Anomaly of the Week: PFAS 'Forever Chemicals' Exceed EPA Limits in Philadelphia, PA — 1.6 million Affected
Category: PFAS Contamination | Newsworthiness: 82/100 | Affected population: 1,600,000
Water testing in Philadelphia, PA (ZIP 19131) detected 9 types of PFAS compounds, with 3 exceeding EPA maximum contaminant levels. The Philadelphia Water Department serves approximately 1.6 million people.
Key Data Points
- PFAS types detected: 9
- Total PFAS detections: 275
- MCL exceedances: 3 contaminants above EPA limits
- PFOA: 0.0126 µg/L (MCL: 0.004 µg/L)
- PFNA: 0.012 µg/L (MCL: 0.01 µg/L)
- PFOS: 0.0092 µg/L (MCL: 0.004 µg/L)
What This Means
This anomaly was flagged by ZipCheckup's automated monitoring system, which scans EPA SDWIS data, enforcement records, and water quality trends across 29,218 ZIP codes daily. A newsworthiness score of 82 places this in the top tier of detected events.
Residents in ZIP 19131 should:
- Check their full safety report at zipcheckup.com/report/19131
- Review recent water quality notices from their local utility
- Consider water testing if they haven't tested in the past year
Also This Week
| Headline | Category | Score | Affected |
|---|---|---|---|
| Phoenix, AZ Water Safety Score Drops 31 Points in 90 days | Score Drop | 81 | 1,695,000 |
| PFAS "Forever Chemicals" Exceed EPA Limits in Amityville, NY — 1.1 million Affected | PFAS Contamination | 81 | 1,100,000 |
| PFAS "Forever Chemicals" Exceed EPA Limits in Abington, PA — 823K Affected | PFAS Contamination | 81 | 822,600 |
Data Sources
- https://zipcheckup.com/report/19131/
- https://zipcheckup.com/maps/pfas/
- https://echo.epa.gov/trends/pfas-tools
- ZipCheckup Methodology
- EPA SDWIS Database
Auto-generated on 2026-05-11 from ZipCheckup monitoring data. This post is produced by an automated pipeline that selects the most newsworthy environmental anomaly each week based on newsworthiness scoring of 6,133 candidates. No editorial judgment is applied — selection is purely data-driven.