Water Testing Finder

Illinois directory

Illinois water testing laboratories

These listings are from the official Illinois certification list in this database snapshot. Illinois certification means the laboratory appears on that official list; a laboratory may be physically located outside Illinois. Certification does not confirm mail-in or residential service. Ask the lab before collecting a sample.

View the official source list

Labs for home testing: 11

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Decide what to ask for before you filter this list. Certification alone does not confirm that a lab accepts household samples.

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11 laboratories found

Labs for home testing (11)

Most listings do not confirm household service. Confirm with the lab before you collect a sample.

Official reference: EPA certified laboratory contacts. County health / Extension may offer cheap or free well tests.