From LoHud.com / The Journal News:
The Westchester County Board of Legislators last night unanimously approved a ban on phosphorus and added restrictions on lawn fertilizers as a way of improving the region’s water supply. The law basically regulates the use and sale of fertilizers…
…The aim is to reduce runoff of nitrogen and phosphorus into water bodies, such as the Hudson River and Long Island Sound, where they feed algae, which then blocks sunlight and consumes oxygen from the water that aquatic life needs to survive.
If you live in the lake watershed you should already be using phosphorus free fertilizer. Using phosphorus-based fertilizer contributes to weed and algae growth in our lake and also downstream. The soil in this region already has plenty of phosphorus.
There are other more environmentally sensitive fertilizers available at many local nurseries including Gossett Brothers on Route 35.