Drinking Water Systems in YELLOWSTONE NP, Wyoming
2 water systems are reported for this city, with a combined service population of 10,275. The systems have 0 EPA violation records in the five-year period ending June 30, 2026.
Water Systems Serving YELLOWSTONE NP
YNP-MAMMOTH HOT SPRINGS
2,600 served2 historical records
A
YNP-OLD FAITHFUL
7,675 served1 historical record
A
EPA Contaminant Categories in Historical Violation Records
Gross Alpha1 record
Radium-2261 record
Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.