TapSafetyReport
C53/100

MONMOUTH, CITY OF — Water Quality Report 2026

Serving 11,651 people · Oregon

Water Source
Groundwater Under Influence of Surface Water
County
—
System ID
OR4100537
Violations
23

Contaminant Test Results

1 contaminant above EPA health goals
ContaminantDetectedLimit (MCL)Status
Copper (90th percentile)
2.58 mg/L1.30 mg/LOver Limit

EPA Violation History

6

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: January 1, 2023 – March 31, 2023Rule: 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: January 1, 2023 – March 31, 2023Rule: Stage 2 DBPREnforcement: 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, 2021 – August 31, 2021Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Violation related to Coliform (pre-2016 TCR)

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

When: August 1, 2021 – August 31, 2021Rule: 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: August 1, 2021 – August 31, 2021Rule: 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: July 1, 2021 – October 7, 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 MONMOUTH, CITY OF

Is MONMOUTH, CITY OF water safe to drink?

MONMOUTH, CITY OF water receives a grade of C (53/100), which is considered fair. 1 contaminant(s) exceed EPA legal limits and 23 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has MONMOUTH, CITY OF detected?

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

Does MONMOUTH, CITY OF have any EPA violations?

Yes, MONMOUTH, CITY OF has 23 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, MON, TT. 4 are health-based violations.

How many people does MONMOUTH, CITY OF serve?

MONMOUTH, CITY OF serves approximately 11,651 people, Oregon.

What type of water does MONMOUTH, CITY OF provide?

MONMOUTH, CITY OF sources its water from groundwater under influence of surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is OR4100537.

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

MONMOUTH, CITY OF scores 53/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Oregon state page for a full comparison of water systems.