>>1198966Not to mention that many infections (eg giardiasis, cryptosporidium) are caused by protozoan parasites that naturally live in soil. Even groundwater from "unpolluted" sources is likely to assault your colon without a lifetime of building immunity - it's less that we fucked up the water and more that our diet of purified water has weakened our immunity.
Now hepatitis A, that's totally our fault, and a good reason not to drink any fresh water even remotely near waste areas (eg California).
