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F0/100

COQUILLE, CITY OF — Water Quality Report 2026

Serving 3,953 people · Oregon

Water Source
Surface Water
County
—
System ID
OR4100213
Violations
224

Contaminant Test Results

2 contaminants above EPA health goals
ContaminantDetectedLimit (MCL)Status
Copper (90th percentile)
1.38 mg/L1.30 mg/LOver Limit
Lead (90th percentile)
0.004 mg/L0.015 mg/LAbove Goal

EPA Violation History

24

Violations (last 5yr)

0

Unresolved

0

Health-Related

TIER 3Resolved

Consumer confidence report — inadequate or unavailable

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2025 – September 3, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Surface water treatment technique failure

When: October 1, 2023 – October 16, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to complete routine monitoring

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 1, 2023 – October 31, 2023Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to complete routine monitoring

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 1, 2023 – October 31, 2023Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Missed required monitoring deadline

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 1, 2023 – October 31, 2023Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to complete routine monitoring

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: August 1, 2023 – August 31, 2023Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to complete routine monitoring

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: August 1, 2023 – August 31, 2023Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Missed required monitoring deadline

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: August 1, 2023 – August 31, 2023Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Surface water treatment technique failure

When: July 1, 2023 – July 18, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved

Consumer confidence report — inadequate or unavailable

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2023 – October 6, 2023Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Consumer confidence report — inadequate or unavailable

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2023 – December 4, 2023Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to complete routine monitoring

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: June 1, 2023 – June 30, 2023Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to complete routine monitoring

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: June 1, 2023 – June 30, 2023Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Missed required monitoring deadline

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: June 1, 2023 – June 30, 2023Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Monitoring Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: February 1, 2023 – February 28, 2023Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Consumer confidence report — inadequate or unavailable

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: January 1, 2023 – August 7, 2023Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to complete routine monitoring

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: September 1, 2022 – September 30, 2022Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to complete routine monitoring

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: September 1, 2022 – September 30, 2022Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Missed required monitoring deadline

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: September 1, 2022 – September 30, 2022Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Consumer confidence report — inadequate or unavailable

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2022 – November 9, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to complete routine monitoring

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: September 1, 2021 – September 30, 2021Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Missed required monitoring deadline

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: September 1, 2021 – September 30, 2021Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to complete routine monitoring

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: September 1, 2021 – September 30, 2021Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Consumer confidence report — inadequate or unavailable

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2021 – November 5, 2021Rule: 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 COQUILLE, CITY OF

Is COQUILLE, CITY OF water safe to drink?

COQUILLE, CITY OF water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 224 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has COQUILLE, CITY OF detected?

52 contaminants were tested in COQUILLE, CITY OF's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).

Does COQUILLE, CITY OF have any EPA violations?

Yes, COQUILLE, CITY OF has 224 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, Other, MON. 16 are health-based violations.

How many people does COQUILLE, CITY OF serve?

COQUILLE, CITY OF serves approximately 3,953 people, Oregon.

What type of water does COQUILLE, CITY OF provide?

COQUILLE, 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 OR4100213.

How does COQUILLE, CITY OF compare to other utilities in Oregon?

COQUILLE, CITY OF scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Oregon state page for a full comparison of water systems.