C55/100
WEST SLOPE WATER DISTRICT — Water Quality Report 2026
Serving 11,000 people · Oregon
Water Source
Purchased Surface Water
County
—
System ID
OR4100660
Violations
22
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.005 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – June 28, 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 WEST SLOPE WATER DISTRICT
Is WEST SLOPE WATER DISTRICT water safe to drink?
WEST SLOPE WATER DISTRICT water receives a grade of C (55/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 22 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has WEST SLOPE WATER DISTRICT detected?
69 contaminants were tested in WEST SLOPE WATER DISTRICT's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does WEST SLOPE WATER DISTRICT have any EPA violations?
Yes, WEST SLOPE WATER DISTRICT has 22 EPA violation(s) on record, with the most recent in 2023. Violation types include Other, TT, MON. 5 are health-based violations.
How many people does WEST SLOPE WATER DISTRICT serve?
WEST SLOPE WATER DISTRICT serves approximately 11,000 people, Oregon.
What type of water does WEST SLOPE WATER DISTRICT provide?
WEST SLOPE WATER DISTRICT sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is OR4100660.
How does WEST SLOPE WATER DISTRICT compare to other utilities in Oregon?
WEST SLOPE WATER DISTRICT 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.