Methoxychlor is a banned pesticide that can enter water through agricultural runoff. It disrupts hormones and harms reproductive health in humans and animals.

Methoxychlor, a synthetic pesticide created to replace DDT, was widely used on crops, livestock, and for mosquito control until its ban in 2003. It enters water sources primarily through agricultural runoff and soil erosion. This persistent chemical is measured in parts per billion (ppb) and can accumulate in the food chain. As an endocrine disruptor, methoxychlor poses significant risks to reproductive health in both humans and wildlife, leading to its prohibition in many countries.