Water Quality in Hauppauge, NY (11743)
EPA violation data for public water systems serving ZIP code 11743.
No Health-Based Violations
None of the 11 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are7 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 60% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
43,490
Population
11
Water Systems
7
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (11)
Suffolk County Water Authority
Dix Hills Water District
All resolvedCamp Wayne For Boys
All resolvedFiddlers Green Beach Assoc.
Caumsett State Park
Atlantic Motor Inn
Lloyd Neck Bath Club
West Neck Beach
Millbrooke Office Center
Lloyd Harbor Village Beach
Loon Lake Cottages
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
At high levels, nitrate can cause blue baby syndrome in infants.
Similar to nitrate — harmful to infants at high levels.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
Hauppauge (11743) has more violations than 60% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 7, most of which are monitoring/reporting issues.
Water Filter Recommendations
No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.