.
- Lead pipe inventory: 1 lead and 32 unknown out of 102 service lines.
Check whether Cooke City Water District 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.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2022 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2020 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2020 | Resolved |
|
Chlordane
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
2,4-D
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
LASSO
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Atrazine
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Picloram
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Simazine
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Dalapon
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Endrin
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2017 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2016 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Chlordane
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
LASSO
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Picloram
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Endrin
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
Full record since 1996
EPA's records for Cooke City Water District go back to 1996. Before October 19, 2016 they list 8 health-based violations (8 resolved) and 151 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 36 |
| 2000s | 8 | 41 |
| 2010 to October 18, 2016 | 0 | 74 |
| October 19, 2016 to 2019 | 0 | 4 |
| 2020s | 0 | 55 |
Most recent health-based violation before October 19, 2016: Total Coliform, began August 2009, Resolved.
Show all 8 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2009 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 26, 2009 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Jun 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2008 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 31, 2004 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 2002 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 2002 | Resolved |
Enforcement actions
Montana regulators issued 1 boil water order to Cooke City Water District in 2009, filed as 2 records in EPA's data. The most recent was a boil water order in June 2009.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jun 17, 2009 | Montana | Boil water order | 2 violations (2 health-based): Total Coliform |
Where the water comes from
Cooke City Water District draws water from 3 wells.
Annual water quality report
Cooke City Water District 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 Cooke City Water District 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