F0/100
OSSINING WATER DEPARTMENT — Water Quality Report 2026
Serving 30,000 people · New York
Water Source
Surface Water
County
—
System ID
NY5903451
Violations
87
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOA | 0.004 µg/L | 0.004 µg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
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: April 1, 2022 – June 30, 2022Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
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: April 1, 2022 – June 30, 2022Rule: Stage 2 DBPREnforcement: 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
Frequently Asked Questions About OSSINING WATER DEPARTMENT
Is OSSINING WATER DEPARTMENT water safe to drink?
OSSINING WATER DEPARTMENT water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 87 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has OSSINING WATER DEPARTMENT detected?
76 contaminants were tested in OSSINING WATER DEPARTMENT's water. Notable contaminants include PFOA, Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does OSSINING WATER DEPARTMENT have any EPA violations?
Yes, OSSINING WATER DEPARTMENT has 87 EPA violation(s) on record, with the most recent in 2022. Violation types include MR, TT. 3 are health-based violations.
How many people does OSSINING WATER DEPARTMENT serve?
OSSINING WATER DEPARTMENT serves approximately 30,000 people, New York. The system provides water to 1 community: Ossining (T).
What type of water does OSSINING WATER DEPARTMENT provide?
OSSINING WATER DEPARTMENT sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is NY5903451.
How does OSSINING WATER DEPARTMENT compare to other utilities in New York?
OSSINING WATER DEPARTMENT scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our New York state page for a full comparison of water systems.