Public water system record
Town of West Yellowstone
Serves West Yellowstone, Gallatin County, MT · 9,899 people served
Federal records show 1 health-based violation and 41 monitoring/reporting issues for Town of West Yellowstone in the last ten years. The most serious issue in this window was a resolved Revised Total Coliform Rule violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 41
Key facts
- Town of West Yellowstone draws water from 2 wells and 1 spring.
- Record on file since 1993, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 59 unknown out of 832 service lines.
Check whether Town of West Yellowstone 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
Treatment technique failure
|
110 | Oct 17, 2016 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Fluoride
Monitoring and reporting
|
Jul 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Arsenic
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
E. coli
Monitoring and reporting
|
Aug 28, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
E. coli
Monitoring and reporting
|
Dec 7, 2017 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Chlordane
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
LASSO
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Picloram
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Simazine
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Endrin
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
|
E. coli
Monitoring and reporting
|
May 16, 2017 | Resolved |
|
Arsenic
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
|
Fluoride
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Fluoride
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Arsenic
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2016 | Resolved |
Full record since 1993
EPA's records for Town of West Yellowstone go back to 1993. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 50 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 4 |
| 2000s | 0 | 32 |
| 2010 to October 18, 2016 | 1 | 14 |
| October 19, 2016 to 2019 | 0 | 35 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Revised Total Coliform Rule, began October 2016, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
Treatment technique failure
|
Oct 17, 2016 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 1995 | Resolved |
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
Where the water comes from
Town of West Yellowstone draws water from 2 wells and 1 spring. 1 smaller public system such as schools, businesses or campgrounds buys water from Town of West Yellowstone.
Annual water quality report
Town of West Yellowstone 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.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
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