Lehigh County, Pennsylvania
36 ZIP codes · Avg score 51/100 · Grade D · Updated
ZipCheckup grade for Lehigh County: D.
Several federal signals point to home-safety risks in this ZIP.
Poor compliance rates put Lehigh County in the bottom safety tier - 36 ZIP codes, below the state average.
How Lehigh County Compares
How Lehigh County Compares
Lehigh County scores 6 points below the Pennsylvania state average (57/100) and 22 points below the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Lehigh County, Pennsylvania
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Estimated additional annual cost per homeowner: $4,671, driven primarily by sea_level
67.3% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Lehigh County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 4 violations. Past 5 years: 11 total (11 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $4,671
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
151,971 housing units in Lehigh County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Lehigh County
Remediation costs are relatively manageable for most homeowners in Lehigh County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Water systems serving Lehigh County
8 community water systems serving Lehigh County.
- D
- D
- C
- D
- D
- F
Show all 8 water systems
- D
- D
27 total water systems serve Lehigh County.
Systems with the most violations in Lehigh County
5 water systems with recorded EPA violations.
- F
- C
- C
- C
- D
All ZIP Codes in Lehigh County
36 ZIP codes tracked in Lehigh County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 18018 | Bethlehem | 65 | C | 6 | $224K |
| 2 | 18078 | Schnecksville | 65 | C | 5 | $361K |
| 3 | 18034 | Center Valley | 64 | C | 7 | $398K |
| 4 | 18069 | Orefield | 62 | C | 15 | $407K |
| 5 | 18036 | Coopersburg | 61 | C | 13 | $382K |
| 6 | 18080 | Slatington | 59 | C | 22 (1 health) | $254K |
| 7 | 19539 | Mertztown | 58 | C | 24 (1 health) | $264K |
| 8 | 18037 | Coplay | 49 | D | 3 | $241K |
| 9 | 18101 | Allentown | 49 | D | 4 | $154K |
| 10 | 18052 | Whitehall | 48 | D | 7 | $247K |
| 11 | 18109 | Allentown | 48 | D | 7 | $180K |
| 12 | 18051 | Fogelsville | 47 | D | 9 | $444K |
| 13 | 18106 | Allentown | 47 | D | 9 | $361K |
| 14 | 18102 | Allentown | 46 | D | 11 | $147K |
| 15 | 18104 | Allentown | 43 | D | 22 | $297K |
| 16 | 18103 | Allentown | 41 | D | 28 | $242K |
| 17 | 18049 | Emmaus | 33 | F | 113 (1 health) | $283K |
| 18 | 18062 | Macungie | 33 | F | 108 | $364K |
| 19 | 18001 | Lehigh Valley | — | — | — | |
| 20 | 18031 | Breinigsville | — | — | 12 | $359K |
| 21 | 18046 | East Texas | — | — | 9 | — |
| 22 | 18053 | Germansville | — | — | $294K | |
| 23 | 18059 | Laurys Station | — | — | 3 | $421K |
| 24 | 18060 | Limeport | — | — | — | |
| 25 | 18065 | Neffs | — | — | 1 | — |
| 26 | 18066 | New Tripoli | — | — | 9 | $323K |
| 27 | 18068 | Old Zionsville | — | — | — | |
| 28 | 18079 | Slatedale | — | — | $117K | |
| 29 | 18087 | Trexlertown | — | — | 9 | $339K |
| 30 | 18092 | Zionsville | — | — | 93 | $390K |
| 31 | 18098 | Emmaus | — | — | — | |
| 32 | 18099 | Emmaus | — | — | — | |
| 33 | 18105 | Allentown | — | — | — | |
| 34 | 18175 | Allentown | — | — | — | |
| 35 | 18195 | Allentown | — | — | — | |
| 36 | 19529 | Kempton | — | — | $346K |
Recommended Buyer Guides for Lehigh County
Retailer arrangements don't shape what appears here - the selection logic is independent, filtered against EPA detections and the federal hazard data on file for this county.
- Best Water Filters for PFAS — PFAS detected in 3 ZIP codes
- Best Lead Paint Test Kits — 67.3% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Lehigh County, Pennsylvania
Overview
Lehigh County in Pennsylvania covers 36 tracked ZIP records with an average Home Safety Score of D (51/100) across 18 scored records.
25 of 25 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 3 health-based violations appear in the available health breakdown.
← Back to Pennsylvania Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
What You Can Do
Lehigh County has a grade of D. Here are steps to protect your household.
Test your tap water
Order a certified lab test kit ($20-$50) to check for lead, bacteria, and other contaminants specific to your ZIP code.
Consider a certified water filter
NSF-certified filters can remove most common contaminants. Match the filter to your test results for best protection. Try our filter matcher
Contact your water utility
Request the latest Consumer Confidence Report (CCR) from your water provider. It details exactly what was found in your water supply.
Check for lead in your home
67.3% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.