WEF Highlights

In high school, many students can become overwhelmed with career options and second-guess their choices. Not Vernon Azevedo. In 1970, as a senior at Lafayette High School in Lexington, Ky., Vernon found answers to those big life questions in less than 10 minutes. During a meeting with his guidance counselor, Mrs. Markley, Vernon admitted that […]

The Water Environment Federation (WEF; Alexandria, Va.) Collection Systems Committee has released the fact sheet, “Sanitary Sewer Systems: Rainfall-Derived Inflow and Infiltration Modeling.” Rainfall-derived infiltration and inflow (RDII) is a known cause of sanitary sewer overflows. RDII simulation models help characterize system wet weather responses, evaluate needs, and predict performance within infiltration and inflow reduction […]

In September, the Water Environment Federation (WEF; Alexandria, Va.) Collection Systems Committee released a fact sheet on reducing private property infiltration and inflow (PPII). Infiltration and inflow of stormwater and groundwater into sanitary sewers can overwhelm the sewers’ capacity and cause overflows. Sewer laterals, which connect buildings on private property to sewer mains, can be […]

Go online to get an up close and personal view of a giant tunnel and expansive green roof. These two components of DC Water’s (Washington, D.C.) Clean Rivers Project were the subject of a Nov. 19 virtual field trip. EarthEcho (Washington, D.C.) conducted “Virtual Field Trip: Managing Stormwater with DC Water.” Classrooms logged on and […]

WEF members work to solve nondispersibles problem   Wastewater treatment systems operate 24-hours a day, 7-days a week — that is, until an item that doesn’t belong makes its way into the system, clogging pipes and causing headaches for operators. Defining nondispersibles Perpetrators mucking up the system are known as “nondispersibles,” which currently means anything […]