Legalizing recreational marijuana was always bound to cause unintended consequences, including more traffic accidents, addiction, and worse mental health issues. But Jackson County, Oregon, has added another downside to the list: severe water shortages.

It turns out that when Oregon voters legalized recreational marijuana in 2014, southern Oregon saw a surge of illegal marijuana farms posing as legal hemp farms. The Oregon Liquor and Cannabis Commission recently reported that nearly 50% of registered hemp farms inspected by the state grow marijuana with THC content above the legal limits.