Public water system record
Mnihnapa Water System
Serves Lodge Pole, Blaine County, MT · 220 people served
Federal records show 3 health-based violations and 75 monitoring/reporting issues for Mnihnapa Water System in the last ten years. The most serious issue in this window was a Revised Total Coliform Rule violation that EPA lists as archived, not resolved.
System profile
- Health-based violations, last 10 years
- 3
- Resolved
- 2
- Unresolved
- 0
- Archived by EPA
- 1
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 75
Key facts
- Mnihnapa Water System draws water from 1 well.
- Most recent enforcement action: boil water order by EPA, August 2020.
- Record on file since 1992, with 18 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 92 unknown out of 92 service lines.
Check whether Mnihnapa Water System 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 |
|---|---|---|---|---|
|
Revised Total Coliform Rule
Contaminant limit exceeded
|
110 | Aug 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Feb 1, 2016 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 2, 2014 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Radium-228
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Radium-226
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Radium-228
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Radium-226
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
E. coli
Monitoring and reporting
|
Aug 27, 2020 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Radium-228
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Radium-226
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Diquat
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Endothall
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Dalapon
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Picloram
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
2,4-D
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Barium
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Mercury
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Nickel
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Selenium
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Beryllium, Total
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Thallium, Total
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Cadmium
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Chlordane
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
2,3,7,8-TCDD
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
LASSO
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Picloram
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Simazine
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Endothall
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Diquat
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Endrin
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Asbestos
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
E. coli
Monitoring and reporting
|
Oct 15, 2013 | Resolved |
Full record since 1992
EPA's records for Mnihnapa Water System go back to 1992. Before October 19, 2016 they list 18 health-based violations (9 resolved, 9 archived by EPA without a recorded fix) and 91 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 7 | 22 |
| 2000s | 3 | 66 |
| 2010 to October 18, 2016 | 8 | 3 |
| October 19, 2016 to 2019 | 0 | 42 |
| 2020s | 1 | 30 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began February 2016, Resolved.
Show all 18 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 2016 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2014 | Resolved |
|
Groundwater Rule
Treatment technique failure
|
Jun 2, 2014 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Jun 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2013 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2013 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Feb 1, 2011 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Aug 1, 2007 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 2003 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2003 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1999 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1999 | Archived |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Dec 1, 1997 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1997 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1996 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1996 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1996 | Archived |
Enforcement actions
EPA took 4 formal enforcement actions against Mnihnapa Water System and issued 1 boil water order between 2007 and 2020. The most recent was a boil water order in August 2020.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Aug 28, 2020 | EPA | Boil water order | 1 violation (1 health-based): Revised Total Coliform Rule |
| Aug 28, 2020 | EPA | Emergency order under section 1431 of the Safe Drinking Water Act | 1 violation (1 health-based): Revised Total Coliform Rule |
| Oct 12, 2016 | EPA | Compliance order (no penalty) | 2 violations (1 health-based): E. coli, Surface Water Treatment Rule |
| Oct 9, 2008 | EPA | Compliance order (no penalty) | 6 violations (3 health-based): Total Coliform |
| Aug 24, 2007 | EPA | Emergency order under section 1431 of the Safe Drinking Water Act | 1 violation (1 health-based): Total Coliform |
What the violations mean
Revised Total Coliform Rule
1 incidentThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Surface Water Treatment Rule
1 incidentThe system did not complete a treatment step or action that the Surface Water Treatment Rule requires (a treatment technique violation).
The utility had to notify customers about this violation.
Groundwater Rule
1 incidentThe system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Mnihnapa Water System draws water from 1 well.
Annual water quality report
Mnihnapa Water System 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 Mnihnapa Water System 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 EPA Region 8.
Certified drinking water labs by state EPA guidance for private wells