MD HB1621

Department of Environment must monitor wastewater treatment plant effluent for hormones, PFAS (per- and polyfluoroalkyl substances), and bacteria, and evaluate whether discharges exceed permit limits

Plants processing 50+ million gallons per day must report staffing/management plans to the General Assembly every 6 months starting June 30, 2027, maintain public websites with daily bacteria data, and post test results within 24 hours of bypasses or treatment failures

Plants exceeding bacterial action levels or discharging hormones, PFAS, or bacteria beyond permit limits for 2 consecutive months are barred from participating in the Water Quality Trading Program for the remainder of their permit period

Notification of sewer overflows or treatment plant bypasses to downstream jurisdictions, county governments, and state agencies must be immediate rather than "within a reasonable time"

Department must establish a publicly searchable database listing all industrial pretreatment permit holders, their discharged pollutants, compliance status, and enforcement actions taken