Tapcensus

Water quality for ZIP code 18103

ZIP 18103 covers Allentown, Dorneyville, and Wescosville in Lehigh County, Pennsylvania, one of 28 ZIP codes in the county. 203 active public water systems serve the county; 65 had an EPA violation in the past three years.

Most likely your provider

Salisbury Twp Water System PA3390062 · Community water system · Surface water purchased
Serves 8,522 people Rules violated, past 3 years 0 Last sanitary survey May 15, 2026 Distance 1.1 mi

Your location is within the outer bounds of this system's EPA service area.

View system details EPA facility report

Other community water systems in Lehigh County

41 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Aqua PA Country Club Gardens
 268 0 1.6 mi
Lca Allentown Division
 118,000 3 1.7 mi
Lca Emmaus Consecutive Div
 1,046 0 2.0 mi
Emmaus Borough Public Water
 14,000 1 2.5 mi
Aqua PA Maple Hills
 164 0 2.8 mi
Swt Main System
 14,500 4 3.5 mi
Aqua PA Springhouse Farms
 645 0 4.3 mi
Upper Saucon Twp Water Supply
 7,300 1 4.5 mi
Mount Trexler Manor
 90 2 4.8 mi
Hanover Township Lehigh County
 520 0 5.0 mi
Whitehall Twp Authority
 13,063 0 5.1 mi
Macungie Borough Authority
 3,039 0 5.2 mi
Lca Beverly Hills Division
 122 0 5.7 mi
Lca Wlsa Central Division
 47,693 2 5.7 mi
Lca Upper Milford Central Div
 256 0 5.7 mi
Catasauqua Mun Water Works
 6,598 2 5.9 mi
Desales University
 2,000 1 6.3 mi
Valley View Estates
 68 0 6.4 mi
Coopersburg Mun Water Auth
 2,570 1 6.6 mi
Macungie Village MHP
 65 3 6.7 mi
Swt Allentown Cons System
 1,300 0 7.0 mi
Woodside Mobile Home Park
 130 2 7.1 mi
Ossies Mobile Home Community
 40 3 7.2 mi
Alburtis Borough Authority
 2,117 2 7.2 mi
Lil Wolf MHP
 600 0 7.6 mi
All 42 community water systems in Lehigh County
Non-community systems in Lehigh County (161: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Jerusalem Western Salisbury CH
 200 0 0
EC Waldheim Park
 150 0 0
Lehigh CC Halfway House Sys
 200 0 0
LV Hospital Cedar Crest
 8,425 2 2
Lehigh CC Club House System
 500 0 0
Gsep Mountain House Camp
 40 2 0
Grace Community Church
 70 0 0
House & Barn
 100 0 0
Wedgewood Golf Course
 200 0 0
Ethos Clinic
 25 1 1
Elite Sports Academy
 150 0 0
Louies Bakery
 25 1 0
Chestnut Street Plaza
 150 0 0
Yoccos South
 400 0 0
Lehigh Valley Baptist Church
 125 0 0
Trivet Family Restaurant I
 250 0 0
National Water Services
 25 0 0
Jasper Park
 100 0 0
Buckeye Pipe Line CO
 210 0 0
Mystic Chain Hall
 150 2 0
Vera Cruz Tavern
 100 0 0
Papa Rossis Pizzeria
 50 2 0
ST Michaels Archangel School
 250 0 0
Limeport Deli
 25 0 0
YE Olde Limeport Hotel
 75 0 0
Jordan United Church of Christ
 350 0 0
Trinity Wesleyan Church
 145 2 0
Nestle Purina Petcare CO
 640 0 0
Hilltop Gardens on Chestnut
 50 0 0
Chestnut Hill Church
 100 2 0
Upper Milford Twp Muni Cntr
 25 0 0
Jordan Lutheran Church
 150 0 0
Zions Evangelical Lutheran CH
 120 0 0
Grumpys Bar B Que Roadhouse
 200 0 0
Ruffinos Italian Kitchen
 75 0 0
Morgans Restaurant
 75 0 0
Old Zionsville Ucc
 120 0 0
ST Pauls Ucc of Trexlertown
 300 0 0
Trexlertown Crossings
 50 0 0
Lenape Park
 200 0 0
1760 Pub N Grille
 200 0 0
Upper Milford Mennonite Church
 60 0 0
Fairmont Village
 200 1 0
Domaine Pterion Vineyard
 100 2 0
Norma JS Restaurant
 100 0 0
Community Baptist Church
 25 0 0
Rural Sportsmens Assn
 100 0 0
Upper Milford WD Fire CO #1
 100 1 0
The Inside Scoop Ice Cream
 30 0 0
Locust Valley Chapel
 200 0 0
All non-community systems
About this data

Water systems are matched to Lehigh County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.

ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Pennsylvania records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.