TapSafetyReport
F8/100

UMPQUA BASIN WATER ASSOC — Water Quality Report 2026

Serving 9,499 people · Oregon

Water Source
Surface Water
County
—
System ID
OR4100719
Violations
76

Contaminant Test Results

1 contaminant above EPA health goals
ContaminantDetectedLimit (MCL)Status
Lead (90th percentile)
0.035 mg/L0.015 mg/LOver Limit

EPA Violation History

8

Violations (last 5yr)

6

Unresolved

1

Health-Related

TIER 3Unresolved

Missed required monitoring deadline

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

When: August 1, 2025 – August 31, 2025Rule: Surface Water Treatment RuleVerify on EPA.gov
TIER 3Unresolved

Missed required monitoring deadline

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

When: July 1, 2025 – July 31, 2025Rule: Surface Water Treatment RuleVerify on EPA.gov
TIER 3Unresolved

Missed required monitoring deadline

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

When: June 1, 2025 – June 30, 2025Rule: Surface Water Treatment RuleVerify on EPA.gov
TIER 3Unresolved

Missed required monitoring deadline

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

When: May 1, 2025 – May 31, 2025Rule: Surface Water Treatment RuleVerify on EPA.gov
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: July 1, 2024 – July 31, 2024Rule: Surface Water Treatment RuleEnforcement: 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: July 1, 2024 – July 31, 2024Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved

Disinfection byproduct treatment technique failure

When: May 30, 2024Rule: Ground Water RuleVerify on EPA.gov
TIER 2Unresolved

Consumer confidence report — content deficiency

When: April 1, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov

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 UMPQUA BASIN WATER ASSOC

Is UMPQUA BASIN WATER ASSOC water safe to drink?

UMPQUA BASIN WATER ASSOC water receives a grade of F (8/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 76 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has UMPQUA BASIN WATER ASSOC detected?

31 contaminants were tested in UMPQUA BASIN WATER ASSOC's water. Notable contaminants include Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).

Does UMPQUA BASIN WATER ASSOC have any EPA violations?

Yes, UMPQUA BASIN WATER ASSOC has 76 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, Other, TT. 2 are health-based violations.

How many people does UMPQUA BASIN WATER ASSOC serve?

UMPQUA BASIN WATER ASSOC serves approximately 9,499 people, Oregon.

What type of water does UMPQUA BASIN WATER ASSOC provide?

UMPQUA BASIN WATER ASSOC 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 OR4100719.

How does UMPQUA BASIN WATER ASSOC compare to other utilities in Oregon?

UMPQUA BASIN WATER ASSOC scores 8/100 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.