Usable water from raw sewage.
D001419:Bacteria / Q000528:radiation effects; D001673:Biodegradation, Environmental; D002587:Cesium Isotopes; D003037:Cobalt Radioisotopes; D056890:Eukaryota; D006863:Hydrogen-Ion Concentration; D009678:Nuclear Energy; D010101:Oxygen Consumption; D010278:Parathion; D011830:Radiation Effects; D012722:Sewage; D014780:Viruses / Q000528:radiation effects; D014867:Water / Q000032:analysis; D014881:Water Supply
D002587:Cesium Isotopes; D003037:Cobalt Radioisotopes; D012722:Sewage; D014867:Water; D010278:Parathion