Philadelphia County, Pennsylvania
111 ZIP codes · Avg score 85/100 · Grade A · Updated 2026-06-04
In current tracking cycles, Philadelphia County — spanning 111 ZIP codes — records above-average water quality outcomes; the county's compliance history over recent years shows few departures from federal standards.
How Philadelphia County Compares
How Philadelphia County Compares
Philadelphia County scores 30 points above the Pennsylvania state average (55/100) and 17 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Philadelphia 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: $4,743, driven primarily by sea_level
Infrastructure: 0.431% avg pipe failure probability, 64% of ZIPs at high risk
87% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
↑ Worsening trendEPA violation counts by year across Philadelphia County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 37 violations. Past 5 years: 49 total (49 health-based). Health-based violations are rising versus the prior 2-year window — worth closer monitoring.
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $4,743
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
878,704 housing units in Philadelphia 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 Philadelphia County
Remediation costs are relatively manageable for most homeowners in Philadelphia 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 with Most Violations
Top 5 systems in Philadelphia County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | PHILADELPHIA WATER DEPARTMENT | 1,600,000 | 340 |
| 2 | Aqua Pa Main System | 822,600 | 48 |
| 3 | Aqua Pa Bensalem | 59,001 | 4 |
| 4 | Bcwsa Main Lower South | 52,621 | 0 |
| 5 | Upper Southampton Mun Authority | 16,000 | 0 |
Environmental Justice Indicator
Philadelphia County scores in the 72th percentile on the EPA EJScreen composite index, indicating elevated environmental burden relative to the national average. Approximately 50% of residents live in areas classified as disadvantaged communities. EJScreen measures cumulative environmental and demographic factors including air quality, proximity to hazardous sites, and socioeconomic vulnerability. Learn more at EPA.gov
All ZIP Codes in Philadelphia County
111 ZIP codes tracked in Philadelphia County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 19019 | Philadelphia | 96 | A | 4 | — |
| 2 | 19092 | Philadelphia | 96 | A | 4 | — |
| 3 | 19093 | Philadelphia | 96 | A | 4 | — |
| 4 | 19099 | Philadelphia | 96 | A | 4 | — |
| 5 | 19108 | Philadelphia | 96 | A | 4 | $363K |
| 6 | 19109 | Philadelphia | 96 | A | 4 | — |
| 7 | 19155 | Philadelphia | 96 | A | 4 | — |
| 8 | 19160 | Philadelphia | 96 | A | 4 | — |
| 9 | 19161 | Philadelphia | 96 | A | 4 | — |
| 10 | 19162 | Philadelphia | 96 | A | 4 | — |
| 11 | 19170 | Philadelphia | 96 | A | 4 | — |
| 12 | 19171 | Philadelphia | 96 | A | 4 | — |
| 13 | 19172 | Philadelphia | 96 | A | 4 | — |
| 14 | 19173 | Philadelphia | 96 | A | 4 | — |
| 15 | 19175 | Philadelphia | 96 | A | 4 | — |
| 16 | 19176 | Philadelphia | 96 | A | 4 | — |
| 17 | 19177 | Philadelphia | 96 | A | 4 | — |
| 18 | 19178 | Philadelphia | 96 | A | 4 | — |
| 19 | 19179 | Philadelphia | 96 | A | 4 | — |
| 20 | 19181 | Philadelphia | 96 | A | 4 | — |
| 21 | 19182 | Philadelphia | 96 | A | 4 | — |
| 22 | 19183 | Philadelphia | 96 | A | 4 | — |
| 23 | 19184 | Philadelphia | 96 | A | 4 | — |
| 24 | 19185 | Philadelphia | 96 | A | 4 | — |
| 25 | 19187 | Philadelphia | 96 | A | 4 | — |
| 26 | 19188 | Philadelphia | 96 | A | 4 | — |
| 27 | 19190 | Philadelphia | 96 | A | 4 | — |
| 28 | 19191 | Philadelphia | 96 | A | 4 | — |
| 29 | 19192 | Philadelphia | 96 | A | 4 | — |
| 30 | 19193 | Philadelphia | 96 | A | 4 | — |
| 31 | 19194 | Philadelphia | 96 | A | 4 | — |
| 32 | 19195 | Philadelphia | 96 | A | 4 | — |
| 33 | 19196 | Philadelphia | 96 | A | 4 | — |
| 34 | 19197 | Philadelphia | 96 | A | 4 | — |
| 35 | 19244 | Philadelphia | 96 | A | 4 | — |
| 36 | 19255 | Philadelphia | 96 | A | 4 | — |
| 37 | 19101 | Philadelphia | 92 | A | 4 | — |
| 38 | 19102 | Philadelphia | 92 | A | 4 | $412K |
| 39 | 19104 | Philadelphia | 92 | A | 4 | $268K |
| 40 | 19107 | Philadelphia | 92 | A | 4 | $453K |
| 41 | 19110 | Philadelphia | 92 | A | 4 | — |
| 42 | 19112 | Philadelphia | 92 | A | 4 | — |
| 43 | 19118 | Philadelphia | 92 | A | 4 | $688K |
| 44 | 19121 | Philadelphia | 92 | A | 4 | $250K |
| 45 | 19122 | Philadelphia | 92 | A | 4 | $341K |
| 46 | 19123 | Philadelphia | 92 | A | 4 | $545K |
| 47 | 19125 | Philadelphia | 92 | A | 4 | $374K |
| 48 | 19126 | Philadelphia | 92 | A | 4 | $214K |
| 49 | 19133 | Philadelphia | 92 | A | 4 | $85K |
| 50 | 19137 | Philadelphia | 92 | A | 4 | $213K |
| 51 | 19139 | Philadelphia | 92 | A | 4 | $119K |
| 52 | 19140 | Philadelphia | 92 | A | 4 | $101K |
| 53 | 19106 | Philadelphia | 87 | A | 4 | $529K |
| 54 | 19111 | Philadelphia | 87 | A | 4 | $244K |
| 55 | 19115 | Philadelphia | 87 | A | 4 | $331K |
| 56 | 19116 | Philadelphia | 87 | A | 4 | $321K |
| 57 | 19119 | Philadelphia | 87 | A | 4 | $327K |
| 58 | 19120 | Philadelphia | 87 | A | 4 | $144K |
| 59 | 19124 | Philadelphia | 87 | A | 4 | $155K |
| 60 | 19129 | Philadelphia | 87 | A | 4 | $297K |
| 61 | 19130 | Philadelphia | 87 | A | 4 | $484K |
| 62 | 19131 | Philadelphia | 87 | A | 4 | $164K |
| 63 | 19132 | Philadelphia | 87 | A | 4 | $73K |
| 64 | 19134 | Philadelphia | 87 | A | 4 | $128K |
| 65 | 19135 | Philadelphia | 87 | A | 4 | $183K |
| 66 | 19136 | Philadelphia | 87 | A | 4 | $215K |
| 67 | 19138 | Philadelphia | 87 | A | 4 | $167K |
| 68 | 19141 | Philadelphia | 87 | A | 4 | $143K |
| 69 | 19142 | Philadelphia | 87 | A | 4 | $110K |
| 70 | 19143 | Philadelphia | 87 | A | 4 | $152K |
| 71 | 19144 | Philadelphia | 87 | A | 4 | $225K |
| 72 | 19145 | Philadelphia | 87 | A | 4 | $290K |
| 73 | 19146 | Philadelphia | 87 | A | 4 | $452K |
| 74 | 19147 | Philadelphia | 87 | A | 4 | $525K |
| 75 | 19148 | Philadelphia | 87 | A | 4 | $297K |
| 76 | 19149 | Philadelphia | 87 | A | 4 | $198K |
| 77 | 19150 | Philadelphia | 87 | A | 4 | $225K |
| 78 | 19151 | Philadelphia | 87 | A | 4 | $181K |
| 79 | 19152 | Philadelphia | 87 | A | 4 | $270K |
| 80 | 19154 | Philadelphia | 87 | A | 4 | $274K |
| 81 | 19103 | Philadelphia | 82 | B | 4 | $552K |
| 82 | 19114 | Philadelphia | 82 | B | 4 | $276K |
| 83 | 19127 | Philadelphia | 82 | B | 4 | $299K |
| 84 | 19128 | Philadelphia | 82 | B | 4 | $331K |
| 85 | 19153 | Philadelphia | 77 | B | 4 | $199K |
| 86 | 19009 | Bryn Athyn | 73 | B | 0 | $668K |
| 87 | 19032 | Folcroft | 73 | B | 0 | $140K |
| 88 | 19074 | Norwood | 73 | B | 0 | $228K |
| 89 | 19098 | Holmes | 66 | C | 0 | — |
| 90 | 19004 | Bala Cynwyd | 65 | C | 0 | $616K |
| 91 | 19012 | Cheltenham | 65 | C | 0 | $321K |
| 92 | 19018 | Clifton Heights | 65 | C | 0 | $215K |
| 93 | 19033 | Folsom | 65 | C | 0 | $264K |
| 94 | 19036 | Glenolden | 65 | C | 0 | $192K |
| 95 | 19043 | Holmes | 65 | C | 0 | $250K |
| 96 | 19050 | Lansdowne | 65 | C | 0 | $189K |
| 97 | 19066 | Merion Station | 65 | C | 0 | $871K |
| 98 | 19072 | Narberth | 65 | C | 0 | $777K |
| 99 | 19076 | Prospect Park | 65 | C | 0 | $239K |
| 100 | 19078 | Ridley Park | 65 | C | 0 | $245K |
| 101 | 19079 | Sharon Hill | 65 | C | 0 | $160K |
| 102 | 19444 | Lafayette Hill | 65 | C | 0 | $498K |
| 103 | 19027 | Elkins Park | 60 | C | 0 | $349K |
| 104 | 19029 | Essington | 60 | C | 0 | $186K |
| 105 | 19070 | Morton | 60 | C | 0 | $284K |
| 106 | 19095 | Wyncote | 60 | C | 0 | $419K |
| 107 | 19096 | Wynnewood | 60 | C | 0 | $712K |
| 108 | 19006 | Huntingdon Valley | 55 | C | 0 | $519K |
| 109 | 19020 | Bensalem | 55 | C | 0 | $344K |
| 110 | 19023 | Darby | 55 | C | 0 | $117K |
| 111 | 19082 | Upper Darby | 55 | C | 0 | $155K |
Recommended Buyer Guides for Philadelphia County
Strictly editorial — no paid placements influence which guides appear; the selection draws on NSF certifications and EPA detection records for water systems serving this county.
- Best Lead Paint Test Kits — 87% of homes built before 1978
Deep Dive Reports
Detailed analysis for Philadelphia County, Pennsylvania
Overview
Philadelphia County in Pennsylvania covers 111 ZIP codes with an average Home Safety Score of A (85/100).
85 of 111 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Pennsylvania water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.