Illinois permits residential rainwater harvesting with no state-level restrictions. Will County and its municipalities encourage rain barrels for stormwater management in the Des Plaines, DuPage, Hickory Creek, and Kankakee River basins. Bolingbrook and Plainfield have offered rebate programs.
Illinois has no statewide restriction on rainwater harvesting for non-potable residential use. Rain barrels and cisterns for garden irrigation, lawn watering, and non-potable uses are permitted in all Will County municipalities. The Illinois Plumbing Code (77 Ill. Adm. Code 890) governs any connection to indoor plumbing and requires an Illinois-licensed plumber for systems supplying toilets, washing machines, or other indoor uses. The Illinois Green Infrastructure Grant (IEPA) funds stormwater projects including cisterns. Bolingbrook, Plainfield, and Romeoville have periodically offered rain-barrel rebates under MS4 permit programs tied to the Will County Stormwater Ordinance and the Illinois EPA NPDES general permit. HOA covenants may restrict visible rain-barrel placement but cannot outright ban them under Illinois common-interest community law. Potable use requires a state-approved treatment system and permit under the Illinois Department of Public Health plumbing inspection program.
No penalties for standard residential collection. Indoor-plumbing connection without licensed plumber: $500 to $2,500 and removal. Unpermitted large cisterns (>5,000 gal): municipal building code violation $100 to $500.
Will County, IL
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Will County, IL
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Will County, IL
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Will County, IL
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Will County, IL
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Will County, IL
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See how Will County's rainwater harvesting rules stack up against other locations.
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