TapSafetyReport
F0/100

UMATILLA, CITY OF — Water Quality Report 2026

Serving 8,256 people · Oregon

Water Source
Groundwater
County
—
System ID
OR4100914
Violations
107

Contaminant Test Results

EPA Violation History

6

Violations (last 5yr)

0

Unresolved

0

Health-Related

TIER 3Resolved

Failed to conduct Level 1 Assessment

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

When: August 16, 2025 – August 18, 2025Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Surface water treatment technique failure

When: July 1, 2025 – August 8, 2025Enforcement: 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, 2025 – February 28, 2025Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Surface water treatment technique failure

When: July 1, 2024 – July 26, 2024Enforcement: 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: March 1, 2024 – March 31, 2024Rule: Total Coliform 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: October 1, 2021 – October 31, 2021Rule: 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 UMATILLA, CITY OF

Is UMATILLA, CITY OF water safe to drink?

UMATILLA, CITY OF water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 107 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has UMATILLA, CITY OF detected?

31 contaminants were tested in UMATILLA, CITY OF's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.

Does UMATILLA, CITY OF have any EPA violations?

Yes, UMATILLA, CITY OF has 107 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, Other, MON. 1 are health-based violations.

How many people does UMATILLA, CITY OF serve?

UMATILLA, CITY OF serves approximately 8,256 people, Oregon.

What type of water does UMATILLA, CITY OF provide?

UMATILLA, CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OR4100914.

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

UMATILLA, 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.