Stormwater Blogs

River Phosphorus Drops Following P-free Fertilizer Ordinance

How hard would it be to learn if river phosphorus concentrations are dropping in response to a new city ordinance restricting the sale and use of lawn fertilizers containing phosphorus? That is the question posed to me about a year ago by the environmental coordinator of the city of Ann Arbor, Michigan. Like several other communities in Michigan, as well as in New Jersey, Wisconsin, Florida, and entire states including Maine and Minnesota, the city council had voted to take a step that More...