Maryland MDE establishes PFAS action levels and monitoring requirements for Significant Industrial Users

Pursuant to Maryland SB 0956 (2024), MDE has identified Significant Industrial Users (SIUs) that currently and intentionally use PFAS chemicals and established PFAS monitoring and testing protocols for identified SIUs, effective January 1, 2025. The document details PFAS action levels for SIUs operating under pretreatment permits that discharge wastewater into sanitary sewer systems. MDE's Pretreatment Program has established monitoring requirements and testing protocols for facilities using PFAS chemicals.