Is WILLIAMSVILLE's water safe to drink?

WILLIAMSVILLE's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. It serves 6,198 people through 2,678 service connections.

How this compares nationally

2 total violations and 0 health-based ones put WILLIAMSVILLE at the 7th percentile nationally for violation burden, rank 12,040 of 12,903.

Against the IL average

Among the 560 IL systems in this dataset, the average is 5.0 health-based violations - WILLIAMSVILLE's 0 is at or below that. The filter guide explains what a violation like this actually calls for.

Most recent violation on record

WILLIAMSVILLE's most recent violation on record is dated 2025-01-01. Last reported to EPA: 05/27/2026.

What WILLIAMSVILLE's record does not cover

Everything on this page is WILLIAMSVILLE's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 2 logged violations can see. The guide to what this data misses covers that gap.