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Polluted stormwater runoff can have many adverse effects on plants, fish, animals and people. Sediment can cloud the water and make it difficult for aquatic plants and habitat to survive. Excess nutrients can cause algae blooms. When algae die they sink to the bottom and decompose in a process that removes oxygen from the water. Fish and other aquatic organisms cannot exist in water with low dissolved oxygen levels.
Household hazardous wastes like insecticides, pesticides, paint, solvents, used motor oil and automotive fluids can poison aquatic life. Surface water pollution in these forms can pose a health hazard to animals and people.
Polluted stormwater often affects drinking water sources such as ground water or other surface water features from which the potable supply is drawn. This, in turn, can affect human health and increase drinking water treatment costs.
For these reasons, property owners are encouraged to leave the buffers around storm ponds in their natural state.
The City of Rosemount has developed its very own Stormwater Pollution Prevention Program (SWPPP) designed to meet the specific needs and issues within the community.
Nonpoint source pollutants include nutrients such as phosphorous and nitrogen, leaking septic tanks, sediment, pesticides, salt, construction site erosion, forestry operations, animal waste, trace metals and toxic chemicals. Individually, these pollutants may not be a major concern, but taken as a whole, they can result in widespread water quality problems that will need to be addressed.
In response to this new legislation, the City of Rosemount has developed a Stormwater Pollution Prevention Plan (SWPPP) to address the issues associated with stormwater pollution. The plan is designed to prevent the spread of pollutants by applying Best Management Practices (BMPs) and Public Education which aim to reduce the concentration of common pollutants and eliminate the pollutant sources. The SWPPP is a collaboration of ordinance, policy and public education. The Surface Water Management Ordinance and Erosion Control Policy stipulate strict requirements relating to fertilizer application, wetland protection and erosion control application(s). Public education focuses on the lifestyle habits and practices of the community and identifies which habits and practices are influencing stormwater pollution. Efforts are focused on these particular issues.