Get to know MS4
What is MS4?
MS4 stands for Municipal Separate Storm Sewer System. These drains are not combined sewer systems and are not connected to the wastewater treatment plant. The Indiana Department of Environmental Management Agency (IDEM) defines MS4s as conveyances owned by a state, city, town, or other public entity that discharge to waters of the United States and are designed or used for collecting or conveying storm water. Regulated conveyance systems include roads with drains, municipal streets, catch basins, curbs, gutters, storm drains, piping, channels, ditches, tunnels, and conduits.
MS4 conveyances with in urbanized areas have one of the greatest potentials for polluted stormwater runoff. The Federal Register Final Rule explains the reason as: “urbanization alters the natural infiltration capacity of the land and generates…pollutants…causing an increase in stormwater runoff volumes and pollutant loadings.” Because of the increased population and proportionally higher pollutant sources, urbanization results “in greater concentration of pollutants that can be mobilized by, or disposed into, stormwater discharges.”
Did You Know…
The behavior of individuals contributes MORE to water pollution than business, industry, and large public enterprise.
Who is Regulated
Did You Know…
A typical city block generates more than 5 times more runoff than a wooded area of the same size.
Helping the Wabash River
What Can You Do to Help?
Public input is an important component of our program. We rely on our concerned citizens and visitors in our City to take the time to help our community prevent and eliminate stormwater pollution problems. We will investigate all incidences of stormwater pollution that are brought to our attention.
IMPROVE STORMWATER QUALITY BY PLANTING TREES!