Comment by owenversteeg

The US isn't a monolith and neither is Europe. Overall, yes, the US uses more chlorine than Europe, but Spain and France both have _minimum_ water chlorination levels (about 0.2-0.3 mg/L depending on the regional situation) and France has no cap on max chlorine, which is very different from the US, where you can drink completely unchlorinated water in countless places around the country and there is a nationwide cap of 4 mg/L. For example NYC (average 0.5 mg/L and many places with zero.)