CITY REPORT NJ

Princeton Junction, NJ: High Radon Potential Area - Home Safety 50/100

1 ZIP code · 1 water system · Updated

ZipCheckup grade for Princeton Junction: D.

Federal records show several conditions worth reviewing.

If you live in Princeton Junction, NJ, the lower-tier grade here is a signal to check the water system that serves your address and, if you have concerns, to test your own tap.

How Princeton Junction Compares

Princeton Junction50/100
New Jersey avg61/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
0
ZIPs Linked to Systems with Violations
D · 50
Avg Safety Score
Zone 1
County Radon Potential (High)
$759K
Median Home Value
$500
Est. Remediation (0.1% of home value)

Key Facts for Princeton Junction Residents

  • Average of reported 90th-percentile lead results: 0.002 mg/L.
  • Homes built before 1986: 47% - older plumbing may contain lead solder.
  • Estimated remediation: $500 per household.
  • Health risk index (ZipCheckup composite of CDC data): 10.58.

Princeton Junction's Water Providers

One water system is listed below for Princeton Junction, NJ; federal data link 1 to the area overall.

Overview

We track home safety data for 1 ZIP code in Princeton Junction, New Jersey (population ~20,876), covering 1 community water system serving approximately 615,430 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

The available EPA record reports 0 violations for 1 ZIP code with a reported violation count.

Home Safety Score

Average Home Safety Score for Princeton Junction: D (50/100)

Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:

Factor What It Measures
Water Quality EPA violations and compliance history
PFAS MCL Screen UCMR 5 testing against the covered federal MCLs
Radon Risk EPA radon zone classification
Annual AQI EPA AirData county-year median with at least 90 observed days

Water Sources

Princeton Junction water systems draw from: Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0020 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

1 of 1 ZIP records with known zones is in EPA Radon Zone 1.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Areas with No Violations

ZIP Code Safety Score System Population
08550 D Nj American Water - Raritan 615,430

All ZIP Codes in Princeton Junction

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Princeton Junction Community Health Snapshot

9%
Asthma (US: 9.8%)
11.1%
Diabetes (US: 10.4%)
14.5%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.

Compared to National Average

Asthma 9% ↓
Diabetes 11.1% ↑
Mental Health 14.5% ↓

Vertical line = national average. ■ Above national · ■ Below national

Princeton Junction Infrastructure Age

1982
Median Build Year
47%
Built Before 1986
17%
Built Before 1970
Copper
Likely Pipe Material

With 47% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

A citywide median of 1982 for construction says little about any single address in Princeton Junction. Homes built before 1986, when federal amendments restricted the lead content allowed in new pipe, solder and flux, may contain plumbing materials with more lead, and later renovations may have replaced them. An inspection of the plumbing can identify the materials, and sending a tap water sample to an accredited laboratory measures lead.

1982
Median Year Built
47%
Pre-1986 (lead solder era; lead paint banned 1978)
17%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (17%) 1970–1986 (30%) Post-1986 (53%)

Most homes in Princeton Junction were built after 1986; lead exposure at a tap still depends on its service line and plumbing. Older homes should still be tested.

Source: U.S. Census Bureau ACS B25034.

How Remediation Costs Compare in Princeton Junction

Compared with typical property prices, the remediation estimate for Princeton Junction is small in percentage terms - at or under one percent.

Median Home Value
$758,900
Est. Remediation
$500
Remediation as % of home value 0.1%

Estimated remediation costs in Princeton Junction can be compared with local home values. The $300–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 57% above the New Jersey average.

Princeton Junction: Lead Risk & Vulnerable Populations

47%
Homes Built Before 1986
0.002
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Princeton Junction: NFIP Claim Records and Water-Quality Context

46
Total FEMA Flood Claims
$38,864
Avg Reported Sum With Payment Data
0%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Princeton Junction contains 46 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $38,864. Among ZIP codes with claim records, 0% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.

How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The $500 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.

Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.

Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.

What You Can Do in Princeton Junction

  1. Test your water at home. City-level data shows averages - your tap may differ. Check the certification, price and turnaround time of any water test kit or lab service.
  2. Install a certified water filter. Choose a pitcher or under-sink filter certified to reduce the specific contaminants of concern.
  3. Check your home's plumbing. With 47% of homes built before 1986, lead solder is a real possibility.
  4. Review your water system's CCR. If you use a community water system, request its annual Consumer Confidence Report for system-level test results or find it online.

Deep Dive Reports

Detailed analysis for Princeton Junction, NJ

Frequently Asked Questions

What does the Home Safety Score mean for Princeton Junction, NJ?
Princeton Junction has an average Home Safety Score of 50/100 (Grade D) under ZipCheckup model 4.0.0, an area-level model that draws on EPA water compliance records, PFAS screening, EPA radon zones, and annual EPA air quality data; see the methodology page for how inputs and coverage are handled. The available EPA record reports no violations for ZIP codes with reported counts. Check individual ZIP code reports for component details.
Does Princeton Junction water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Princeton Junction is 0.002 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How does Princeton Junction compare to New Jersey average?
Princeton Junction has an average Home Safety Score of 50/100, which is below the New Jersey state average of 61/100 for the same model series.
How many water systems serve Princeton Junction?
Our records map 1 water system to 1 ZIP code in Princeton Junction. The related population figure in our data is approximately 20,876 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Princeton Junction?
Estimated remediation cost per household in Princeton Junction: $500; modeled range $300 to $800. Estimated costs may include filtration, pipe replacement, radon mitigation, or flood protection where applicable.
Home → Cities → New Jersey → Princeton Junction, NJ

How to cite this page

APA ZipCheckup. (2026). Princeton Junction, NJ: High Radon Potential Area - Home Safety 50/100. https://zipcheckup.com/cities/nj/princeton-junction/
BibTeX 
@misc{zipcheckup-cities-nj-princeton-junction,
  author = {{ZipCheckup}},
  title  = {{Princeton Junction, NJ: High Radon Potential Area - Home Safety 50/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/nj/princeton-junction/}
}

Page version: October 2026.

Get safety alerts for Princeton Junction, New Jersey

Free updates when EPA data changes for this area. No spam.

Unsubscribe anytime. Privacy Policy.

Share This Page

X Facebook
Check your water filter options Free tool - no phone call required.