Algal blooms often occur as a result of excess nutrients,
such as phosphorus and nitrogen, in the water. Preventing algal
blooms poses a significant challenge because once these nutrients are in
the watershed they make take years to be flushed out. Nutrient
management strategies such as reducing the use of phosphate-containing
fertilizers and restoring natural shorelines can help to control nutrient
loading in Wisconsin's lakes, rivers and streams. The Wisconsin Department
of Natural Resources has a number of suggestions for lakefront
property owners (exit DHS) interested in reducing their contribution to nutrient
You can help keep Wisconsin's lakes clean!
Minimize the use of lawn fertilizers.
Do NOT use phosphate-containing fertilizers.
Perform routine maintenance on your septic system.
Plant natural vegetation around ponds and lakes to help filter runoff.