<prompt> Strength of Sewage can be assessed by All EXCEPTBiological oxygen demand BODChemical oxygen demand CODSuspended solidsColiform count  <response>: Sewage - Contains 99.9 water Strength is assessed by 1. BOD Biological O2 Demand - Best method O2 absorbed by sewage at 200 C 2. COD Chemical O2 demand 3. Suspended solids 