A recent development in U.S. water regulation has significant implications for how utilities and engineers design treatment systems. The U.S. Environmental Protection Agency (EPA) has proposed a National Primary Drinking Water Regulation (NPDWR) for perchlorate, setting a Maximum Contaminant Level Goal (MCLG) and co-proposing enforceable Maximum Contaminant Levels (MCLs) of 20 µg/L, 40 µg/L, or 80 µg/L for perchlorate in drinking water. Perchlorate, used in rocket propellants, fireworks, flares, and found naturally in arid regions, has been under regulatory review for more than a decade due to potential health concerns, especially for sensitive [...]
