D23/100
ISLAND CITY — Water Quality Report 2026
Serving 1,166 people · Oregon
Water Source
Groundwater
County
—
System ID
OR4100454
Violations
57
Contaminant Test Results
EPA Violation History
8
Violations (last 5yr)
3
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: October 1, 2024 – September 17, 2025Enforcement: Resolving — corrective action underway
TIER 3Resolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – December 31, 2024Enforcement: Resolving — corrective action underway
TIER 3Resolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – December 31, 2024Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: October 1, 2023 – September 17, 2025Enforcement: Resolving — corrective action underway
TIER 3Resolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2022 – October 21, 2022Rule: Ground Water 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 ISLAND CITY
Is ISLAND CITY water safe to drink?
ISLAND CITY water receives a grade of D (23/100), which is considered poor. 0 contaminant(s) exceed EPA legal limits and 57 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has ISLAND CITY detected?
1 contaminants were tested in ISLAND CITY's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does ISLAND CITY have any EPA violations?
Yes, ISLAND CITY has 57 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, MON. 5 are health-based violations.
How many people does ISLAND CITY serve?
ISLAND CITY serves approximately 1,166 people, Oregon.
What type of water does ISLAND CITY provide?
ISLAND CITY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OR4100454.
How does ISLAND CITY compare to other utilities in Oregon?
ISLAND CITY scores 23/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Oregon state page for a full comparison of water systems.