Is AQUA ILLINOIS-OAK BROOK's water safe to drink?

AQUA ILLINOIS-OAK BROOK has no violations on record in EPA's SDWIS data. Population served: 5,361, over 2,021 connections.

How this compares nationally

0 total violations and 0 health-based ones put AQUA ILLINOIS-OAK BROOK at the 1th percentile nationally for violation burden, rank 12,737 of 12,903.

Against the IL average

Among the 560 IL systems in this dataset, the average is 5.0 health-based violations - AQUA ILLINOIS-OAK BROOK's 0 is at or below that. See the lead and copper guide for why lead counts differently.

Why "no violations" needs a caveat here

AQUA ILLINOIS-OAK BROOK serves 5,361 people. EPA requires smaller systems to test less often than large ones, so a clean record here is real but weaker evidence than the same record on a system serving hundreds of thousands - fewer tests means fewer chances to catch a problem. See the guide to reading a clean record for what that does and does not tell you.

What AQUA ILLINOIS-OAK BROOK's record does not cover

AQUA ILLINOIS-OAK BROOK'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 0 logged violations can see. The guide to what this data misses covers that gap.