> MN has basically decided they're not gonna bother considering what that means and just make everyone do mounds at great expense.

This isn't even a factual statement.

> The majority of SSTS permitted in 2024 were Type I systems; approximately 43% were mound systems.

https://www.pca.state.mn.us/sites/default/files/wq-wwists1-6...

> Forcing everyone to manage runoff...when 99% of it is clean

Speaking of the drainage topic, its usually less about if its clean or not, it probably is generally "clean". Its about managing the proper flow and holding to make up for the new impermeable structures in place. Which I agree, should also be related to overarching plans of the city/county/state about where that water should go. It shouldn't just be a patchwork of little independent designs, but that's a part of that whole approval process. But just building more impermeable structures and expecting everyone else to deal with the issues they cause is quite a selfish take.