Maryland's new law setting limits on PFAS in sewage sludge spread across farmland is drawing criticism from environmental and public health advocates who say the thresholds are set high enough that most wastewater plants in the state already meet them.
The legislation, enacted as Senate Bill 719 and House Bill 925, prohibits land application of biosolids containing a combined concentration of regulated PFAS at or above 50 parts per billion, with that prohibition taking effect October 1, 2028. Material testing at 25 parts per billion or higher may still be applied, but only under alternate management measures with source tracking and a state-approved mitigation plan.
