Water Quality in Allentown, PA (18109)
EPA violation data for public water systems serving ZIP code 18109.
No Health-Based Violations
None of the 10 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are17 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 76% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
18,446
Population
10
Water Systems
17
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (10)
Lca Allentown Division
All resolvedCity Of Bethlehem
All resolvedEaston Area Water System
Easton Suburban Water Auth
Lca Wlsa Central Division
Northampton Boro Muni Auth
All resolvedHanover Township Lehigh County
Fogelsville Shell
Feasta Italiana
Lowhill Corporate Center
Contaminants Found
At high levels, nitrate can cause blue baby syndrome in infants.
Similar to nitrate — harmful to infants at high levels.
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jun 2025
How Does This Compare?
Allentown (18109) has more violations than 76% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 17, 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.