Apr 15, 2026 · 7 min read
PFAS "Forever Chemicals" in US Drinking Water: 2026 Update
PFAS contamination affects an estimated 200 million Americans. Here's what the latest EPA enforcement means for your tap water.
ZIP Code 18106 Water Quality
Pennsylvania · 173,599 people served · 13 water systems
A
ExcellentZIP code 18106 is in Pennsylvania and is a mid-sized community from a drinking-water-service perspective, with 173,599 people served by 13 EPA-registered public water systems. It corresponds to ALLENTOWN.
Within ZIP code 18106, the EPA Safe Drinking Water Information System (SDWIS) records no health-based Maximum Contaminant Level (MCL) exceedances during the past five years across the 13 water systems serving this postal area.
Last updated: 2026-05-18 · Source: EPA SDWIS
ZIP Code Location
Loading map...
Cities in ZIP 18106
Water Systems Serving 18106
LCA EMMAUS CONSECUTIVE DIV
PWSID: PA3390075
1,046 served
LCA ALLENTOWN DIVISION
PWSID: PA3390024
118,000 served
LCA WASHINGTON TOWNSHIP DIV
PWSID: PA3390078
965 served
LCA MILL CREEK DIVISION
PWSID: PA3390080
88 served
LCA PINE LAKES DIVISION
PWSID: PA3390085
158 served
LCA CLEARVIEW FARM ESTATES DIV
PWSID: PA3480028
170 served
LCA WLSA CENTRAL DIVISION
PWSID: PA3390073
47,693 served
LCA UPPER MILFORD CENTRAL DIV
PWSID: PA3390076
256 served
LCA HEIDELBERG HEIGHTS DIV
PWSID: PA3390047
509 served
LCA NORTH WHITEHALL DIVISION
PWSID: PA3390055
2,910 served
LCA BEVERLY HILLS DIVISION
PWSID: PA3390035
122 served
LCA ARCADIA WEST DIVISION
PWSID: PA3391001
1,392 served
LCA MADISON NORTH DIVISION
PWSID: PA3390115
290 served
About ZIP-code water data
Postal-code level water quality data is built up from the underlying water systems — multiple ZIPs may share a single utility, and a single ZIP can span multiple utilities. For property-level information, contact the specific utility serving your address. EPA data on this page was last refreshed on 2026-05-18.
From the Blog
Photo by Bluewater Sweden on Unsplash
Mar 22, 2026 · 6 min read
How to Read Your Annual Water Quality Report (CCR)
Your water utility is legally required to send you a Consumer Confidence Report every year. Here's how to actually understand it.
Photo by Louis Hansel on Unsplash
Mar 5, 2026 · 9 min read
Lead in Tap Water: The Complete 2026 Guide
Lead enters drinking water through old pipes and fixtures. Here's how to identify your risk and what to do about it.
Photo by Eduardo Casajús Gorostiaga on Unsplash
Feb 18, 2026 · 5 min read
What Is an EPA Maximum Contaminant Level (MCL)?
MCLs are the foundation of US drinking water safety. Here's how they're set and what they mean for your tap.
Photo by Naja Bertolt Jensen on Unsplash
