F0/100
GUERNSEY, TOWN OF — Water Quality Report 2026
Serving 1,157 people · Wyoming
Water Source
Groundwater
County
—
System ID
WY5600023
Violations
79
Contaminant Test Results
EPA Violation History
3
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: March 1, 2025 – March 31, 2025Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – January 31, 2024Rule: Total Coliform RuleEnforcement: 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 GUERNSEY, TOWN OF
Is GUERNSEY, TOWN OF water safe to drink?
GUERNSEY, TOWN OF water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 79 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has GUERNSEY, TOWN OF detected?
1 contaminants were tested in GUERNSEY, TOWN OF's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does GUERNSEY, TOWN OF have any EPA violations?
Yes, GUERNSEY, TOWN OF has 79 EPA violation(s) on record, with the most recent in 2025. Violation types include MON, MR, MCL. 9 are health-based violations.
How many people does GUERNSEY, TOWN OF serve?
GUERNSEY, TOWN OF serves approximately 1,157 people, Wyoming. The system provides water to 1 community: Guernsey.
What type of water does GUERNSEY, TOWN OF provide?
GUERNSEY, TOWN OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WY5600023.
How does GUERNSEY, TOWN OF compare to other utilities in Wyoming?
GUERNSEY, TOWN OF scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Wyoming state page for a full comparison of water systems.