Atrazine and the EU
Today, atrazine is used in more than 60 countries around the world - in Africa, North and South America, Asia and the Middle East. No country has ever discontinued the use of atrazine based on health effects.
Even though countries in the European Union do not use atrazine, the product received a favorable safety review there:

"It is expected that the use of atrazine, consistent with good plant protection practice, will not have any harmful effects on human or animal health or any unacceptable effects on the environment."

Instead, EU countries use a triazine herbicide that's almost identical to atrazine and has nearly the same safety profile, called terbuthylazine.

The European Union's decision not to use atrazine was not science based, but directed by a general groundwater limit for all pesticides of 0.1 part per billion (ppb), regardless of toxicity.

In fact, the EU had recommended a health-based drinking water standard for atrazine that was 150 times higher than the 0.1 ppb arbitrary drinking water limit and five times higher than the US federal limit of 3 ppb atrazine.

Today, terbuthylazine remains an important herbicide in Europe, especially in corn, and received a favorable science review during the EU's reregistration process.