Is NAPERVILLE's water safe to drink?

NAPERVILLE's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. It serves 156,406 people through 45,580 service connections.

NAPERVILLE's record against the rest of the country

NAPERVILLE has 18 violations on record in total, 0 of thems health-based - ranking it 10,057th of 12,903 systems by violation count, the 22th percentile nationally.

Against the IL average

NAPERVILLE's 0 health-based violations sit within the IL average of 5.0, across 560 systems statewide. The clean-record guide covers what a comparison like this can hide.

Most recent violation on record

NAPERVILLE's most recent violation on record is dated 2023-01-04. Last reported to EPA: 05/27/2026.

What NAPERVILLE's record does not cover

NAPERVILLE'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. This record - 0 health-based violations on file for NAPERVILLE - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.