timerover51
Deity
After running several checks, here is one way to avoid pollution. If you put a city on a One-tile island, it can max out on pollution, but never have you cleaning up any, as pollution only effects land tiles, not coast, sea, or ocean tiles. If the tile has some fish or whales in the vicinity, and you maybe tweak them a bit, along with tweaking some buildings, you can get an enormous amount of production from a city, without worrying about pollution.