Artificial sweetener makes ideal tracer.
Lubick
Naomi
N
D012722:Sewage / Q000737:chemistry*; D013549:Sweetening Agents / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods / Q000592:standards; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*
D012722:Sewage; D013549:Sweetening Agents; D014874:Water Pollutants, Chemical; D014867:Water