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Counties → New Jersey

Essex County, New Jersey

SDWIS compliance plate

Sheet NJ013 · Essex County 25 sys · 4,186 viol · #66/3254

VIOL-SEVERE · HEALTH-LOW · RANK-TOP · PHOTO-FINISH · PFAS-HIGH · SRC-SW · SYS-SMALL · BOOK-FULL

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 15.4% health
  • RANK-TOP #66/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-HIGH 83.3% detect
  • SRC-SW SW lead 80%
  • SYS-SMALL 25 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Union County (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Essex County ranks #66 of 3,254 counties by people served, and #2 of 21 counties in New Jersey. See methodology · corpus placement.

Essex County standing, mid-flagged corpus third

Flagged-system rate 100.0% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 15.4% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 83.3% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #66 of 3,254 · #2 of 21 in New Jersey.

Flagged-rate neighbourhood around Essex County

Lowest/highest poles plus in-state counties nearest Essex County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% Ocean · lowest Bergen · near Hudson · highest 91.1% 98% 98% 100% 100% 100%

Source: EPA SDWIS (county aggregates) As of 2026-05-15

Water Systems

System Name Population Violations PFAS
Newark Water Department 294,274 349 Detected
NJ American Water - Short Hills 217,230 31 Detected
East Orange Water Commission 75,000 316 Detected
Bloomfield Water Department 47,315 368 Clean
Montclair Water Bureau 40,150 56 Detected
Belleville Water Dept 35,129 486 Clean
Orange Water Dept 30,134 136 Detected
Nutley Water Dept 29,500 144 Clean
Livingston Twp Div of Water 27,391 547 Detected
South Orange Water Department 16,964 127 Detected
Verona Water Department 13,641 161 Detected
Cedar Grove Water Dept 12,900 130 Detected
West Caldwell Water Department 10,759 64 Detected
Caldwell Water Dept 9,027 82 Detected
Glen Ridge Water Dept 7,681 45 Detected
Fairfield Water Dept 7,400 111 Detected
North Caldwell Water Dep 6,000 80 Detected
Roseland Water Dept 5,300 83 Detected
Essex Fells Water Dept 2,200 143 -
State Street Grill 835 16 -
Essex Fells Water Hilltop System 354 23 -
North Caldwell - Hilltop 208 45 -
The High Lawn 135 407 -
M&t Restaurant 110 227 -
Mainland Development Corp 40 9 -

Compare beyond New Jersey

Mid-flagged peers for Essex County

Cross-state counties nearest Essex County on flagged-system share (100.0%) and cumulative violation count (4,186). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.