Wolfe Neck facility is the largest lagoon treatment and spray irrigation system in Delaware. The system uses naturally occurring microorganisms to purify wastewater in a series of lagoons. The reclaimed water is then recycled onto crop land.
Soil provides final filtration and crops uptake the remaining nutrients.
The renovated water returning to groundwater exceeds EPA drinking water standards. Through this natural recycling process, nutrient-laden wastewater is productively used on farmland instead of flowing to Delaware's environmentally fragile inland bays and waterways. Here, natural microorganisms break down the biological matter. Settable solids fall to the bottom of the lagoon and undergo anaerobic decay. The lagoons are 14 feet deep and are formed from earthen berms with a geocomposite liner and protective soil cover.