F0/100
Long Valley Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 8,444 residents · New Jersey
What's In Long Valley's Tap Water?
51
Contaminants Tested
2
Exceed EPA Limits
0
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOS | 0.010 µg/L | 0.004 µg/L | Over Limit |
PFOA | 0.006 µg/L | 0.004 µg/L | Over Limit |
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
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: October 1, 2023 – December 31, 2023Rule: Stage 1 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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
WASHINGTON TWP MUA-HAGER
Population Served
3,458
Water Source
Groundwater
System ID
NJ1438003
WASHINGTON TWP MUA-SCHOO
Population Served
4,986
Water Source
Groundwater
System ID
NJ1438004
Frequently Asked Questions About Long Valley Water
Is Long Valley tap water safe to drink?
Long Valley, New Jersey tap water receives a grade of F (0/100), which is considered failing. 2 contaminant(s) exceed EPA maximum contaminant levels and 174 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Long Valley's water?
Of the 51 contaminants tested in Long Valley's water supply, the most notable include PFOS, PFOA. 2 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 Long Valley have any water quality violations?
Yes, Long Valley has 174 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, RPT, MON. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Long Valley?
Based on EPA data, using a water filter in Long Valley 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 Long Valley's tap water come from?
Long Valley's drinking water is sourced from groundwater and supplied by WASHINGTON TWP MUA-HAGER and 1 other water system(s). The system serves approximately 8,444 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Long Valley'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. Long Valley'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 Long Valley's water compare to other cities in New Jersey?
Long Valley'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 Long Valley's water quality?
If you have concerns about Long Valley'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 (WASHINGTON TWP MUA-HAGER) 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.