Yellowstone National Park, Wyoming Water Quality Report
Water quality data for 1 water system serving 2,600 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Resolved Violations (14)
36
Aug 1, 2023 — Aug 31, 2023
36
Aug 1, 2023 — Aug 31, 2023
27
Jun 1, 2017 — May 31, 2018
27
Jun 1, 2017 — May 31, 2018
24
Sep 1, 2013 — Sep 30, 2013
+ 9 more resolved violations
Frequently Asked Questions
Is Yellowstone National Park tap water safe to drink?
Yellowstone National Park's water meets all EPA maximum contaminant levels. However, 0 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Yellowstone National Park tap water?
0 contaminants have been detected in Yellowstone National Park's water supply across 1 water system. See the full contaminant table above for details.
How can I improve my water quality in Yellowstone National Park?
Install a water filter rated for the specific contaminants found in Yellowstone National Park's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.