A suggested treatment for algae afflicted animals is large quantities of medical-grade charcoal and mineral oil. The following guidelines for humans appear to be reasonable for livestock. Pesticides can enter a ground water or surface water supply from run-off, drift, and accidental spills. Provide adequate drainage around the water supply. Wells should be located on elevated ground to prevent surface run-off into the well.
Fish are much more sensitive to pesticides than other livestock.
These are analyzed only when there is a good reason to suspect their presence at excessive levels.