It could be necessary when machinery produces a lot of fluid waste, you could suck it with hoses and flush it through pipes into a lake (and make it neon green). The polluted lake could spawn mutants after a while, who could be hostile to everybody including the bitters


Another complementing idea is to put the waste fluid into barrels, and then strap them to a ballistic rocket. The rocket could be fired at distant bitter nests to make them agitated (this could also produce mutations in them, giving random traits).
