What is the MEP standard for storm water?
Each municipality’s storm water management program must be designed to reduce pollutants discharged from storm water to the Maximum Extent Practicable (MEP). The federal regulations do not define MEP, but in general, to achieve the MEP standard, municipalities must employ whatever Best Management Practices (BMPs) are likely to be effective and are not cost-prohibitive. Through development of its management program, each municipality proposes a BMP-based program to achieve MEP. It is the responsibility of the municipality to ensure that the BMPs are implemented, and it is the responsibility of the Regional Board to determine when MEP has been met.
