C55/100
GRANTS PASS, CITY OF — Water Quality Report 2026
Serving 37,138 people · Oregon
Water Source
Surface Water
County
—
System ID
OR4100342
Violations
42
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 390.00 µg/L | — | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2025 – July 22, 2025Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – August 6, 2024Enforcement: 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 GRANTS PASS, CITY OF
Is GRANTS PASS, CITY OF water safe to drink?
GRANTS PASS, CITY OF water receives a grade of C (55/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 42 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has GRANTS PASS, CITY OF detected?
69 contaminants were tested in GRANTS PASS, CITY OF's water. Notable contaminants include chlorate. No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does GRANTS PASS, CITY OF have any EPA violations?
Yes, GRANTS PASS, CITY OF has 42 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR.
How many people does GRANTS PASS, CITY OF serve?
GRANTS PASS, CITY OF serves approximately 37,138 people, Oregon.
What type of water does GRANTS PASS, CITY OF provide?
GRANTS PASS, 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 OR4100342.
How does GRANTS PASS, CITY OF compare to other utilities in Oregon?
GRANTS PASS, CITY OF scores 55/100 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.