Sufflok County Drinking Water Quality Report 2025
The Suffolk County Water Authority (SCWA) carried out comprehensive water quality monitoring throughout 2024, conducting more than 195,000 tests on nearly 96,000 samples and generating over 1.79 million analytical results. Water was tested at the wellhead, during treatment, and across the distribution system for hundreds of regulated and emerging contaminants. SCWA continues to meet—and often exceed—all state and federal drinking water standards, including proactive progress toward future EPA limits for PFAS compounds years ahead of required deadlines.
The report explains how to read and understand water quality data, detailing detected compounds, health-based standards, and likely sources. It emphasizes ongoing monitoring of PFAS, pharmaceuticals, personal care products, disinfectants, and naturally occurring substances, while highlighting the role of advanced treatment technologies such as granular activated carbon and system blending. The report also underscores the importance of source water protection, public education, and responsible pharmaceutical disposal.