The EPA tried wrt water systems and Republican states along with the industry sued them. So, good luck with your Swiss cheese industrial controls for critical potable water supplies. Fuck around and find out I guess.
https://www.awwa.org/Portals/0/AWWA/Government/101323Insider...
https://www.epa.gov/waterresilience/epa-cybersecurity-water-...
https://cyberscoop.com/epa-calls-off-cyber-regulations-for-w...