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Illinois tap water, by town.

412 towns, each with every utility EPA’s records tie to it and what its results show. Your ZIP code is the closest match.

Matched to your utility using EPA records.

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Towns are Census 2020 places and the communities utilities name to EPA. A town is listed here once it has its own ZIP codes and more than one utility, or a thousand people on EPA’s service area map; any other town can be found by name or ZIP code.

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