近年来，美国环保局制定的联邦饮用水法规的数量和复杂性显著增加。对许多人来说，制定法规的过程是神秘的，无论是在机构内部还是外部。审查了法规制定的最低法律要求、美国环保局的内部监管流程和公众参与。

The number and complexity of federal drinking water regulations developed by the USEPA have increased significantly in recent years. The process by which regulations are developed is mysterious to many people, both inside and outside the agency. The minimum legal requirements for regulation development, USEPA's internal regulatory process, and public involvement are reviewed.