The City of Marysville is required to develop, implement, and enforce a Storm Water Management Plan, in accordance with the Ohio EPA National Pollutant Discharge and Elimination System (NPDES) Phase 2 program. 

The City of Marysville has established this set of water quality and quantity policies applicable to all surface waters to provide reasonable guidance for the regulation of storm water runoff.  The purpose of these policies is to protect local water resources from degradation.

These policies will regulate storm water runoff discharges from land development projects and other construction activities.  They are intended to control and minimize increases in storm water runoff rates and volumes, soil erosion, stream channel erosion, and non-point source pollution.  Managing storm water runoff will enhance the health and natural beauty of our waterways.

Land development projects and associated increases in impervious cover alter the hydrologic response of local watersheds.  Impervious cover is defined as a surface that repels water and prevents infiltration of surface water into the soil.  This causes an increase in storm water runoff rates and volumes, flooding, stream channel erosion, and sediment transport and deposition.   This storm water runoff contributes to increased quantities of waterborne pollutants.  Storm water runoff, soil erosion and non-point source pollution can be controlled and minimized through the regulation of storm water runoff from development sites.

The Storm Water Utility, in concert with the City Engineer, is responsible for monitoring the design, operation, maintenance, and inspection of all storm water systems in the City.  The Utility is administered by the Public Service Director.  The City Engineer is responsible for approving all storm water design.