Why is Ann Arbor banning the use of phosphorus containing fertilizers?
• Runoff from single and multi-family dwellings in Ann Arbor is a significant source phosphorus in the Huron River. • Research shows that in most areas of Ann Arbor, there are sufficient levels of phosphorus already in the soil, and phosphorus additives are not needed. In fact, 86% of 913 soil samples taken in Washtenaw county indicate that no additional phosphorus is needed for successful turf growth. • 100% compliance with the phosphorus-free mandate would reduce phosphorus loading in the Huron River by 560 lbs. per year, which is decrease of 22%. • The ban on phosphorus containing fertilizers will only apply to fertilizers applied to turf. One may still use fertilizers containing phosphorus in a flower or vegetable garden. What else can I do to reduce phosphorus loading in the Huron River? • Between 9 and 34% of phosphorus loads going to municipal wastewater treatment plants originates from automatic dishwashing detergents! Use phosphate-free (Seventh Generation Powder) or low-phosp
