Cyanazine

Agricultural use on row crops; residues and breakdown products can move from fields into streams and groundwater. Most U.S. uses were canceled by the early 2000s, but it can still be found where it was heavily applied or where use continues elsewhere [2][3].

Drinking water from private wells or systems in farming regions; handling/applying pesticides; spray drift or contact with treated soil; residues on produce are generally low but possible [1][2][3].

Triazines can affect the endocrine (hormone) system; animal studies show developmental and reproductive effects. EPA has classified cyanazine as a possible human carcinogen under earlier guidelines [1][2].

Farmworkers and pesticide applicators; people using private wells near cropland; infants, children, and pregnant people; communities with older or minimally treated water sources [1][3].

Use certified activated‑carbon or reverse‑osmosis water filters; check your water utility’s report or test private wells for triazines; follow label directions and PPE if handling pesticides; avoid recently treated fields; wash and peel produce when appropriate [2][3].