F10/100
Monmouth Junction Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 45,450 residents · New Jersey
What's In Monmouth Junction's Tap Water?
69
Contaminants Tested
1
Exceed EPA Limits
1
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOA | 0.023 µg/L | 0.004 µg/L | Over Limit |
chlorate | 327.00 µg/L | — | Above Goal |
EPA Violation History
3
Violations (last 5yr)
2
Unresolved
1
Health-Related
TIER 3Unresolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: December 1, 2024 – February 28, 2025Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: December 1, 2024 – February 28, 2025Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Resolved
Public notification violation
When: July 1, 2022 – December 31, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
SOUTH BRUNSWICK TWP W DI
Population Served
45,450
Water Source
Purchased Surface Water
System ID
NJ1221004
Frequently Asked Questions About Monmouth Junction Water
Is Monmouth Junction tap water safe to drink?
Monmouth Junction, New Jersey tap water receives a grade of F (10/100), which is considered failing. 1 contaminant(s) exceed EPA maximum contaminant levels and 75 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Monmouth Junction's water?
Of the 69 contaminants tested in Monmouth Junction's water supply, the most notable include PFOA, chlorate. 1 contaminant(s) exceed EPA legal limits (MCLs). 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Monmouth Junction have any water quality violations?
Yes, Monmouth Junction has 75 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, TT, RPT. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Monmouth Junction?
Based on EPA data, using a water filter in Monmouth Junction is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Monmouth Junction's tap water come from?
Monmouth Junction's drinking water is sourced from purchased surface water and supplied by SOUTH BRUNSWICK TWP W DI. The system serves approximately 45,450 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Monmouth Junction's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Monmouth Junction's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Monmouth Junction's water compare to other cities in New Jersey?
Monmouth Junction's water quality score of 10/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our New Jersey state page to see how all cities in the state compare.
What should I do if I'm concerned about Monmouth Junction's water quality?
If you have concerns about Monmouth Junction's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (SOUTH BRUNSWICK TWP W DI) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.