If you know any Marines or Sailors and their families that served or lived at Camp Lejune prior to 1987 they should check this out. They had bad drinking water for 30 years.
Camp Lejeune Historic Drinking Water
https://clnr.hqi.usmc.mil/clwater/
https://clnr.hqi.usmc.mil/clwater/Site/background_information.html
They used concrete water pipes that contained asbestos as I understand the story.