Nitrate in Pennsylvania Drinking Water — 36 ZIPs Tested
EPA data analysis for nitrate in Pennsylvania drinking water systems
Nitrate Contamination in Pennsylvania
ZipCheckup analyzed drinking water data across 2,184 ZIP codes in Pennsylvania for nitrate contamination. 36 ZIP codes have reported nitrate detections, and 1 have EPA violations on record.
EPA Standard for Nitrate
The EPA maximum contaminant level (MCL) for nitrate is 10 mg/L (as nitrogen), governed by the National Primary Drinking Water Regulations. Water systems that exceed this limit must take corrective action and notify consumers.
Worst ZIP Codes for Nitrate in Pennsylvania
These ZIP codes reported the highest nitrate levels in Pennsylvania based on CCR reports and EPA data:
Lowest Nitrate Levels in Pennsylvania
These ZIP codes had the lowest reported nitrate detections in Pennsylvania:
Health Effects of Nitrate
How to Remove Nitrate From Drinking Water
The most effective treatment for nitrate removal is Reverse Osmosis or Ion Exchange. Look for filters certified under NSF 53 / NSF 58 standards.
Check Your ZIP Code
Use the ZipCheckup water quality search to see nitrate data for your specific water system in Pennsylvania.
Worst ZIP Codes for Nitrate in Pennsylvania
Ranked by highest nitrate detection level.
| Rank | ZIP Code | City | Level Detected | EPA Limit | Status |
|---|---|---|---|---|---|
| 1 | 17538 | Landisville | 9.02 ppm | 10 ppm | Within Limit |
| 2 | 16801 | State College | 7.37 ppm | 10 ppm | Within Limit |
| 3 | 16803 | State College | 7.37 ppm | 10 ppm | Within Limit |
| 4 | 16804 | State College | 7.37 ppm | 10 ppm | Within Limit |
| 5 | 16805 | State College | 7.37 ppm | 10 ppm | Within Limit |
| 6 | 16827 | Boalsburg | 7.37 ppm | 10 ppm | Within Limit |
| 7 | 16851 | Lemont | 7.37 ppm | 10 ppm | Within Limit |
| 8 | 16868 | Pine Grove Mills | 7.37 ppm | 10 ppm | Within Limit |
| 9 | 16877 | Warriors Mark | 7.37 ppm | 10 ppm | Within Limit |
| 10 | 17022 | Elizabethtown | 7.05 ppm | 10 ppm | Within Limit |
| 11 | 17570 | Rheems | 7.05 ppm | 10 ppm | Within Limit |
| 12 | 17522 | Ephrata | 6.39 ppm | 10 ppm | Within Limit |
| 13 | 17578 | Stevens | 6.39 ppm | 10 ppm | Within Limit |
| 14 | 17503 | Bart | 5.6525 ppm | 10 ppm | Within Limit |
| 15 | 17504 | Bausman | 5.6525 ppm | 10 ppm | Within Limit |
| 16 | 17505 | Bird In Hand | 5.6525 ppm | 10 ppm | Within Limit |
| 17 | 17516 | Conestoga | 5.6525 ppm | 10 ppm | Within Limit |
| 18 | 17554 | Mountville | 5.6525 ppm | 10 ppm | Within Limit |
| 19 | 17564 | Penryn | 5.6525 ppm | 10 ppm | Within Limit |
| 20 | 17572 | Ronks | 5.6525 ppm | 10 ppm | Within Limit |
Lowest Nitrate Levels in Pennsylvania
Cities with Nitrate Data in Pennsylvania
20 cities in Pennsylvania have nitrate testing data available.