Delaware County, Pennsylvania
49 ZIP codes · Avg score 41/100 · Grade D
ZipCheckup grade for Delaware County: D.
Federal records show several conditions worth reviewing.
Your top priority: see the breakdown below and consider a certified water filter. NSF certified filters →
Because the grade blends several data sources, a D or F for Delaware County does not show which factor drove it; the reports for its 49 ZIP codes show the underlying data.
How Delaware County Compares
How Delaware County Compares
Delaware County scores 16 points below the Pennsylvania state average (57/100) and 32 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
ZIP Code Risk Map
Water Quality Map: Delaware County, Pennsylvania
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Modeled additional annual cost estimate per homeowner: $4,440, largest modeled factor: Sea Level
81% of homes built before 1980 (lead paint was banned for residential use in 1978)
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $4,440
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
220,390 housing units in Delaware 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 Delaware County
Modeled remediation costs in Delaware County can be compared with the median property value; actual costs vary by property.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Water systems mapped to Delaware County ZIP codes
3 community water systems mapped to Delaware County ZIP codes; EPA may list more systems serving the county.
- D
- D
- F
Systems with the most violations in Delaware County
2 water systems with violations in EPA records.
- D
- F
All ZIP Codes in Delaware County
49 ZIP codes tracked in Delaware County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 19060 | Garnet Valley | 50 | D | 1 | $516K |
| 2 | 19061 | Marcus Hook | 50 | D | 0 | $230K |
| 3 | 19008 | Broomall | 40 | D | 30 (1 health) | $470K |
| 4 | 19013 | Chester | 40 | D | 30 (1 health) | $85K |
| 5 | 19014 | Aston | 40 | D | 30 (1 health) | $297K |
| 6 | 19015 | Brookhaven | 40 | D | 30 (1 health) | $233K |
| 7 | 19018 | Clifton Heights | 40 | D | 30 (1 health) | $215K |
| 8 | 19022 | Crum Lynne | 40 | D | 30 (1 health) | $124K |
| 9 | 19023 | Darby | 40 | D | 30 (1 health) | $117K |
| 10 | 19026 | Drexel Hill | 40 | D | 30 (1 health) | $243K |
| 11 | 19029 | Essington | 40 | D | 30 (1 health) | $186K |
| 12 | 19032 | Folcroft | 40 | D | 30 (1 health) | $140K |
| 13 | 19033 | Folsom | 40 | D | 30 (1 health) | $264K |
| 14 | 19036 | Glenolden | 40 | D | 30 (1 health) | $192K |
| 15 | 19043 | Holmes | 40 | D | 30 (1 health) | $250K |
| 16 | 19050 | Lansdowne | 40 | D | 30 (1 health) | $189K |
| 17 | 19052 | Lenni | 40 | D | 30 (1 health) | $355K |
| 18 | 19063 | Media | 40 | D | 30 (1 health) | $506K |
| 19 | 19064 | Springfield | 40 | D | 30 (1 health) | $390K |
| 20 | 19070 | Morton | 40 | D | 30 (1 health) | $284K |
| 21 | 19073 | Newtown Square | 40 | D | 30 (1 health) | $581K |
| 22 | 19074 | Norwood | 40 | D | 30 (1 health) | $228K |
| 23 | 19076 | Prospect Park | 40 | D | 30 (1 health) | $239K |
| 24 | 19078 | Ridley Park | 40 | D | 30 (1 health) | $245K |
| 25 | 19079 | Sharon Hill | 40 | D | 30 (1 health) | $160K |
| 26 | 19081 | Swarthmore | 40 | D | 30 (1 health) | $334K |
| 27 | 19082 | Upper Darby | 40 | D | 30 (1 health) | $155K |
| 28 | 19083 | Havertown | 40 | D | 30 (1 health) | $424K |
| 29 | 19086 | Wallingford | 40 | D | 30 (1 health) | $425K |
| 30 | 19094 | Woodlyn | 40 | D | 30 (1 health) | $244K |
| 31 | 19113 | Philadelphia | 40 | D | 30 (1 health) | — |
| 32 | 19319 | Cheyney | 40 | D | 30 (1 health) | $570K |
| 33 | 19373 | Thornton | 40 | D | 30 (1 health) | $711K |
| 34 | 19342 | Glen Mills | 39 | F | 31 (1 health) | $579K |
| 35 | 19010 | Bryn Mawr | — | — | 30 (1 health) | $789K |
| 36 | 19016 | Chester | — | — | — | |
| 37 | 19028 | Edgemont | — | — | — | |
| 38 | 19037 | Glen Riddle Lima | — | — | — | |
| 39 | 19039 | Gradyville | — | — | — | |
| 40 | 19065 | Media | — | — | — | |
| 41 | 19080 | Wayne | — | — | — | |
| 42 | 19088 | Wayne | — | — | — | |
| 43 | 19089 | Wayne | — | — | — | |
| 44 | 19091 | Media | — | — | — | |
| 45 | 19098 | Holmes | — | — | — | |
| 46 | 19105 | Philadelphia | — | — | — | |
| 47 | 19331 | Concordville | — | — | — | |
| 48 | 19339 | Concordville | — | — | — | |
| 49 | 19340 | Concordville | — | — | — |
Recommended Buyer Guides for Delaware County
Which guides appear depends on what the county data show.
- Best Lead Paint Test Kits — 81% of homes built before 1980
- 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 Delaware County, Pennsylvania
Overview
Delaware County in Pennsylvania covers 49 tracked ZIP records with an average Home Safety Score of D (41/100) across 34 scored records.
34 of 35 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 1 health-based violation 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
Delaware County has an average Home Safety grade of D across its scored ZIP records. Here are steps to protect your household.
Test your tap water
Ask a certified laboratory which tests it offers for lead, bacteria, and other contaminants relevant to your home; a $20-$50 kit may cover only certain contaminants.
Consider a certified water filter
NSF/ANSI-certified filters reduce the specific contaminants listed on their certification. 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 reports monitored contaminants detected in the utility's water and related compliance information.
Check for lead in your home
81% of homes in this county were built before 1980. Older plumbing and solder can leach lead into drinking water, especially after water sits in the pipes.