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Counties → New Jersey

Monmouth County, New Jersey

Water Systems
285
Population Served
715,264
Total Violations
9,403
1,000 health-based
PFAS Detected
18
of 22 tested

Violation Analysis

92.6%
Systems with Violations
33.0
Avg Violations per System
10.6%
Health-Based Violations

Water Source Types

GW
27 systems (9%)
SW
23 systems (8%)

PFAS Contamination

22
Systems Tested
18
PFAS Detected
81.8%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Monmouth New Jersey water systems by violation status, EPA SDWIS records.

No violations on record (1) One or more violations (49)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
NJ American Water - Coastal North 377,613 75 Detected
Gordons Corner Water Co 46,196 24 Detected
Freehold Twp Water Dept 29,831 48 Detected
Marlboro Township Water Utility Division 29,480 115 Detected
Wall Twp Water Dept 26,000 52 Detected
Belmar Water Dept 20,000 96 Detected
Manasquan Water Departme 14,000 48 Clean
Red Bank Water Dept 12,520 422 Detected
Spring Lake Water Department 11,270 29 Clean
Freehold Borough Water D 11,029 99 Clean
Keansburg Water & Sewer Dept. 10,105 406 Detected
Matawan Borough Water DE 9,084 228 Detected
Manalapan Twp - Knob Hill 8,700 12 Detected
Keyport Water Dept 7,500 82 Detected
Aberdeen - Cliffwood/Cliffwood Beach 6,775 190 Clean
Avon by the Sea Water DE 5,000 54 Detected
Borough of Springlake Heights 5,000 268 Detected
Brielle Water Dept 4,800 37 Detected
Atlantic Highlands Water 4,385 128 Clean
Lake Como Water Dept 3,000 72 -
Wawa #909 2,995 10 -
Delicious Orchard Market 2,725 46 -
Sea Girt Water Dept 2,636 36 -
Englishtown Water Dept 2,504 71 Detected
Wawa #910 2,446 60 -
Aberdeen- High School/Oakshade Area 2,123 106 -
Colts Neck High School 2,100 56 -
Monmouth County Park System 2,021 36 -
Allentown Water Dept 2,000 21 Clean
McDonalds Restaurant #6214 1,620 41 Clean
Farmingdale Water Dept 1,500 15 -
Quick Chek Store #178 1,240 18 -
US Naval Weapons Station 1,200 50 -
Manasquan Reservoir Visitor Center 1,008 32 -
The Orchards at Colts Neck 950 92 -
Roosevelt Water Dept 880 80 -
Millstone Twp Middle School 850 6 -
Burger King #13470 848 11 -
McDonalds Restaurant 821 1 -
St. Josephs Church 802 7 -
Manalapan Twp WD Tracy Station 800 21 -
Black Bear Lake Day Camp #2 700 2 -
Black Bear Day Camp Well 3 700 22 -
Church of St. William the Abbot 650 102 -
Millstone Twp Primary School 650 25 -
Veolia Water New Jersey Colts Neck 640 145 -
Frog Bridge Day Camp & Tadpole Village P 618 16 -
Pine Grove Day Camp Bldg 610 5 -
Pine Grove Day Camp Well#1 605 0 -
Colts Neck Shopping Ctr 575 10 -

Other Counties in New Jersey

Bergen County
49 systems · 1,133,521 served · 6,905 violations
Essex County
25 systems · 889,677 served · 4,186 violations
Union County
7 systems · 778,855 served · 855 violations
Ocean County
214 systems · 721,554 served · 10,195 violations
Burlington County
293 systems · 674,987 served · 19,188 violations
Middlesex County
35 systems · 668,615 served · 2,949 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Monmouth County? ▼
Monmouth County has 9,403 total drinking water violations across 285 water systems, of which 1,000 are health-based violations. 92.6% of systems have at least one violation.
How many people get water from Monmouth County systems? ▼
Water systems in Monmouth County serve approximately 715,264 people through 285 public water systems.
Has PFAS been detected in Monmouth County water? ▼
Of 22 water systems tested for PFAS in Monmouth County, 18 had PFAS detected (81.8% detection rate).
What types of water sources supply Monmouth County? ▼
Water systems in Monmouth County use GW (27 systems), SW (23 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 10.6% of Monmouth County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - 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 Editorial

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.