Incentives, rather than rules alone, favored by many municipalities to reduce flow from private property. Often administered by stormwater utilities.
Despite challenges in formulating effective rules, a substantial number of states and municipalities have established credit systems as part of their stormwater management programs. Vermont allows the site designer to subtract conservation areas or areas treated by a LID practice from the total site area or impervious area when computing the water quality volume and/or recharge volume.
This study documents incentives and credit systems developed by both states and municipalities around the nation — a primer on what works where, how and why.