HB925 establishes a new regulatory framework for sewage sludge and products containing sewage sludge that are intended for land application in Maryland, with a focus on per- and polyfluoroalkyl substances (PFAS), especially PFOA and PFOS. Beginning on the bill’s effective timeline, sewage sludge with a total concentration of regulated PFAS at or above 50 parts per billion may not be applied to agricultural or marginal land. Material with PFAS concentrations between 25 and 50 parts per billion may still be land-applied, but only under temporary management measures, including lower application rates, setback requirements, and advance notice to affected landowners and local governments.
The bill also requires sewage sludge generators whose material tests at or above 25 parts per billion to conduct source-tracking studies and develop mitigation plans aimed at reducing PFAS levels below 25 parts per billion. Those plans may include pretreatment controls on industrial users, treatment at points of entry, or system-wide treatment solutions, and the Department of the Environment is given authority to review, approve, deny, or modify the plans. The bill further establishes monitoring protocols, including quarterly sampling and approved laboratory methods, and allows limited blending or commingling of sludge from multiple sources under specified conditions to reduce PFAS concentrations.
HB925 amends the Environment Article’s definitions of “sewage” and “sewage sludge generator” and adds a new section governing PFAS in sewage sludge land application. It also authorizes the Department of the Environment and pretreatment authorities to establish pretreatment standards for industrial users discharging PFAS above action levels, and it permits local jurisdictions or pretreatment authorities to set rates and fees for industrial users whose discharges require mitigation. In effect, the bill expands state oversight of wastewater residuals and creates new compliance obligations for treatment plants, industrial dischargers, laboratories, land applicators, and local wastewater authorities.
The general sentiment reflected in the voting history appears strongly supportive, with the bill passing the House 125-7 and the Senate 43-0. No committee transcript excerpts were provided, so there is no recorded debate to indicate formal opposition in the materials supplied. The broad bipartisan vote suggests consensus around addressing PFAS contamination risks in sewage sludge, particularly concerns about land application and downstream impacts on soil, groundwater, and drinking water.
The main points of contention inherent in the bill are likely the compliance burden and cost of testing, source tracking, mitigation, and potential treatment upgrades, especially for sewage sludge generators and publicly owned treatment works. The bill also creates tension between allowing limited interim land application and imposing stricter long-term PFAS limits, as well as between state oversight and local authority over industrial pretreatment and fee-setting. Another practical issue is the use of blending or commingling to reduce measured concentrations, which is permitted only under narrow conditions and subject to monitoring and notification requirements.
HB925 adds a new PFAS-specific regulatory regime to Maryland’s Environment Article governing the land application of sewage sludge and sewage-sludge-derived products. It imposes concentration thresholds, monitoring standards, notice requirements, source-tracking and mitigation obligations, and enforcement tools that can bar land application when a generator is out of compliance. The bill also expands the authority of the Department of the Environment, pretreatment authorities, and local jurisdictions to regulate industrial PFAS discharges and recover related costs through rates and fees, affecting wastewater utilities, industrial users, land applicators, and nearby landowners and local governments.
The bill appears to have enjoyed strong overall support, as reflected by overwhelming passage in both chambers: 125-7 in the House and 43-0 in the Senate. The absence of recorded committee transcript excerpts limits direct insight into debate, but the vote totals indicate broad agreement on the need to address PFAS contamination in sewage sludge. The policy direction is generally precautionary and environmental-protective, with legislators endorsing tighter controls rather than leaving the issue to existing sludge rules alone.
The likely areas of contention are the costs and operational burdens imposed on sewage sludge generators, wastewater treatment plants, and industrial users that may be required to reduce PFAS inputs or install treatment. Stakeholders may also differ over the bill’s phased approach, which allows limited application of sludge in the 25-50 ppb range while requiring mitigation and eventual reduction below 25 ppb. Additional friction points include the authority to set local pretreatment limits and fees, the technical feasibility of source tracking and treatment, and the practical implications of blending or commingling sludge to meet regulatory thresholds.