A100/100
FAIRFAX COUNTY WATER AUTHORITY — Water Quality Report 2026
Serving 1,121,613 people · Virginia
Water Source
Surface Water
County
—
System ID
VA6059501
Violations
0
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
This system has a clean compliance history.
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 FAIRFAX COUNTY WATER AUTHORITY
Is FAIRFAX COUNTY WATER AUTHORITY water safe to drink?
FAIRFAX COUNTY WATER AUTHORITY water receives a grade of A (100/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has FAIRFAX COUNTY WATER AUTHORITY detected?
76 contaminants were tested in FAIRFAX COUNTY WATER AUTHORITY's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does FAIRFAX COUNTY WATER AUTHORITY have any EPA violations?
No, FAIRFAX COUNTY WATER AUTHORITY has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does FAIRFAX COUNTY WATER AUTHORITY serve?
FAIRFAX COUNTY WATER AUTHORITY serves approximately 1,121,613 people, Virginia.
What type of water does FAIRFAX COUNTY WATER AUTHORITY provide?
FAIRFAX COUNTY WATER AUTHORITY 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 VA6059501.
How does FAIRFAX COUNTY WATER AUTHORITY compare to other utilities in Virginia?
FAIRFAX COUNTY WATER AUTHORITY scores 100/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Virginia state page for a full comparison of water systems.