EPA v. Yellowstone National Park- Old Faithful Public Water System

Case summary

The Order addressed several violations identified from September 2022 to present. Violations include arsenic maximum contaminant level (MCL) violations, a Surface Water Treatment Rule Treatment Technique Violation, and a Lead and Copper Rule routine monitoring violation. The Order requires the Respondent to complete the Lead and Copper Sampling; correct the Surface Water Treatment Rule treatment technique violation; reduce the arsenic levels below the MCL; and notify the public of the violations. The Water Division provided the System extensive compliance assistance prior to the SDWA Enforcement Section initiating this enforcement action. The System serves approximately 7675 individuals at least 60 days a year.

Defendants (1)

• National Parks Service- Yellowstone National ParkNamed in complaintNamed in settlement

Facilities (1)

• YNP-OLD FAITHFUL-TREATMENT PLANT

  P.O. BOX 168, YELLOWSTONE, WY, 82190

  Registry ID: 110013028963

Statutes cited

• SDWA 1412/1414 — National Drinking Water Regulations

Enforcement conclusions (1)

• Yellowstone National Park- Old Faithful Public Water Systementered 2024-09-30

  Primary law: SDWA

Timeline (3 milestones)

• 2024-09-30Final Order Issued
• 2024-10-07Enforcement Action Data Entered
• 2025-05-01Enforcement Action Closed