How is the groundwater protected when Biosolids are applied to agricultural lands?
Biosolids are applied at agronomic rates. This means that they are applied at a rate based on the fertilizer value of the Biosolids and the fertilizer demand of the crop. Soil samples are collected and sent to Kansas State University to determine the residual fertilizer in the soil and to determine the amount of Biosolids needed to supplement the demands of the crop type. No more is applied than needed ensuring protection of the groundwater and surface water.
