As Change.org has previously reported, atrazine is as ubiquitous as it is dangerous.

The most widely used weed killer in the country, it spreads swiftly
to municipal water—where it has been found to lower sperm counts for
men and increase the risk of breast cancer and fertility problems in
women. When tested on frogs, it was even powerful enough to turn males into functional females.

Now, citizens are fighting back. Sixteen cities in Kansas, Illinois,
Indiana, Ohio, Missouri, and Iowa have filed a lawsuit demanding that
Syngenta—which manufactures atrazine and has made billions off it—pay
for its removal from public water systems. If successful, the payout
could be huge: It’s estimated the cities involved have spent more than
$350 million trying to filter the herbicide from their water.

Not surprisingly, Syngenta has denied any wrongdoing.
A spokesperson told the Huffington Post Investigative Fund that
atrazine was given a green light by the EPA in 2006, so there’s “no
need” to filter it.