NYC encourages rainwater harvesting through DEP's Green Infrastructure Plan and offers incentives through the Stormwater Management Program. No permit is required for residential rain barrels. The city distributes free rain barrels through community programs and GrowNYC.
NYC actively promotes rainwater harvesting as part of its Green Infrastructure Plan to reduce combined sewer overflows. The DEP has invested over $1 billion in green infrastructure since 2012. Residential rain barrels (typically 55 gallons) do not require permits and are distributed free through GrowNYC and other city partners. Larger rainwater harvesting systems on commercial or institutional buildings may require DEP approval and DOB permits if they connect to plumbing systems. The city's Stormwater Management Rules (15 RCNY Chapter 31) require new development and major renovations on sites over 20,000 sq ft to manage stormwater on-site, often through green roofs, rain gardens, or cisterns. NYC Building Code permits non-potable rainwater reuse for toilet flushing, irrigation, and cooling with appropriate treatment systems approved by DOB and DEP. The NYC Green Roof Tax Abatement provides property tax credits for installing green roofs.
No penalties for residential rain barrel use. Commercial systems installed without permits: DOB violation penalties of $2,500–$25,000. Failure to meet stormwater management requirements on new development: stop-work orders and fines.
New York, NY
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