Water is reused.

Wafers have purity requirements so you'd be stupid to not recycle and re-purify the water used.

These are from Intel's site so of course it is going to be pro Intel but they reuse the water.

https://www.intel.com/content/www/us/en/newsroom/article/int...

https://www.intel.com/content/www/us/en/environment/water-re...