Monmouth, NJ
A PlainEnviro-computed score from reported facility/violation counts, not an official EPA rating, health forecast, or population-adjusted rate. See methodology.
Environmental data for Monmouth in New Jersey · Population: 643,615
Monmouth, NJ is tracked across three EPA datasets covering 15 Toxics Release Inventory (TRI) facilities, 46 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 37/100 (Moderate Risk), calibrated against national distributions for facility density, chemical release volume, Superfund concentration, and water-system health violations.
Industrial disclosures inside the county total 45.7K lbs of reported toxic releases under EPCRA Section 313, while 15 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 37 and a peak AQI of 119 in 2024, with 91% of observed days rated "Good" (0–50).
All figures below draw directly from federal EPA records, TRI self-reported emissions, SDWIS compliance history, NPL Hazard Ranking System scores, and AQS daily AQI summaries, and are not adjusted, weighted, or forecast. A past violation or elevated score does not itself indicate current unsafe conditions; it documents the regulatory and disclosure history publicly filed with the U.S. Environmental Protection Agency through the most recent reporting cycle.
Air Quality History (2020–2024)
EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.
| Year | Good | Moderate | Unhealthy (SG) | Max AQI |
|---|---|---|---|---|
| 2024 | 240 (91%) | 23 | 1 | 119 |
| 2023 | 210 (85%) | 35 | 2 | 140 |
| 2022 | 226 (91%) | 20 | 1 | 161 |
| 2021 | 227 (89%) | 24 | 3 | 154 |
| 2020 | 209 (92%) | 17 | 0 | 93 |
Source: EPA Air Quality System (AQS) Annual AQI by County EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)
For real-time air quality readings and pollutant breakdowns in New Jersey, see the EPA's AirNow.gov.
Water Systems (46)
| System | Population | Violations |
|---|---|---|
| NJ AMERICAN WATER - COASTAL NORTH | 377,613 | 2 |
| GORDONS CORNER WATER CO | 46,196 | 0 |
| FREEHOLD TWP WATER DEPT | 29,831 | 0 |
| MARLBORO TOWNSHIP WATER UTILITY DIVISION | 29,480 | 2 |
| WALL TWP WATER DEPT | 26,000 | 0 |
| BELMAR WATER DEPT | 20,000 | 3 |
| MANASQUAN WATER DEPARTME | 14,000 | 4 |
| SPRING LAKE WATER DEPARTMENT | 11,270 | 0 |
| FREEHOLD BOROUGH WATER D | 11,029 | 3 |
| KEANSBURG WATER & SEWER DEPT. | 10,105 | 0 |
| MANALAPAN TWP - KNOB HILL | 8,700 | 0 |
| KEYPORT WATER DEPT | 7,500 | 1 |
| AVON BY THE SEA WATER DE | 5,000 | 2 |
| BOROUGH OF SPRINGLAKE HEIGHTS | 5,000 | 0 |
| BRIELLE WATER DEPT | 4,800 | 0 |
| ATLANTIC HIGHLANDS WATER | 4,385 | 0 |
| NJ AMERICAN WATER - NEW EGYPT | 3,495 | 0 |
| LAKE COMO WATER DEPT | 3,000 | 4 |
| SEA GIRT WATER DEPT | 2,636 | 0 |
| ENGLISHTOWN WATER DEPT | 2,504 | 0 |
| FARMINGDALE WATER DEPT | 1,500 | 0 |
| US NAVAL WEAPONS STATION | 1,200 | 2 |
| MANALAPAN TWP WD TRACY STATION | 800 | 0 |
| VEOLIA WATER NEW JERSEY COLTS NECK | 640 | 0 |
| SOUTH WIND MOBILE HOME V | 625 | 0 |
| GATEWAY NRA SANDY HOOK | 500 | 5 |
| EVERGREEN ESTATES | 450 | 3 |
| DEEP RUN ADULT VILLAGE | 400 | 0 |
| ANGLE INN MOTOR COURT | 354 | 0 |
| HOLLY ACRES MHP | 315 | 0 |
| NORMS DALE MOBILE HOME PARK | 250 | 0 |
| WOODLAND MANOR | 250 | 0 |
| WINDING BROOK MHP SYSTEM 2 | 184 | 0 |
| MILLSTONE MANOR | 137 | 0 |
| LAND O PINES MOBILE HOME PARK, INC | 128 | 0 |
| OAK GROVE MHP | 100 | 0 |
| GREEN MEADOW ACRES | 100 | 0 |
| WAGON WHEEL ESTATES | 86 | 0 |
| BRANDYWINE ASSISTED LIVING AT COLTS NECK | 85 | 2 |
| WINDING BROOK MHP SYS 1 | 80 | 0 |
| HYLAND MOBILE HOME PARK | 56 | 2 |
| CREEKSIDE HOMES | 54 | 0 |
| MEADOWS PARK (THE) | 39 | 0 |
| NJ WATER SUPPLY AUTHORITY MANASQUAN | 30 | 3 |
| ALPINE MOBILE HOME PARK | 28 | 1 |
| VEOLIA WATER NEW JERSEY MATCHAPONIX | 0 | 0 |
TRI Facilities (15)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Nestle USA Inc Beverage Div | 38.5K lbs |
| 2 | Allentown LLC | 3.6K lbs |
| 3 | U.S. Dod Naval Weapons Station Earle | 1.9K lbs |
| 4 | Prestone Products Corp | 1.7K lbs |
| 5 | International Flavors & Fragrances Inc | 6 lbs |
| 6 | Ralph Clayton & Sons | 4 lbs |
| 7 | Srm - Howell | 2 lbs |
| 8 | Cooper Wheelock Inc | 1 lbs |
| 9 | Oldcastle Apg | 0 lbs |
| 10 | Bel-Ray Co LLC | 0 lbs |
| 11 | Ralph Clayton & Sons | 0 lbs |
| 12 | Tdk-Lambda Americas Inc. | 0 lbs |
| 13 | Ralph Clayton & Sons | 0 lbs |
| 14 | Applicad Inc | 0 lbs |
| 15 | Cosmetic Essence DBA Voyant Beauty | 0 lbs |
Cities in Monmouth (16)
Frequently Asked Questions
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What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.