YNP-OLD FAITHFUL
Wyoming — Community Water System — PWSID: WY5680085
System Information
| PWSID | WY5680085 |
| System Name | YNP-OLD FAITHFUL |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Federal |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 2, 1981 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | Wyoming |
| City | YELLOWSTONE |
| ZIP Code | 82190 |
| Address | P.O. Box 168 |
| Organization | RAUCH, SEAN |
| Phone | 307-250-2403 |
Population & Service
| Population Served | 7,675 |
| Service Connections | 153 |
Drinking Water Violations (27)
This water system has 27 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2024 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Mar 6, 2025 | Lead and Copper Rule |
| Jul 1, 2024 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Mar 6, 2025 | Lead and Copper Rule |
| Jun 1, 2024 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | May 1, 2025 | Lead and Copper Rule |
| Mar 1, 2024 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | May 1, 2025 | Lead and Copper Rule |
| Dec 30, 2023 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Feb 3, 2024 | Lead and Copper Rule |
| Nov 30, 2023 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Mar 10, 2025 | Lead and Copper Rule |
| Oct 1, 2023 | Dec 31, 2023 | Arsenic | MCL | Yes | No | .012 MG/L | 0.010 mg/L | — | Resolved | Dec 31, 2023 | Arsenic Rule |
| Oct 1, 2023 | Dec 31, 2023 | Arsenic | MCL | Yes | No | .012 MG/L | 0.010 mg/L | — | Resolved | Dec 31, 2023 | Arsenic Rule |
| Oct 1, 2023 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 1, 2025 | Lead and Copper Rule |
| Oct 1, 2023 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 1, 2025 | Lead and Copper Rule |
| Jul 1, 2023 | Sep 30, 2023 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Sep 30, 2023 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2023 | Sep 30, 2023 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Sep 30, 2023 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2023 | Sep 30, 2023 | Arsenic | MCL | Yes | No | .012 MG/L | 0.010 mg/L | — | Resolved | Sep 30, 2023 | Arsenic Rule |
| Jul 1, 2023 | Sep 30, 2023 | Arsenic | MCL | Yes | No | .012 MG/L | 0.010 mg/L | — | Resolved | Sep 30, 2023 | Arsenic Rule |
| Apr 1, 2023 | Jun 30, 2023 | Arsenic | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2023 | Arsenic Rule |
| Apr 1, 2023 | Jun 30, 2023 | Arsenic | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2023 | Arsenic Rule |
| Sep 17, 2022 | — | Long Term 2 Enhanced Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Oct 16, 2024 | Long Term 2 Enhanced Surface Water Treatment Rule |
| Sep 17, 2022 | — | Long Term 2 Enhanced Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Oct 16, 2024 | Long Term 2 Enhanced Surface Water Treatment Rule |
| Jun 1, 2022 | Jun 30, 2022 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Jun 30, 2022 | Interim and Long Term 1 Enhanced Surface Water Treatment Rule |
| Apr 1, 2022 | Apr 30, 2022 | Surface Water Treatment Rule | MR | No | Yes | — | — | — | Resolved | Apr 30, 2022 | Surface Water Treatment Rule |
| Apr 1, 2022 | Apr 30, 2022 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Apr 30, 2022 | Revised Total Coliform Rule |
| Jan 1, 2020 | Mar 31, 2020 | Arsenic | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2020 | Arsenic Rule |
| Jan 1, 2016 | Mar 31, 2016 | Arsenic | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2016 | Arsenic Rule |
| Jan 1, 2016 | Mar 31, 2016 | Arsenic | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2016 | Arsenic Rule |
| Jan 1, 2016 | Mar 31, 2016 | Arsenic | MCL | Yes | No | .011 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2016 | Arsenic Rule |
| Jan 1, 2005 | Mar 31, 2005 | CARBON, TOTAL | MR | No | Yes | — | TT | — | Resolved | Mar 31, 2005 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2005 | Mar 31, 2005 | CARBON, TOTAL | MR | No | Yes | — | TT | — | Resolved | Mar 31, 2005 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.