Buy a recycled one. My cast iron tub is from 1927. This is silly-like the people who buy electric cars. How are those electric car batteries manufactured? But everyone wants to feel holier than thou with virtue signaling about being environmentally better than me. We just had a post about a woman agonizing over trimming trees because she loves trees at the same time she is trying to get “rid of the pests”, the wildlife in her backyard- squirrels, raccoons, foxes.

@remodeling1840 Like I said, these are going to be drop-in tubs - are antique drop-in cast iron tubs a thing? I assumed they weren't.

Can you explain more about why it's silly to try to find a cast-iron tub that is manufactured in a more responsible way? Is there some bathtub material that you think is more eco-friendly than cast iron?

@User You seem like you might have an insider perspective on Kohler - do you get the impression, then, that the company genuinely cares about being more environmentally friendly?

@User Your comment inspired me to take a second look at the Kohler pollution story. When I read more closely, I was encouraged to see that Kohler actually self-disclosed the problem to the EPA and the California Air Resources Board.

Kohler Co. Clean Air Act Settlement Information Sheet