Handyman Insurance, Constructed Wetlands for Treatment of Combined Sewer Overflows
Constructed wetlands an economic solution to sewer overflows. Washington, Indiana, didn’t have the cash to upgrade five combined sewer overflows (CSO) discharging into Hawkins Creek, a frequent occurrence due to limited storage capacity and the age of the CSO collection system.
Washington executed a more affordable alternative: It launched a $23.8-million project involving the capture of the CSO first flush in a 5-million-gallon storage tank—or less than the 1-year/1-hour storm event. From there, it is pumped to an existing waste water treatment plant to receive conventional treatment.