Public water system record
Wyola Water System
Serves Wyola, Big Horn County, MT · 281 people served
Federal records show 3 health-based violations and 134 monitoring/reporting issues for Wyola Water System in the last ten years, including an unresolved Groundwater Rule violation.
System profile
Source water
Groundwater
ZIP
59022
EPA system ID
083090014
- Health-based violations, last 10 years
- 3
- Resolved
- 1
- Unresolved
- 1
- Archived by EPA
- 1
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 134
Key facts
- Wyola Water System draws water from 2 wells.
- Most recent enforcement action: boil water order by EPA, August 2020.
- Record on file since 1993, with 6 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 66 unknown out of 66 service lines.
Check whether Wyola 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 |
|---|---|---|---|---|
|
Groundwater Rule
Treatment technique failure
|
140 | Dec 3, 2020 | Active | No |
|
Revised Total Coliform Rule
Contaminant limit exceeded
|
110 | May 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Groundwater Rule
Treatment technique failure
|
140 | Nov 2, 2018 | Resolved | No |
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 |
|
Lead and Copper Rule
Monitoring and reporting
|
Sep 29, 2025 | Active |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2025 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Sep 29, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Sep 29, 2022 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Endrin
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
LASSO
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Chlordane
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Diquat
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Endothall
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Picloram
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Simazine
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Styrene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Toluene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Benzene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Nitrite
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Nitrite
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2020 | Resolved |
|
Nitrite
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2018 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2017 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Sep 1, 2017 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Sep 1, 2017 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2017 | Resolved |
Full record since 1993
EPA's records for Wyola Water System go back to 1993. Before October 19, 2016 they list 6 health-based violations (3 resolved, 3 archived by EPA without a recorded fix) and 110 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 47 |
| 2000s | 5 | 62 |
| 2010 to October 18, 2016 | 0 | 1 |
| October 19, 2016 to 2019 | 2 | 17 |
| 2020s | 1 | 117 |
Most recent health-based violation before October 19, 2016: Total Coliform, began July 2007, Resolved.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2007 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2007 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 2002 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2002 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 2002 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1997 | Archived |
Enforcement actions
EPA took 2 formal enforcement actions against Wyola Water System and issued 3 boil water orders between 2019 and 2020. The most recent was a boil water order in August 2020.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Aug 17, 2020 | EPA | Boil water order | 1 violation |
| Sep 11, 2019 | EPA | Compliance order (no penalty) | 19 violations (1 health-based): Groundwater Rule, Revised Total Coliform Rule, Nitrate-Nitrite, Nitrite |
| Jul 17, 2019 | EPA | Boil water order | 1 violation |
| Jun 5, 2019 | EPA | Boil water order | 1 violation (1 health-based): Revised Total Coliform Rule |
| Jun 5, 2019 | EPA | Emergency order under section 1431 of the Safe Drinking Water Act | 1 violation (1 health-based): Revised Total Coliform Rule |
What the violations mean
Groundwater Rule
2 incidentsThe 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 each of these violations.
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
Where the water comes from
Wyola Water System draws water from 2 wells.
Annual water quality report
Wyola 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 Wyola 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