Can Trisodium Phosphate teaspoon runoff harm plants?

Yes, these phosphates contribute to various problems, such as algae blooms over large bodies of water that are subjected to prolonged runoff, you can easily purchase phosphate free alternatives to the chemicals that cause these issues. while absolutly true the former answer does not address the question. phosphate run off is bad for the envirument and can cause alae bloom but it does not harm plants... not even in large quantities.zaf.