A88/100
GREEN RIVER, CITY OF — Water Quality Report 2026
Serving 10,500 people · Wyoming
Water Source
Purchased Surface Water
County
—
System ID
WY5601181
Violations
5
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: March 1, 2022 – May 31, 2022Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: March 1, 2022 – May 31, 2022Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
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 GREEN RIVER, CITY OF
Is GREEN RIVER, CITY OF water safe to drink?
GREEN RIVER, CITY OF water receives a grade of A (88/100), 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 GREEN RIVER, CITY OF detected?
69 contaminants were tested in GREEN RIVER, CITY OF's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does GREEN RIVER, CITY OF have any EPA violations?
Yes, GREEN RIVER, CITY OF has 5 EPA violation(s) on record, with the most recent in 2022. Violation types include MR, MCL. 1 are health-based violations.
How many people does GREEN RIVER, CITY OF serve?
GREEN RIVER, CITY OF serves approximately 10,500 people, Wyoming. The system provides water to 1 community: Green River.
What type of water does GREEN RIVER, CITY OF provide?
GREEN RIVER, CITY OF sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is WY5601181.
How does GREEN RIVER, CITY OF compare to other utilities in Wyoming?
GREEN RIVER, CITY OF scores 88/100 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.