Chip making has a long, torrid history of using toxic, long lived chemicals and not cleaning up very well. They also use a lot of water, and that's often a concern with supply level continuity at risk.

If you don't take great care, and let the stuff you work with get into the groundwater, or assume free running water clears and dilutes your problem, then you're a strong candidate for being opposed by people who care about water quality, in supply and in the food chain and downstream.