OYSTER BAY WD: EPA violation history, explained
OYSTER BAY WD has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 8,700 people get their water from it, across 2,569 connections.
How this compares nationally
3 total violations and 2 health-based ones put OYSTER BAY WD at the 46th percentile nationally for violation burden, rank 7,013 of 12,903.
How OYSTER BAY WD compares within NY
Among the 443 NY systems in this dataset, the average is 4.1 health-based violations - OYSTER BAY WD's 2 is at or below that. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
The last violation EPA has on record for OYSTER BAY WD is from 2019-01-01 (health-based: 2007-01-11). Last reported to EPA: 06/25/2026.
What kind of problem, specifically
OYSTER BAY WD's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What this data is and is not
This is what OYSTER BAY WD reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. Between the utility's meter and OYSTER BAY WD's customers' taps is household plumbing, invisible to a system-level record ranked 7,013th of 12,903 by violation count. The guide to what this data misses covers that gap.