The Light Imprint initiative is hosted by DPZ, and is an alternate system of stormwater management. The Light Imprint Handbook contains a treasure trove of devices that can cost millions less per neighborhood to implement, most of which can be used on a lot-by-lot scale in existing urbanism.
Why? Light Imprint measures are not only much less expensive than conventional stormwater management practices, but they are beautiful as well, while standard practices produce some of the ugliest infrastructure elements in a neighborhood.