Unified Stormwater Rule

rain water flowing down a street and into a rain garden

The proposed Unified Stormwater Rule amendments were publicly reviewed then published as final on February 15, 2022. This Rule includes amendments to Chapter 31 and Chapter 19.1 of Rules of the City of New York, changing requirements for how stormwater is managed on all new and redevelopment sites that discharge to City sewers. 

Download a list of Unified Stormwater Rule Frequently Asked Questions and Responses compiled during the public comment period.