F0/100
Cedar Knolls Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 62,349 residents · New Jersey
What's In Cedar Knolls's Tap Water?
76
Contaminants Tested
2
Exceed EPA Limits
1
Above EPA Goals
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOA | 0.009 µg/L | 0.004 µg/L | Over Limit |
PFOS | 0.006 µg/L | 0.004 µg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2022 – July 29, 2022Enforcement: 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
SOUTHEAST MORRIS COUNTY MUA
Population Served
62,349
Water Source
Surface Water
System ID
NJ1424001
Frequently Asked Questions About Cedar Knolls Water
Is Cedar Knolls tap water safe to drink?
Cedar Knolls, New Jersey tap water receives a grade of F (0/100), which is considered failing. 2 contaminant(s) exceed EPA maximum contaminant levels and 388 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Cedar Knolls's water?
Of the 76 contaminants tested in Cedar Knolls's water supply, the most notable include PFOA, PFOS, Lead (90th percentile). 2 contaminant(s) exceed EPA legal limits (MCLs). 3 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Cedar Knolls have any water quality violations?
Yes, Cedar Knolls has 388 EPA violation(s) on record, with the most recent in 2022. Violation types include Other, MR, MCL. 2 of these are health-based violations, which are the most serious category.
Do I need a water filter in Cedar Knolls?
Based on EPA data, using a water filter in Cedar Knolls is recommended. 2 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 Cedar Knolls's tap water come from?
Cedar Knolls's drinking water is sourced from surface water and supplied by SOUTHEAST MORRIS COUNTY MUA. The system serves approximately 62,349 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Cedar Knolls'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. Cedar Knolls'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 Cedar Knolls's water compare to other cities in New Jersey?
Cedar Knolls's water quality score of 0/100 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 Cedar Knolls's water quality?
If you have concerns about Cedar Knolls'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 (SOUTHEAST MORRIS COUNTY MUA) 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.