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Counties → New Jersey

Morris County, New Jersey

SDWIS compliance plate

Sheet NJ027 · Morris County 304 sys · 24,499 viol · #155/3254

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

  • VIOL-SEVERE 96.1% flagged
  • HEALTH-LOW 8.5% health
  • RANK-TOP #155/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-HIGH 78.8% detect
  • SRC-GW GW lead 96%
  • SYS-LARGE 304 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Morris County ranks #155 of 3,254 counties by people served, and #11 of 21 counties in New Jersey. See methodology · corpus placement.

Morris County standing, mid-flagged corpus third

Flagged-system rate 96.1% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 8.5% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 78.8% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #155 of 3,254 · #11 of 21 in New Jersey.

Flagged-rate neighbourhood around Morris County

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

0% 20% 40% 60% 80% 100% Ocean · lowest Morris · this county Hunterdon · near Hudson · highest 91.1% 96% 96.1% 96.2% 96.2% 96.4% 100%

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

Water Systems

System Name Population Violations PFAS
Southeast Morris County Mua 62,349 549 Detected
Parsippany-Troy Hills Water Department 50,400 430 Detected
Dover Water Commission 27,806 546 Detected
Montville Twp Mua 22,000 87 Detected
Denville Twp Water Dept 15,881 456 Detected
Madison Water Dept 15,820 139 Detected
Randolph Twp Public Works Dept 14,820 50 Clean
Pequannock Twp Water Department 14,010 291 Clean
Rockaway Twp Water Dept 14,000 234 Detected
NJ American Water - Roxbury 11,793 210 Clean
East Hanover Twp Water Dept 11,393 331 Detected
Lincoln Park Water Dept 11,000 77 Detected
Boonton Water Dept 9,532 347 Detected
Chatham Water Dept 8,962 35 Clean
Florham Park Water Dept 8,846 372 Detected
Jefferson Twp W U Lk Hop 8,500 351 Detected
Mount Olive Twp W D Main 7,887 599 Detected
Rockaway Boro Water Dept 7,066 54 Detected
NJ American Water - Itc 6,463 7 Detected
Wharton Water Dept 6,342 220 Detected
Awo&m - Picatinny Arsenal 6,011 11 Detected
Roxbury Twp W Dept-Shore 5,153 200 Detected
Mt Olive Villages Water 5,000 167 Detected
Washington Twp Mua-Schoo 4,986 196 Detected
Jefferson Twp W U Milton Sys 4,500 390 Detected
Roxbury Twp W Dept-Sky V 4,478 98 Detected
Mine Hill Twp Water Dept 4,300 113 Clean
Mountain Lakes Water Dep 4,012 340 Detected
Mt Olive Village Green Water System 3,600 183 Clean
Netcong Water Dept 3,342 128 Detected
Fayson Lakes Water Company Inc 3,010 152 -
Riverdale Boro Water Dep 2,850 146 -
Veolia Water New Jersey Arlington Hills 1,989 31 -
Mount Arlington Boro Dpw Main 1,978 75 Clean
Kinnelon Water Dept 1,938 133 -
Mt Olive High School 1,750 116 -
West Morris Central High 1,615 33 -
Pequannock Twp WD-Cedar Crest 1,463 40 -
Jefferson Twp High School 1,400 60 -
Hopatcong State Park 1,200 68 -
Sisters of Charity of SE 1,100 22 -
Morris Chase/Morris Hunt Pcws 1,080 97 -
Mount Arlington Dpw Kadel Sys 1,053 65 -
Windlass Restaurant & Marina 1,020 31 -
Quick-Chek 1,006 34 -
Jefferson Twp Middle School 900 55 -
NJ American Water - West Jersey 837 30 -
School House Plaza 811 219 -
St Lukes Parish 786 96 -
Mount Olive Twp W D Sand 744 416 -

Compare beyond New Jersey

Mid-flagged peers for Morris County

Cross-state counties nearest Morris County on flagged-system share (96.1%) and cumulative violation count (24,499). 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.