What's in ZION's water?

ZION's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. It serves 24,442 people through 7,080 service connections.

How this compares nationally

ZION has 6 violations on record in total, 0 of thems health-based - ranking it 10,926th of 12,903 systems by violation count, the 15th percentile nationally.

Against the IL average

IL's 560 covered systems average 5.0 health-based violations each; ZION carries 0, not more than typical for the state. The clean-record guide covers what a comparison like this can hide.

Most recent violation on record

ZION's most recent violation on record is dated 2025-01-07. Last reported to EPA: 05/27/2026.

What ZION's record does not cover

ZION'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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 6 logged violations can see. The guide to what this data misses covers that gap.