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Phosphorus is naturally abundant in the soils of southeast Michigan. Water runoff from fertilized residential lawns is the primary source of phosphorus contaminants entering the Huron River. During normal lawn watering or natural rain storms, unnecessary phosphorus washes into the storm drains. These empty into local streams and the Huron River, without filters or treatment. If you own waterfront property, it can wash directly into the adjacent waterbody directly or is carried by eroding soil.

Phosphorus contributes to excessive aquatic plant growth, nuisance algal blooms and decreased oxygen levels in our freshwater lakes, rivers and streams.


Ypsilanti Township Phosphorus Ordinance Pertaining to Lawn Fertilizers

Michigan Law,  Public Act 299 of 2010


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Charter Township of Ypsilanti  •  7200 S. Huron River Dr. Ypsilanti, Mi 48197  •  (734) 484 - 4700

Mon. - Fri., 8:30am - 4:30pm  •  Closed 12:00pm - 1:00pm daily