GREYBULL, WY · Big Horn County
GREYBULL, TOWN OF Water System
Current status
1 item on record is open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Wyoming’s official records. Always confirm current status with Wyoming before making decisions based on this information.
System facts
- System ID (PWSID)
- WY5600022
- System type
- Community Water System
- Population served
- 3,260
- Service connections
- 1,325
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Follow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
October 1, 2025
UnaddressedMonitoring, Regular
—Nitrate-Nitrite
January 1, 2024 – December 31, 2024
ResolvedMonitoring, Regular
—Combined Radium (-226 and -228)
January 1, 2022 – December 31, 2024
ResolvedMonitoring, Regular
—Combined Uranium
January 1, 2022 – December 31, 2024
ArchivedMonitoring, Regular
—Combined Radium (-226 and -228)
January 1, 2022 – December 31, 2024
ArchivedMonitoring, Regular
—Radium-226
January 1, 2022 – December 31, 2024
ArchivedMonitoring, Regular
—Radium-228
January 1, 2022 – December 31, 2024
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
January 1, 2022 – December 31, 2024
ResolvedMonitoring and Reporting (DBP)
—TTHM
September 1, 2018 – August 31, 2019
ResolvedMonitoring, Regular
—Atrazine
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Heptachlor
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—HEXACHLOROBENZENE
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Toxaphene
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Dalapon
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Diquat
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Endothall
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Glyphosate
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) adipate
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Simazine
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Picloram
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Dinoseb
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Hexachlorocyclopentadiene
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Carbofuran
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Atrazine
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Heptachlor
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Heptachlor epoxide
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—2,4-D
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—2,4,5-TP
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—HEXACHLOROBENZENE
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Benzo(a)pyrene
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—ETHYLENE DIBROMIDE
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Chlordane
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—LASSO
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Endrin
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—BHC-GAMMA
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Methoxychlor
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Toxaphene
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) adipate
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—OXAMYL
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Hexachlorocyclopentadiene
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Carbofuran
January 1, 2017 – December 31, 2019
ResolvedMonitoring, Regular
—Radium-226
January 1, 2000 – December 31, 2000
Resolved
Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 1, 2025 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Unaddressed |
| January 1, 2024 – December 31, 2024 | Monitoring, Regular | Nitrate-Nitrite | — | Resolved |
| January 1, 2022 – December 31, 2024 | Monitoring, Regular | Combined Radium (-226 and -228) | — | Resolved |
| January 1, 2022 – December 31, 2024 | Monitoring, Regular | Combined Uranium | — | Archived |
| January 1, 2022 – December 31, 2024 | Monitoring, Regular | Combined Radium (-226 and -228) | — | Archived |
| January 1, 2022 – December 31, 2024 | Monitoring, Regular | Radium-226 | — | Archived |
| January 1, 2022 – December 31, 2024 | Monitoring, Regular | Radium-228 | — | Archived |
| January 1, 2022 – December 31, 2024 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Resolved |
| September 1, 2018 – August 31, 2019 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Atrazine | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Heptachlor | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | HEXACHLOROBENZENE | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | 1,2-DIBROMO-3-CHLOROPROPANE | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Toxaphene | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Dalapon | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Diquat | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Endothall | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Glyphosate | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Di(2-ethylhexyl) adipate | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Simazine | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Picloram | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Dinoseb | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Hexachlorocyclopentadiene | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Carbofuran | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Atrazine | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Heptachlor | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Heptachlor epoxide | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | 2,4-D | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | 2,4,5-TP | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | HEXACHLOROBENZENE | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Benzo(a)pyrene | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | ETHYLENE DIBROMIDE | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Chlordane | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | LASSO | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Endrin | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | BHC-GAMMA | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Methoxychlor | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Toxaphene | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Di(2-ethylhexyl) adipate | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | OXAMYL | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Hexachlorocyclopentadiene | — | Resolved |
| January 1, 2017 – December 31, 2019 | Monitoring, Regular | Carbofuran | — | Resolved |
| January 1, 2000 – December 31, 2000 | Monitoring, Regular | Radium-226 | — | Resolved |
Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- March 2, 2001State Compliance achieved11 linked violations
Contact
NORTON, DAWN
307-765-9431
GREYBULL, WY 82426