Maryland permits residential rainwater harvesting without restriction. Anne Arundel County encourages rain barrels for stormwater management; rebate program periodically offered.
Maryland has no state-level restriction on rainwater collection for residential use. Anne Arundel County actively encourages rain barrels and cisterns as part of stormwater and Chesapeake Bay pollution reduction strategy. The County has offered rain barrel programs and rebates through the Watershed Protection & Restoration Program. Rain barrels up to 65 gallons generally need no permit. Larger cisterns (500+ gallons) may trigger building or plumbing permits. Potable indoor use requires treatment to meet MDH/health standards. HOAs may restrict visible placement. Critical Area properties receive stormwater credit for harvesting systems.
No penalties for standard barrels. Large cistern without permit: building code $100-$500.
Anne Arundel County, MD
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Anne Arundel County, MD
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Anne Arundel County, MD
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Anne Arundel County, MD
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Anne Arundel County, MD
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