Local MS4 Regulations/Ordinances

The 2017 general permit requires municipalities to pass several "legal authorities" or ordinances. These include establishing authority to prohibit and eliminate illicit discharges, requiring low impact development be considered before other practices for managing stormwater runoff, and managing & inspecting stormwater runoff from construction sites.


Although 2004 MS4 program were already required to establish authority over IDDE, additional requirements were added under the 2017 Permit.
NEMO is developing a sample ordinance with the new 2017 requirements highlighted and will post it here when available.