D38/100
LA GRANDE, CITY OF — Water Quality Report 2026
Serving 13,460 people · Oregon
Water Source
Groundwater
County
—
System ID
OR4100453
Violations
38
Contaminant Test Results
EPA Violation History
2
Violations (last 5yr)
0
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: September 1, 2024 – September 30, 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: December 1, 2022 – December 31, 2022Rule: 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 LA GRANDE, CITY OF
Is LA GRANDE, CITY OF water safe to drink?
LA GRANDE, CITY OF water receives a grade of D (38/100), which is considered poor. 0 contaminant(s) exceed EPA legal limits and 38 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has LA GRANDE, CITY OF detected?
66 contaminants were tested in LA GRANDE, CITY OF's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does LA GRANDE, CITY OF have any EPA violations?
Yes, LA GRANDE, CITY OF has 38 EPA violation(s) on record, with the most recent in 2024. Violation types include MON, MR, MCL. 6 are health-based violations.
How many people does LA GRANDE, CITY OF serve?
LA GRANDE, CITY OF serves approximately 13,460 people, Oregon.
What type of water does LA GRANDE, CITY OF provide?
LA GRANDE, CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OR4100453.
How does LA GRANDE, CITY OF compare to other utilities in Oregon?
LA GRANDE, CITY OF scores 38/100 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.