Iselin
Is Iselin tap water safe to drink?
Use extra caution — Iselin scores 47/100. This report aggregates EPA drinking water data across 2 local systems in Iselin. We found 285 total violations (30 unresolved).
Real-Time Environment
Live: 11:00 AM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Iselin.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Iselin?
Expert Advice
Given the safety margin, a Carbon Block or sediment filter is recommended to improve taste and remove trace particulates.
Buying a Filter?
Filtration technologies matched to Iselin contaminant records.
Baby Formula Safety
Guidance on preparing infant formula using municipal tap water in Iselin.
Homebuyer's Perspective
Municipal water quality in Iselin directly influences pipe corrosion rates and home filtration needs. With a score of 47/100, we recommend budgeting for high-quality point-of-entry filtration systems to protect your home's value.
Health & Family Safety
Residents should monitor Lead (90th percentile) levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.
View Health Risk Glossary →Compliance Record for Iselin
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Iselin.
Frequently Asked Questions
Is Iselin tap water safe to drink?
Use extra caution — Iselin scores 47/100.
How many water systems serve Iselin?
Iselin is served by 2 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Iselin?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Iselin.
What is the water quality score for Iselin?
The water quality score for Iselin is 47 out of 100, based on EPA contaminant data, violation history, and testing results across the 2 systems serving the city.
What are the top contaminants in Iselin?
The top contaminants detected in Iselin include Lead (90th percentile). View detailed information on our contaminants page.
Iselin Water Quality Summary
Iselin, NJ receives a water quality score of 47/100 (Grade D) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 2 public water systems serving the area.
Iselin's water quality score is below the national average, indicating a history of EPA violations or elevated contaminant levels. Residents are encouraged to check their specific water system report and consider additional filtration.
Iselin's score of 47 is 19 points below the New Jersey state average of 66, and below the nationwide average of roughly 78/100 across all U.S. states.
For home buyers looking at this mid-size New Jersey city, the local tap water delivers reassuringly high quality despite the challenges of the Mid-Atlantic region's industrial legacy and dense, older infrastructure. A sole water system manages the municipal supply for Iselin, keeping safety ratings consistently outstanding. This strong performance suggests that while the surrounding area features aged urban and suburban utility networks, the local purification and delivery processes are highly effective.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our New Jersey water quality rankings report →
Key Contaminants
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Water Systems Serving Iselin (2)
Check Your Specific Address
Water quality can vary by neighborhood in Iselin.
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