A98/100
WASHINGTON SUBURBAN SANITARY COMMISSION — Water Quality Report 2026
Serving 1,900,000 people · Maryland
Water Source
Surface Water
County
—
System ID
MD0150005
Violations
2
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2007.
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 WASHINGTON SUBURBAN SANITARY COMMISSION
Is WASHINGTON SUBURBAN SANITARY COMMISSION water safe to drink?
WASHINGTON SUBURBAN SANITARY COMMISSION water receives a grade of A (98/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has WASHINGTON SUBURBAN SANITARY COMMISSION detected?
76 contaminants were tested in WASHINGTON SUBURBAN SANITARY COMMISSION's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does WASHINGTON SUBURBAN SANITARY COMMISSION have any EPA violations?
Yes, WASHINGTON SUBURBAN SANITARY COMMISSION has 2 EPA violation(s) on record, with the most recent in 2007. Violation types include MR.
How many people does WASHINGTON SUBURBAN SANITARY COMMISSION serve?
WASHINGTON SUBURBAN SANITARY COMMISSION serves approximately 1,900,000 people, Maryland.
What type of water does WASHINGTON SUBURBAN SANITARY COMMISSION provide?
WASHINGTON SUBURBAN SANITARY COMMISSION 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 MD0150005.
How does WASHINGTON SUBURBAN SANITARY COMMISSION compare to other utilities in Maryland?
WASHINGTON SUBURBAN SANITARY COMMISSION scores 98/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Maryland state page for a full comparison of water systems.