C42/100
SUMAS WATER DEPT — Water Quality Report 2026
Serving 1,740 people · Washington
Water Source
Groundwater
County
—
System ID
WA5384870
Violations
38
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2013.
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 SUMAS WATER DEPT
Is SUMAS WATER DEPT water safe to drink?
SUMAS WATER DEPT water receives a grade of C (42/100), which is considered fair. 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 SUMAS WATER DEPT detected?
1 contaminants were tested in SUMAS WATER DEPT's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does SUMAS WATER DEPT have any EPA violations?
Yes, SUMAS WATER DEPT has 38 EPA violation(s) on record, with the most recent in 2013. Violation types include Other, MR, MCL. 5 are health-based violations.
How many people does SUMAS WATER DEPT serve?
SUMAS WATER DEPT serves approximately 1,740 people, Washington.
What type of water does SUMAS WATER DEPT provide?
SUMAS WATER DEPT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5384870.
How does SUMAS WATER DEPT compare to other utilities in Washington?
SUMAS WATER DEPT scores 42/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Washington state page for a full comparison of water systems.