C41/100
Roslyn Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 17,000 residents · New York
What's In Roslyn's Tap Water?
66
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1996.
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
ROSLYN WD
Population Served
17,000
Water Source
Groundwater
System ID
NY2902851
Frequently Asked Questions About Roslyn Water
Is Roslyn tap water safe to drink?
Roslyn, New York tap water receives a grade of C (41/100), which is considered fair. 0 contaminant(s) exceed EPA maximum contaminant levels and 55 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Roslyn's water?
66 contaminants were tested in Roslyn's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Roslyn have any water quality violations?
Yes, Roslyn has 55 EPA violation(s) on record, with the most recent in 1996. Violation types include MR, MCL. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Roslyn?
Roslyn water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. All contaminants are within health goals.
Where does Roslyn's tap water come from?
Roslyn's drinking water is sourced from groundwater and supplied by ROSLYN WD. The system serves approximately 17,000 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Roslyn'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. Roslyn'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 Roslyn's water compare to other cities in New York?
Roslyn's water quality score of 41/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our New York state page to see how all cities in the state compare.
What should I do if I'm concerned about Roslyn's water quality?
If you have concerns about Roslyn'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 (ROSLYN WD) 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.