in norcal it's illegal to capture the rain that falls on your property due to water rights regulations that go back 150 years
WHAT? Surely you jest. Please cite your source.
Personally, the idea of drinking toilet water doesn't bother me so much because of the e.coli or whatever but rather because of the residues of birth control pills, antidepressants, painkillers, etc. that are already found in our waterways. One can only imagine that recycling wastewater will result in higher concentrations of these substances that cannot be filtered out. I'm imagining some kind of mad-cow-type disease except that instead of working on individual cells in your brain, it works on the individuals in your society, causing weird, unpredictable changes in social behavior.
Yeah, move audiences are really chomping at the bit for a probing discussion of the Halting Problem and the Turing-Church correspondence.
Machines that have broken down will work perfectly when the repairman arrives.