BossmanPJ
Ultimate Member
Water systems are part of (critical)
municipal infrastructure. As such they are prime targets for all sorts of wackos.
This. Water syatems are extremely easy to back syphon into if you know what you are doing. Towers are also usually not protected near enough. Also, if you wanted to effect a huge number of people at once, water would be a way to make it happen. Not everyone drinks water directly from the tap, but a lot of people do.