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Review government records associated with Princeton, New Jersey.
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Match the public water system name and identifier to the supplier on your water bill before using EPA UCMR 5 results. Review the sampling location, date, units and reporting level. A city name alone does not establish which system serves an address, and an individual survey result does not establish regulatory compliance.
Check your water bill for your utility name and confirm the reporting year. See EPA’s guide to finding your annual water quality report.
Public water-system records for Princeton, NJ from EPA SDWIS.
Trenton Water Works
Active health-based drinking-water issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City-area ZIP code · Serves 217,000 people
Hightstown Water Department
No active drinking-water issues detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City-area ZIP code · Serves 5,400 people
Allentown Water Dept
No active drinking-water issues detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City-area ZIP code · Serves 2,000 people
Data from EPA SDWIS
Reviewed: source records as of Q1 2026
EPA UCMR5 — No PFAS detection records shown for these water systems
Open data source: EPA UCMR5DoD PFAS — No investigation records shown for this report
Open data source: DoD PFASEPA ATTAINS records identify assessed water bodies that do not meet water-quality standards for designated uses.
Lower Stony Brook
Reported: Nov 2026
Health-relevant causes: Metals (other Than Mercury), Pathogens
Affected uses: Drinkingwater, Ecological, Recreation
Data from EPA ATTAINS
NPDES permits regulate pollutant discharges into U.S. waterways. Facilities must report compliance quarterly.
Violation records
Last inspected: Dec 2025
Last inspected: Dec 2025
Data from EPA ECHO
To investigate water contamination, check the sampling locations, dates and results below. For tap water records, see Drinking water quality above.
Reviewed: source records as of 2026
Review historical EPA air pollution records, including monitoring and facility emissions where available. For current conditions, check local air quality on AirNow.
Mercer County
Assessment year: 2020
According to EPA, a cancer risk of 30-in-1-million means that for every 1 million people continuously exposed to these air toxics over a 70-year lifetime, an estimated 30 may develop cancer from that exposure. This is in addition to cancer risk from all other causes.
Top modeled source groups
Data from EPA AirToxScreen
EPA designates an area as nonattainment when air quality does not meet federal health-based standards (NAAQS) for a specific pollutant.
Philadelphia-Wilmington-Atlantic City: Ozone
NonattainmentSerious8-Hour Ozone (2015 Standard)
Health effects (EPA): Respiratory inflammation, aggravation of asthma, reduced lung function (EPA)
Maintenance areas
Previously nonattainment; currently meeting the standard and monitored under an EPA maintenance plan.
New York-N. New Jersey-Long Island
PM2.5 · PM-2.5 (2006 Standard)
Classification: Former Subpart 1
Original designation: Dec 2009
Current design value: 25 µg/m³ (2023-2025)
Historical designations under the revoked 1997 ozone standard
These records describe historical designations. EPA revoked the 1997 ozone standard on April 6, 2015.
Philadelphia-Wilmington-Atlantic City Area
Historical standard: 0.08 ppm (8-hour)
Historical designation: Nonattainment (NAAQS revoked) · Subpart 2/Moderate
Original designation: Jun 2004
Open data source: EPA final revocation ruleContinuing requirements have not been verified for this area.
Data from EPA Green Book
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
Bristol
Annual mean: 16.6 Parts per billion
Observation year: 2025
Annual mean: 0.045 Parts per million
EPA primary exceedance count: 4 (Ozone 8-hour 2015)
Observation year: 2025
Colliers Mills — Jackson (Township of), New Jersey
Annual mean: 0.042 Parts per million
EPA primary exceedance count: 1 (Ozone 8-hour 2015)
Observation year: 2025
Data from EPA AQS
Reviewed: source records as of Q4 2025
TRI releases are self-reported annual totals (calendar year 2024). Hover fugitive or stack for definitions.
E R Squibb & Sons LLC
Reported: 2024
EPA records for current, proposed and formerly listed Superfund sites on the National Priorities List (NPL).
Open data source: Search EPA ECHOEPA FRS Registry ID 110000802622
Reported: Nov 2021
EPA FRS Registry ID 110009300158
Reported: Nov 2021
Reviewed: source query run Nov 2026
State environmental agencies maintain cleanup site databases that include state Superfund, voluntary cleanup, and brownfield remediation programs. These programs track additional sites beyond those on the federal NPL.
3 sites with active cleanup or investigation
130 UNIVERSITY PL, PRINCETON
1.7 miles away · MERCER County
Reported: Nov 2026
2 4 NASSAU ST, PRINCETON
0.7 miles away · MERCER County
Reported: Nov 2026
20 WASHINGTON RD, PRINCETON
0.9 miles away · MERCER County
Reported: Nov 2026
Data from EPA ECHO
Facilities with hazardous-waste handler records under RCRA in the reviewed 5-mile city-center search area. Active handler status is separate from air, water, or other ECHO compliance violations, which are shown in their own sections.
Active RCRA handler records in the reviewed city search area
Release reports
Reported: Dec 2021
Reported: Dec 2021
Data from EPA UST Finder
Reviewed: reporting year 2024
Sites regulated by the Mine Safety and Health Administration, including mines, sand and gravel operations, and portable crushers. Status and type are from the MSHA Mine Data Retrieval System. Records with active/intermittent status dates older than 5 years are shown as older records rather than current active sites.
No records shown in this group.
Reviewed: status dates within last 5 years
Data from MSHA
Mercer County, NJ
EPA Radon Zone Map (June 2024 release)
Mercer County is EPA Radon Zone 1 (highest potential). EPA defines Zone 1 counties as having predicted average indoor screening levels above 4 pCi/L.
Radon levels can vary from home to home, so EPA recommends testing the property to know its indoor level.
FEMA flood zones describe mapped flood hazards. Look up a specific address with FEMA.
Special Flood Hazard Area — 1% annual chance of flooding (100-year floodplain) with base flood elevation.
Results use an earlier stored RMP inventory. Current EPA ECHO location coverage is unverified.
No EPA ECHO RMP facility records with a usable location matched this city report.
PHMSA tracks incidents involving natural gas and hazardous liquid pipelines. Incidents include leaks, ruptures, and explosions.
No records dated within the last 5 years surfaced for this city report.
Reviewed: last 5 years
Data from PHMSA
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Mercer County, New JerseyPop. 380,688
County Health Rankings edition: 2024
Premature Death
Poor or Fair Health
Poor Physical Health Days
Poor Mental Health Days
Adult Smoking
Adult Obesity
Air Pollution - Particulate Matter
Drinking water violation indicator
Diabetes Prevalence
Life Expectancy
| Indicator | County | State | National |
|---|---|---|---|
| Premature Death | 7,414 | 6,516 | 7,972 |
| Poor or Fair Health | 14.2% | 14.0% | 14.2% |
| Poor Physical Health Days | 3.2 | 3.2 | 3.3 |
| Poor Mental Health Days | 4.5 | 4.4 | 4.8 |
| Adult Smoking | 13.5% | 10.8% | 15.0% |
| Adult Obesity | 23.6% | 28.3% | 34.0% |
| Air Pollution - Particulate Matter | 7.6 | 7.8 | 7.3 |
| Drinking water violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 9.4% | 8.8% | 9.6% |
| Life Expectancy | 78.7 | 79.2 | 77.6 |
This report does not have PFAS sample results for the candidate water systems in Princeton.
Check with the utility that serves your address for its testing results.
EPA drinking water records on this page list 104 violations for Trenton Water Works, including 3 marked active.
EPA drinking water records on this page list 1 violation for Hightstown Water Department.
EPA drinking water records on this page list 2 violations for Allentown Water Department.
Check your water bill to identify the utility serving your address. Ask that utility about current drinking water advisories.
Nearby EPA monitoring stations provide annual air quality measurements for Princeton.
The monitoring station at Bristol recorded an annual average of 16.6 Parts per billion for nitrogen dioxide in 2025.
The monitoring station at Bristol recorded an annual average of 0.045 Parts per million for ozone in 2025.
The monitoring station at Colliers Mills, Jackson (Township of), New Jersey recorded an annual average of 0.042 Parts per million for ozone in 2025.
Download 2025 EPA annual monitor dataCurrent air quality on AirNow
The radon data for Princeton covers Mercer County. EPA places this area in Zone 1, with a predicted average indoor radon screening level above 4 picocuries per liter.
This city report shows 2 Superfund sites: Higgins Disposal; Rocky Hill Municipal Well.
No brownfield sites were returned for this city report.
The county data for Princeton reports a life expectancy of 78.7 years in Mercer County, New Jersey.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Princeton reports 7,414 years of life lost to deaths before age 75 per 100,000 residents in Mercer County, New Jersey. This measure adds up the years lost to early deaths and adjusts for differences in population age.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Princeton lists fine-particle pollution (PM2.5) at 7.6 micrograms per cubic meter in Mercer County, New Jersey.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
Federal pipeline records list an incident involving Public Service Electric & Gas Co near Princeton on Mar 20, 2013. The reported release was natural gas.
Federal pipeline records list an incident involving Transcontinental Gas Pipe Line Company near Princeton on Oct 10, 2015. The reported release was natural gas.