Casper, Wyoming Water Quality Report
Water quality data for 15 water systems serving 66,784 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 56.7 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 567% | Above guideline |
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Compliance & Violations
Active Violations (6)
71
Jul 1, 2025
52
Jul 1, 2023
72
Oct 1, 2020
72
Oct 1, 2020
72
Oct 1, 2019
5A
Jul 16, 2017
Resolved Violations (494)
3A
Nov 1, 2024 — Nov 30, 2024
36
Nov 1, 2024 — Nov 30, 2024
36
Oct 1, 2024 — Oct 31, 2024
3A
Oct 1, 2024 — Oct 31, 2024
71
Jul 1, 2024
+ 489 more resolved violations
Frequently Asked Questions
Is Casper tap water safe to drink?
Casper's water meets all EPA maximum contaminant levels. However, 1 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Casper tap water?
1 contaminants have been detected in Casper's water supply across 15 water systems. See the full contaminant table above for details.
How can I improve my water quality in Casper?
Install a water filter rated for the specific contaminants found in Casper's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Casper have any water quality violations?
Yes, Casper currently has 26 active violations. See the violations section above for details.