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SUFFOLK COUNTY WATER AUTHORITY

Serving 1 city in NY

Safe
1 MCL violation recorded
1100K
People Served
1
City
1
Water Sources
1
MCL Violations

Official SUFFOLK COUNTY WATER AUTHORITY Resources

SUFFOLK COUNTY WATER AUTHORITY Service Area

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Service Area

This map shows the approximate service area for SUFFOLK COUNTY WATER AUTHORITY. Actual coverage may vary. Contact the utility directly to confirm service availability at your address.

SUFFOLK COUNTY WATER AUTHORITY Water Quality Grade

B
Good

Water quality is good with minor concerns.

Quality Score80/100
0
Above Health Guidelines
1
EPA Violations

Grade is calculated based on contaminants exceeding health guidelines (MCLG) and EPA Maximum Contaminant Level violations. A = Excellent (90-100), B = Good (80-89), C = Fair (70-79), D = Poor (60-69), F = Failing (<60).

Is SUFFOLK COUNTY WATER AUTHORITY Water Safe to Drink?

SUFFOLK COUNTY WATER AUTHORITY water currently meets all EPA Maximum Contaminant Level Goals (MCLGs) across all cities served. Water quality testing shows all contaminants are within safe levels according to health-based guidelines.

This utility serves 1,100,000 people across 1 city in NY. Water quality can vary by location within the service area. Check individual city pages below for detailed contaminant data specific to your area.

SUFFOLK COUNTY WATER AUTHORITY Service Area

SUFFOLK COUNTY WATER AUTHORITY Contact & Information

Emergency Line

1-800-342-3377

24/7 After-Hours

Mailing Address

P.O. Box 18043 Hauppauge, NY 11788

Water Sources & Treatment

Water Sources

Groundwater

Treatment Methods

filtrationionic exchangeno treatment

Disinfectant Used

hypochlorite, other

SUFFOLK COUNTY WATER AUTHORITY Annual Water Quality Reports

2026 Water Quality Report
Latest Consumer Confidence Report (CCR)
View Report

Historical reports are being compiled. Check back soon for archived water quality data.

What is a CCR? The Consumer Confidence Report (CCR) is an annual water quality report that water utilities are required by the EPA to provide to customers. It contains information about your water source, detected contaminants, and compliance status.

EPA Violations

1 Maximum Contaminant Level Violation

This utility has recorded MCL violations, indicating contaminant levels exceeded federal legal limits. These violations are aggregated across all cities served.

Check individual city reports for specific violation details and current status.

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