Clarifies the state and federal water permitting exemption for nonpoint sources in Missouri clean water law

HB 3076 clarifies Missouri's water pollution rules by specifying when agricultural and industrial wastewater storage systems do not require state permits. It exempts earthen basins storing non-toxic soil/silt materials from construction permits and clarifies that certain agricultural wastewater storage (like basins holding nonmetallic materials) is not subject to federal permitting. The bill also establishes buffer distances between large wastewater storage basins (over 500,000 gallons) and homes/residences, and mandates annual testing for metals and bacteria in commingled industrial wastewater storage. This directly affects farms, fertilizer producers, and industrial facilities managing wastewater storage.