B68/100
WA OF WESTERN NASSAU — Water Quality Report 2026
Serving 120,000 people · New York
Water Source
Groundwater
County
—
System ID
NY2902830
Violations
6
Contaminant Test Results
4 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOA | 0.010 µg/L | 0.004 µg/L | Over Limit |
PFOS | 0.006 µg/L | 0.004 µg/L | Over Limit |
1,4-dioxane | 10.00 µg/L | — | Above Goal |
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 2018.
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 WA OF WESTERN NASSAU
Is WA OF WESTERN NASSAU water safe to drink?
WA OF WESTERN NASSAU water receives a grade of B (68/100), which is considered good. Out of 73 contaminants tested, 2 exceed EPA legal limits. 4 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has WA OF WESTERN NASSAU detected?
73 contaminants were tested in WA OF WESTERN NASSAU's water. Notable contaminants include PFOA, PFOS, Lead (90th percentile), 1,4-dioxane. 2 exceed EPA legal limits (MCLs). 4 exceed EPA health goals (MCLGs).
Does WA OF WESTERN NASSAU have any EPA violations?
Yes, WA OF WESTERN NASSAU has 6 EPA violation(s) on record, with the most recent in 2018. Violation types include MR, MCL. 1 are health-based violations.
How many people does WA OF WESTERN NASSAU serve?
WA OF WESTERN NASSAU serves approximately 120,000 people, New York. The system provides water to 2 communities: Hempstead (T), North Hempstead (T).
What type of water does WA OF WESTERN NASSAU provide?
WA OF WESTERN NASSAU sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NY2902830.
How does WA OF WESTERN NASSAU compare to other utilities in New York?
WA OF WESTERN NASSAU scores 68/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our New York state page for a full comparison of water systems.