New Jersey County Water Quality Reports
Water quality reports for all counties in New Jersey. Browse by county to see safety scores, violations, and ZIP code data.
Browse water quality data by county in New Jersey. Each county page lists all ZIP codes with safety scores and EPA violation data.
Atlantic County, NJ: 11 Health Violations — 70/100 (2026)
2026 report: Atlantic County, NJ scores 70/100 (Grade B). 37 ZIP codes analyzed. 116 EPA violations found. Free report with contaminant data and filter ...
Bergen County, NJ: 5 Health Violations — 54/100 (2026)
2026 report: Bergen County, NJ scores 54/100 (Grade D). 71 ZIP codes analyzed. 70 EPA violations found. Free report with contaminant data and filter picks.
Burlington County, NJ: 9 Health Violations — 63/100 (2026)
2026 report: Burlington County, NJ scores 63/100 (Grade C). 36 ZIP codes analyzed. 99 EPA violations found. Free report with contaminant data and filter...
Camden County, NJ: 10 Health Violations — 63/100 (2026)
2026 report: Camden County, NJ scores 63/100 (Grade C). 35 ZIP codes analyzed. 45 EPA violations found. Free report with contaminant data and filter picks.
Cape May County, NJ: 5 Health Violations — 72/100 (2026)
2026 report: Cape May County, NJ scores 72/100 (Grade B). 17 ZIP codes analyzed. 61 EPA violations found. Free report with contaminant data and filter p...
Cumberland County, NJ: 27 Health Violations — 63/100 (2026)
2026 report: Cumberland County, NJ scores 63/100 (Grade C). 20 ZIP codes analyzed. 137 EPA violations found. Free report with contaminant data and filte...
Essex County, NJ: 34 Health Violations — 65/100 (2026)
2026 report: Essex County, NJ scores 65/100 (Grade C). 61 ZIP codes analyzed. 225 EPA violations found. Free report with contaminant data and filter picks.
Gloucester County, NJ: 4 Health Violations — 63/100 (2026)
2026 report: Gloucester County, NJ scores 63/100 (Grade C). 34 ZIP codes analyzed. 58 EPA violations found. Free report with contaminant data and filter...
Hudson County, NJ: 2 Health Violations — 56/100 (2026)
2026 report: Hudson County, NJ scores 56/100 (Grade C). 24 ZIP codes analyzed. 12 EPA violations found. Free report with contaminant data and filter picks.
Hunterdon County, NJ: 14 Health Violations — 47/100 (2026)
2026 report: Hunterdon County, NJ scores 47/100 (Grade D). 41 ZIP codes analyzed. 143 EPA violations found. Free report with contaminant data and filter...
Mercer County, NJ: 110 Health Violations — 52/100 (2026)
2026 report: Mercer County, NJ scores 52/100 (Grade D). 47 ZIP codes analyzed. 1397 EPA violations found. Free report with contaminant data and filter p...
Middlesex County, NJ: 16 Health Violations — 62/100 (2026)
2026 report: Middlesex County, NJ scores 62/100 (Grade C). 45 ZIP codes analyzed. 206 EPA violations found. Free report with contaminant data and filter...
Monmouth County, NJ: 7 Health Violations — 44/100 (2026)
2026 report: Monmouth County, NJ scores 44/100 (Grade D). 50 ZIP codes analyzed. 91 EPA violations found. Free report with contaminant data and filter p...
Morris County, NJ: Lead Above EPA Limits — 48/100 (2026)
2026 report: Morris County, NJ scores 48/100 (Grade D). 58 ZIP codes analyzed. 367 EPA violations found. Lead above EPA limits. Free report with contami...
Ocean County, NJ: 6 Health Violations — 74/100 (2026)
2026 report: Ocean County, NJ scores 74/100 (Grade B). 33 ZIP codes analyzed. 127 EPA violations found. Free report with contaminant data and filter picks.
Passaic County, NJ: Lead Above EPA Limits — 66/100 (2026)
2026 report: Passaic County, NJ scores 66/100 (Grade C). 23 ZIP codes analyzed. 109 EPA violations found. Lead above EPA limits. Free report with contam...
Salem County, NJ: 6 Health Violations — 65/100 (2026)
2026 report: Salem County, NJ scores 65/100 (Grade C). 12 ZIP codes analyzed. 36 EPA violations found. Free report with contaminant data and filter picks.
Somerset County, NJ: 4 Health Violations — 53/100 (2026)
2026 report: Somerset County, NJ scores 53/100 (Grade D). 4 ZIP codes analyzed. 28 EPA violations found. Free report with contaminant data and filter pi...
Sussex County, NJ: 20 Health Violations — 53/100 (2026)
2026 report: Sussex County, NJ scores 53/100 (Grade D). 25 ZIP codes analyzed. 220 EPA violations found. Free report with contaminant data and filter pi...
Union County, NJ: 5 Violations — 53/100 (2026)
2026 report: Union County, NJ scores 53/100 (Grade D). 9 ZIP codes analyzed. 5 EPA violations found. Free report with contaminant data and filter picks.
Warren County, NJ: Lead Above EPA Limits — 46/100 (2026)
2026 report: Warren County, NJ scores 46/100 (Grade D). 21 ZIP codes analyzed. 39 EPA violations found. Lead above EPA limits. Free report with contamin...
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