Anyone who has ever watched the news during a storm event has seen the challenge that communities are facing—the flooding created by stormwater can be devastating, not to mention the polluted runoff contaminating waterways.
“This is a big struggle with cities, with climate change and requirements of the Clean Water Act, there are real investments that need to be made in the infrastructure,” National Municipal Stormwater Alliance (NMSA) chair Scott Taylor said from his California office last week.
Stormwater happens to be the only growing source of water pollution in many waterways, the ASCE said. “With urban populations growth and development, in addition to more frequent and intense storms nationwide, there is mounting pressure on stormwater infrastructure,” the ASCE press release noted.
“We need effective stormwater management that can treat stormwater as a beneficial resource, putting the water to work where it’s needed most. Including stormwater infrastructure as a report crd category will help policymakers get a better handle on the magnitude of the problem across the United States and how we can move forward in taking advantage of this valuable resource,” said Eric Loucks, P.E., of the ASCE Environmental & Water Resources Institute (EWRI) governing board.
Taylor said one of the most important things adding the stormwater category to the report card will help do is increase education about the problem.
“Stormwater infrastructure protects our communities from flooding and our waterways from pollution,” Taylor said. “Grading the nation’s stormwater infrastructure increases its visibility and helps communities get the resources needed to improve their stormwater programs.”
Taylor explained that stormwater systems are set up differently in different areas of the country. East of the Mississippi River, most stormwater goes into the sewage system and is discharged through the sanitary sewage system. In the West, the sewage and stormwater systems are typically separate. However, whether the system is combined or separated, neither option has typically been designed to treat stormwater.
“So, there’s a big investment that will need to be made; the public has to be educated as to what stormwater systems are, and if it’s not treated, how it’s going to cause problems in the environment,” Taylor said.
Pump stations are also important, Taylor said, because stormwater pump stations can send it to the sewage treatment plant instead of just out to the stream.
The NMSA does a lot of work pushing for source control, Taylor said, trying to limit pesticides and fertilizers, encourage people to pick up after pets—all of which are just some of the pollutants found in stormwater.
The Water Environment Foundation (WEF) Stormwater Institute led an effort, supported by NMSA, to gather the first-ever analysis of the U.S. stormwater sector needs. The analysis revealed an estimated $7.5 billion annual funding gap and identified top priorities and challenges across the country.
This inaugural survey, the Municipal Separate Storm Sewer System (MS4) Needs Assessment Survey, reflects an effort to learn more about the nature and needs of the MS4 sector at a scale that has never been attempted and will assist analysis for the 2021 Infrastructure Report Card, the ASCE’s press release said.
“The inclusion of stormwater infrastructure in the ASCE’s report card will provide a much-deserved boost in visibility for infrastructure that is vital to communities across the country,” WEF executive director Eileen O’Neill said. “We hope that adding stormwater to the report card will result in more resources and focus being directed to this essential part of our infrastructure, and subsequent improvements to water quality.”
The ASCE Infrastructure Report Card is issued once every four years, and the next one will be released in March 2021.
ASCE’s 2017 Infrastructure Report Card rated the overall condition of the nation’s infrastructure a cumulative grade of D+ with an investment gap of $2 trillion. ASCE’s inclusion of a stormwater chapter reflects increased interest in stormwater infrastructure by decision-makers to provide for the public sustainable solutions to the problems of flooding and water pollution.
ASCE’s state report card committees have periodically graded stormwater infrastructure - most recently, in California, Georgia, Nevada, Pennsylvania and Washington. The stormwater chapters in these states have recommendations to modernize stormwater infrastructure to better prepare for the future and ultimately raise the grades.