Out of 813 ZIP codes with data in Pennsylvania, these are the highest-ranked areas for lead (ppb). See also: National Worst ZIP Codes for Lead in Water | All Pennsylvania Rankings
| Statistic | Value |
|---|---|
| ZIP codes ranked | 813 |
| Highest value | 890.0 ppb |
| Median value | 2.0 ppb |
| State | Pennsylvania |
Top 100 Worst ZIP Codes
| Rank | ZIP Code | City | State | Lead (ppb) | Safety Score |
|---|---|---|---|---|---|
| 1 | 17756 | Muncy | PA | 890.0 ppb | 50/100 |
| 2 | 17020 | Duncannon | PA | 301.0 ppb | — |
| 3 | 18302 | East Stroudsburg | PA | 184.0 ppb | — |
| 4 | 18355 | Scotrun | PA | 122.8 ppb | 58/100 |
| 5 | 15848 | Luthersburg | PA | 43.7 ppb | — |
| 6 | 15849 | Penfield | PA | 43.7 ppb | — |
| 7 | 15856 | Rockton | PA | 43.7 ppb | — |
| 8 | 16828 | Centre Hall | PA | 43.3 ppb | 50/100 |
| 9 | 16875 | Spring Mills | PA | 43.3 ppb | — |
| 10 | 15001 | Aliquippa | PA | 33.5 ppb | 52/100 |
| 11 | 15050 | Hookstown | PA | 33.5 ppb | — |
| 12 | 18623 | Laceyville | PA | 32.3 ppb | — |
| 13 | 18630 | Meshoppen | PA | 32.3 ppb | 61/100 |
| 14 | 17737 | Hughesville | PA | 29.6 ppb | — |
| 15 | 17762 | Picture Rocks | PA | 29.6 ppb | — |
| 16 | 16746 | Roulette | PA | 24.5 ppb | — |
| 17 | 15104 | Braddock | PA | 22.6 ppb | 53/100 |
| 18 | 17922 | Auburn | PA | 22.5 ppb | — |
| 19 | 15747 | Home | PA | 20.2 ppb | — |
| 20 | 15759 | Marion Center | PA | 20.2 ppb | — |
| 21 | 16256 | Smicksburg | PA | 20.2 ppb | — |
| 22 | 15030 | Creighton | PA | 20.0 ppb | — |
| 23 | 18030 | Bowmanstown | PA | 18.6 ppb | — |
| 24 | 18058 | Kunkletown | PA | 18.6 ppb | — |
| 25 | 17074 | Newport | PA | 18.5 ppb | — |
| 26 | 15821 | Benezett | PA | 17.2 ppb | — |
| 27 | 15868 | Weedville | PA | 17.2 ppb | — |
| 28 | 15762 | Nicktown | PA | 17.0 ppb | 67/100 |
| 29 | 15957 | Strongstown | PA | 17.0 ppb | — |
| 30 | 15960 | Twin Rocks | PA | 17.0 ppb | — |
| 31 | 15961 | Vintondale | PA | 17.0 ppb | — |
| 32 | 19362 | Nottingham | PA | 16.0 ppb | 42/100 |
| 33 | 17944 | Llewellyn | PA | 14.0 ppb | — |
| 34 | 17951 | Mar Lin | PA | 14.0 ppb | — |
| 35 | 17954 | Minersville | PA | 14.0 ppb | — |
| 36 | 16802 | University Park | PA | 10.8 ppb | 50/100 |
| 37 | 15085 | Trafford | PA | 9.8 ppb | 63/100 |
| 38 | 15112 | East Pittsburgh | PA | 9.8 ppb | 56/100 |
| 39 | 15140 | Pitcairn | PA | 9.8 ppb | 56/100 |
| 40 | 15145 | Turtle Creek | PA | 9.8 ppb | 56/100 |
| 41 | 15218 | Pittsburgh | PA | 9.8 ppb | 45/100 |
| 42 | 15221 | Pittsburgh | PA | 9.8 ppb | 45/100 |
| 43 | 15235 | Pittsburgh | PA | 9.8 ppb | 42/100 |
| 44 | 15003 | Ambridge | PA | 9.3 ppb | 53/100 |
| 45 | 15005 | Baden | PA | 9.3 ppb | 53/100 |
| 46 | 15042 | Freedom | PA | 9.3 ppb | 61/100 |
| 47 | 17538 | Landisville | PA | 8.0 ppb | 47/100 |
| 48 | 17815 | Bloomsburg | PA | 8.0 ppb | — |
| 49 | 17821 | Danville | PA | 8.0 ppb | — |
| 50 | 18848 | Towanda | PA | 7.9 ppb | 50/100 |
| 51 | 18853 | Wyalusing | PA | 7.9 ppb | — |
| 52 | 18854 | Wysox | PA | 7.9 ppb | 50/100 |
| 53 | 17938 | Hegins | PA | 7.8 ppb | — |
| 54 | 17968 | Sacramento | PA | 7.8 ppb | — |
| 55 | 17978 | Spring Glen | PA | 7.8 ppb | 65/100 |
| 56 | 17983 | Valley View | PA | 7.8 ppb | — |
| 57 | 15853 | Ridgway | PA | 7.7 ppb | 67/100 |
| 58 | 15717 | Blairsville | PA | 7.2 ppb | 50/100 |
| 59 | 17026 | Fredericksburg | PA | 7.1 ppb | — |
| 60 | 17038 | Jonestown | PA | 7.1 ppb | 62/100 |
| 61 | 17042 | Lebanon | PA | 7.1 ppb | 37/100 |
| 62 | 17046 | Lebanon | PA | 7.1 ppb | 59/100 |
| 63 | 17505 | Bird In Hand | PA | 7.0 ppb | 43/100 |
| 64 | 17516 | Conestoga | PA | 7.0 ppb | — |
| 65 | 17543 | Lititz | PA | 7.0 ppb | 37/100 |
| 66 | 17551 | Millersville | PA | 7.0 ppb | 47/100 |
| 67 | 17572 | Ronks | PA | 7.0 ppb | 45/100 |
| 68 | 17584 | Willow Street | PA | 7.0 ppb | 48/100 |
| 69 | 17601 | Lancaster | PA | 7.0 ppb | 41/100 |
| 70 | 17602 | Lancaster | PA | 7.0 ppb | 48/100 |
| 71 | 17603 | Lancaster | PA | 7.0 ppb | 46/100 |
| 72 | 18101 | Allentown | PA | 7.0 ppb | 49/100 |
| 73 | 18102 | Allentown | PA | 7.0 ppb | 46/100 |
| 74 | 18103 | Allentown | PA | 7.0 ppb | 41/100 |
| 75 | 18104 | Allentown | PA | 7.0 ppb | 43/100 |
| 76 | 18109 | Allentown | PA | 7.0 ppb | 48/100 |
| 77 | 15620 | Bradenville | PA | 6.4 ppb | 57/100 |
| 78 | 15671 | New Derry | PA | 6.4 ppb | 60/100 |
| 79 | 15716 | Black Lick | PA | 6.4 ppb | 46/100 |
| 80 | 15720 | Brush Valley | PA | 6.4 ppb | 46/100 |
| 81 | 15765 | Penn Run | PA | 6.4 ppb | — |
| 82 | 15779 | Torrance | PA | 6.4 ppb | 43/100 |
| 83 | 15920 | Armagh | PA | 6.4 ppb | 46/100 |
| 84 | 15923 | Bolivar | PA | 6.4 ppb | 46/100 |
| 85 | 15944 | New Florence | PA | 6.4 ppb | 46/100 |
| 86 | 15949 | Robinson | PA | 6.4 ppb | — |
| 87 | 15954 | Seward | PA | 6.4 ppb | 46/100 |
| 88 | 16037 | Harmony | PA | 6.0 ppb | — |
| 89 | 16063 | Zelienople | PA | 6.0 ppb | — |
| 90 | 17214 | Blue Ridge Summit | PA | 6.0 ppb | 51/100 |
| 91 | 17268 | Waynesboro | PA | 6.0 ppb | 50/100 |
| 92 | 18069 | Orefield | PA | 6.0 ppb | 62/100 |
| 93 | 17520 | East Petersburg | PA | 5.9 ppb | 47/100 |
| 94 | 15143 | Sewickley | PA | 5.5 ppb | 48/100 |
| 95 | 17225 | Greencastle | PA | 5.2 ppb | 50/100 |
| 96 | 15901 | Johnstown | PA | 5.0 ppb | 67/100 |
| 97 | 15902 | Johnstown | PA | 5.0 ppb | 67/100 |
| 98 | 15905 | Johnstown | PA | 5.0 ppb | 67/100 |
| 99 | 15906 | Johnstown | PA | 5.0 ppb | 67/100 |
Methodology
Lead rankings are based on the 90th percentile lead testing value (PB90) reported by water systems under the Lead and Copper Rule. When CCR data is unavailable, EPA SDWIS lead sampling data is used. The EPA action level for lead is 15 ppb (0.015 mg/L). There is no safe level of lead exposure.
Data sources: EPA Safe Drinking Water Information System (SDWIS), FEMA National Flood Insurance Program, EPA radon zone maps, EIA electricity rates, and Consumer Confidence Reports. Last updated: 2026-10-14.
Frequently Asked Questions
What is a dangerous lead level in water?
The EPA action level is 15 parts per billion (ppb). The American Academy of Pediatrics recommends no more than 1 ppb for school drinking water. There is no safe level of lead exposure for children.
How is lead measured in water?
Water systems collect samples from homes with known lead service lines or lead solder. The 90th percentile value (PB90) means 90% of samples tested below that level. If PB90 exceeds 15 ppb, the system must take corrective action.
Explore More Rankings
- ZIP Codes with Most EPA Violations in Pennsylvania
- Lowest Home Safety Scores in Pennsylvania
- Highest Home Safety Scores in Pennsylvania
- Historical NFIP Claim Counts in Pennsylvania
- ZIP Codes with Highest Energy Costs in Pennsylvania
- EPA Radon Zone 1 ZIP Codes in Pennsylvania
- ZIP Codes with PFAS Detections in Pennsylvania
- Least Reliable Water Systems in Pennsylvania
- Environmental Justice Concern Areas in Pennsylvania
- Worst ZIP Codes for Homebuyers in Pennsylvania
- ZIP Codes with Worst CO & Gas Risk in Pennsylvania
- Safest ZIP Codes for Gas & CO Risk in Pennsylvania
- ZIP Codes with Worst Wildfire Smoke Risk in Pennsylvania
- Safest ZIP Codes for Wildfire Smoke in Pennsylvania
- All Rankings