DrinkingWaterCheck

What's in UPPER DEERFIELD TWP WATER DEPT's water?

UPPER DEERFIELD TWP WATER DEPT has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 3,100 people get their water from it, across 1,017 connections.

Ranked against every other system in this dataset

89 total violations and 27 health-based ones put UPPER DEERFIELD TWP WATER DEPT at the 95th percentile nationally for violation burden, rank 641 of 12,903.

Against the NJ average

UPPER DEERFIELD TWP WATER DEPT's 27 health-based violations sit above the NJ average of 5.3, across 270 systems statewide. The filter guide explains what a violation like this actually calls for.

Most recent violation on record

UPPER DEERFIELD TWP WATER DEPT's most recent violation on record is dated 2025-01-10, with the most recent health-based one dated 2019-01-07. Last reported to EPA: 06/30/2026.

The concern categories on record

UPPER DEERFIELD TWP WATER DEPT's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:

The most severe category on record is radionuclides, which points toward a reverse osmosis-class filter if you want to address it directly.

What UPPER DEERFIELD TWP WATER DEPT's record does not cover

Everything on this page is UPPER DEERFIELD TWP WATER DEPT's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Between the utility's meter and UPPER DEERFIELD TWP WATER DEPT's customers' taps is household plumbing, invisible to a system-level record ranked 641th of 12,903 by violation count. The guide to what this data misses covers that gap.