Dimethipin is a herbicide used on cotton crops that can enter water through agricultural runoff. It may cause liver and kidney damage if consumed in high amounts.

Dimethipin, introduced in the 1970s, is a herbicide primarily used on cotton crops. It can enter drinking water sources through agricultural runoff. The EPA measures dimethipin levels in parts per billion (ppb) and has established a maximum contaminant level to protect public health. Water treatment facilities can remove dimethipin using activated carbon filtration. While health effects are possible at high doses, proper regulation and treatment minimize risks to consumers.