Morris County tap water
24 of 34 water systems serving Morris County with full PFAS testing averaged above a 2024 federal PFAS level at one or more sampling points.
- 63 community water systems list this county as served; 33 serve 3,300+ people with full PFAS testing.
- 20 had a health-based violation since 2021-10-26.
Largest systems serving this county
| System | Source | People served (whole system) | PFAS above a 2024 level? | Violations since 2021-10-26 |
|---|---|---|---|---|
| NJ American Water - Short Hills | Surface water | 217,230 | Yes | 0 |
| Southeast Morris County Mua | Surface water | 62,349 | Yes | 0 |
| Parsippany-Troy Hills Water department | Purchased surface water | 50,400 | Yes | 0 |
| Dover Water Commission | Groundwater | 27,806 | Yes | 0 |
| Montville Twp Mua | Purchased surface water | 22,000 | Yes | 3 |
| Denville Twp Water dept | Groundwater | 15,881 | Yes | 0 |
| Madison Water dept | Groundwater | 15,820 | Yes | 0 |
| Randolph Twp Public Works dept | Purchased groundwater | 14,820 | No | 0 |
| Pequannock Twp Water department | Purchased surface water | 14,010 | No | 0 |
| Rockaway Twp Water dept | Groundwater | 14,000 | Yes | 0 |
| NJ American Water - Roxbury | Groundwater | 11,793 | No | 0 |
| East Hanover Twp Water dept | Purchased surface water | 11,393 | Yes | 1 |
Which one is yours? A county usually has several utilities. Your bill or your utility's annual water-quality report names yours. Population is for the whole system, which can cross county lines.
Not medical or legal advice. UCMR 5 results are screening data, not compliance determinations.
Sources and freshness
Public-water-system facts, violations and lead/copper results: EPA ECHO SDWA download (SDWIS snapshot 2026-10-13). PFAS and lithium results: EPA UCMR 5 final data (sampling 2023–2025). Both are U.S. government works, downloaded 2026-10-26. Numbers are computed by the published method; the same fields are in the open data files.