U.S. cities are revamping how they handle stormwater to reduce flooding and capture rainfall and recharge aquifers.
New policies reflect a change in mindset from treating stormwater as a nuisance to be quickly diverted away to capturing it as a resource. U.S. urban areas generate an estimated 59.5 million acre-feet of stormwater runoff per year on average, equal to 53 billion gallons a day. That much water is equal to 93% of the country’s total municipal and industrial water use.
In Los Angeles, the nonprofit Trust for Public Land has been removing impervious surfaces in alleys and school grounds and replacing asphalt with natural infrastructure, including trees and pervious surfaces.
In the eastern part of the country where rainfall is more plentiful, cities including New York and Pittsburgh are installing green solutions such as rain gardens and bioswales. Cities are also instituting stormwater fees, charging landowners based on the area of impervious surfaces on a property. More cities are also using permeable pavers for sidewalks and parking lots.
Recharging aquifers via more permeable surface areas not only makes more groundwater available, but it also helps prevent land subsidence that can cause buildings to slowly sink.
Related Stories
Codes and Standards | Aug 30, 2017
Stormwater runoff mitigation pays off for some building owners
Rain gardens, green roofs, cisterns, and rainwater recycling add value.
Codes and Standards | Aug 28, 2017
Commercial properties address state carbon-reduction policies
EV charging stations, batteries, and microgrid technology are all part of effort to meet demand for cleaner power.
Codes and Standards | Aug 24, 2017
OSHA silica dust exposure enforcement begins Sept. 23
Vacuum dust collection, water-delivery systems, and respirators will be required.
Codes and Standards | Aug 18, 2017
Cool roofs may increase air pollution
California’s requirement for cool roofs on new non-residential buildings could promote smog.
Codes and Standards | Aug 17, 2017
Black market sales of OSHA training certifications plague New York City construction industry
Task force formed to get fake training cards off the streets and workers properly trained.
Codes and Standards | Aug 16, 2017
Big changes coming to Ontario building code
Proposals include solar-ready roofs, more stringent heating/cooling efficiency requirements, and graywater reuse.
Codes and Standards | Aug 15, 2017
ASHRAE certifications recognized by DOE as meeting Better Buildings Workforce Guidelines
Two of six such certifications are ASHRAE programs.
Codes and Standards | Aug 14, 2017
New edition of AISC Steel Construction Manual now available
Includes the 2016 Specification for Structural Steel Buildings.
Codes and Standards | Aug 10, 2017
AAMA releases updated Standard Test Method for Water Penetration Using Dynamic Pressure
The update applies to windows, curtain walls, and doors.
Codes and Standards | Aug 9, 2017
UpCodes aims to make researching building codes, regulations easier through searchable app
App currently includes building codes of 40 states and New York City.
