Please don't shoot the messenger -- I get in deep trouble posting links. But I think (?) this is appropriate for Permies.
Windham County's pee-donations are collected by a lorry and driven to a large tank where the urine is pasteurised by heating it to 80C (176F) for 90 seconds. It is then stored in a pasteurised tank, ready to be sprayed on local farmland when the time is right to fertilise crops.