Princeton Junction, NJ: High Radon Risk — 45/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
In recent EPA cycles, Princeton Junction shows a persistent below-average water quality pattern within NJ — documented violations span multiple service areas and have appeared consistently across reporting periods.
How Princeton Junction Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Princeton Junction Residents
- Homes built before 1986: 47% — older plumbing may contain lead solder.
- Estimated remediation: $3,600 per household.
- CDC health risk index: 10.58.
Princeton Junction's Water Providers
In Princeton Junction, NJ, the drinking water supply is organized under a single dominant utility — a consolidated structure that shapes how infrastructure investment, regulatory compliance, and rate decisions flow to households. When one provider handles the overwhelming share of residential connections out of 1 tracked system, accountability is clear: service upgrades, EPA violation responses, and tariff changes all funnel through that single organizational structure.
Overview
We track water quality and home safety data for 1 ZIP code in Princeton Junction, New Jersey (population ~20,876), covering 1 community water system serving approximately 217,000 people region-wide.
No EPA violations recorded across any ZIP codes in Princeton Junction — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Princeton Junction: D (45/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Princeton Junction water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Princeton Junction
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 08550 | D | TRENTON WATER WORKS | 217,000 |
All ZIP Codes in Princeton Junction
- 08550 [D]
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Princeton Junction Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Princeton Junction Infrastructure Age
With 47% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Prohibited from residential plumbing since 1986, lead solder divides Princeton Junction's housing stock along a timeline that the median build year of 1982 straddles. A meaningful share of homes predates the ban — a configuration that places moderate aggregate pressure on plumbing-related lead risk, distributed unevenly across neighborhoods.
Most homes in Princeton Junction were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Princeton Junction
In Princeton Junction, property values comfortably outpace what documented remediation typically costs — the equity share is proportionally low.
Remediation costs in Princeton Junction are relatively low compared to home values. The $2,400–$4,800 estimated range is a small fraction of median property value. Home values are 57% above the New Jersey average.
Princeton Junction: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Pulling a tap sample fills the gap that utility data cannot close, particularly here where 47% of housing dates from the pre-rule era and citywide monitoring sits at or above the regulatory mark in Princeton Junction.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Princeton Junction: Flood History & Water Damage Risk
Flood activity in Princeton Junction is neither negligible nor at the level of the highest-exposure areas in the NFIP dataset. The 46-claim record and 100% flood zone coverage suggest a community that has experienced recurrent events but has not faced the kind of sustained, severe exposure where water-supply contamination becomes a primary public health concern. It sits in a middle range where flood history merits inclusion in any complete local water quality picture.
Princeton Junction has a moderate flood history with 46 FEMA claims averaging $27,880 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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. Flood damage can add significantly to the estimated <strong>$3,600</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Princeton Junction
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 47% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Princeton Junction, NJ