F0/100
SISTERS, CITY OF — Water Quality Report 2026
Serving 3,778 people · Oregon
Water Source
Groundwater
County
—
System ID
OR4100826
Violations
113
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2015.
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 SISTERS, CITY OF
Is SISTERS, CITY OF water safe to drink?
SISTERS, CITY OF water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 113 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has SISTERS, CITY OF detected?
1 contaminants were tested in SISTERS, CITY OF's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does SISTERS, CITY OF have any EPA violations?
Yes, SISTERS, CITY OF has 113 EPA violation(s) on record, with the most recent in 2015. Violation types include MR, TT. 1 are health-based violations.
How many people does SISTERS, CITY OF serve?
SISTERS, CITY OF serves approximately 3,778 people, Oregon.
What type of water does SISTERS, CITY OF provide?
SISTERS, CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OR4100826.
How does SISTERS, CITY OF compare to other utilities in Oregon?
SISTERS, 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.