DrinkingWaterCheck

Is SUFFOLK COUNTY WATER AUTHORITY's water safe to drink?

SUFFOLK COUNTY WATER AUTHORITY has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 1,100,000 people get their water from it, across 336,418 connections.

Ranked against every other system in this dataset

13 total violations and 3 health-based ones put SUFFOLK COUNTY WATER AUTHORITY at the 60th percentile nationally for violation burden, rank 5,165 of 12,903.

How SUFFOLK COUNTY WATER AUTHORITY compares within NY

NY's 443 covered systems average 4.1 health-based violations each; SUFFOLK COUNTY WATER AUTHORITY carries 3, not more than typical for the state. The clean-record guide covers what a comparison like this can hide.

Most recent violation on record

The last violation EPA has on record for SUFFOLK COUNTY WATER AUTHORITY is from 2020-01-07 (health-based: 2020-01-07). Last reported to EPA: 06/25/2026.

What kind of problem, specifically

SUFFOLK COUNTY WATER AUTHORITY'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:

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

SUFFOLK COUNTY WATER AUTHORITY's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Between the utility's meter and SUFFOLK COUNTY WATER AUTHORITY's customers' taps is household plumbing, invisible to a system-level record ranked 5,165th of 12,903 by violation count. The guide to what this data misses covers that gap.