A82/100
EVANSTON, CITY OF — Water Quality Report 2026
Serving 12,000 people · Wyoming
Water Source
Surface Water
County
—
System ID
WY5600150
Violations
3
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1997.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About EVANSTON, CITY OF
Is EVANSTON, CITY OF water safe to drink?
EVANSTON, CITY OF water receives a grade of A (82/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has EVANSTON, CITY OF detected?
69 contaminants were tested in EVANSTON, CITY OF's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does EVANSTON, CITY OF have any EPA violations?
Yes, EVANSTON, CITY OF has 3 EPA violation(s) on record, with the most recent in 1997. Violation types include MCL. 3 are health-based violations.
How many people does EVANSTON, CITY OF serve?
EVANSTON, CITY OF serves approximately 12,000 people, Wyoming. The system provides water to 1 community: Evanston.
What type of water does EVANSTON, CITY OF provide?
EVANSTON, CITY OF sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is WY5600150.
How does EVANSTON, CITY OF compare to other utilities in Wyoming?
EVANSTON, CITY OF scores 82/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Wyoming state page for a full comparison of water systems.