Properties Observed values in Raw sewage
pH 5.0-8.0
Total solids 0.83-12.0
Volatile solids (% of TS) 30.0-88.0
Moisture Not more than 95%
Proteins (% of TS) 15.0-41.0
Phosphorus (% of TS) 0.8-11.0
Potassium (% of TS) 0.4-3.0
Sillica (% of TS) 10.0-20.0
Organic acids (mg L1 HAc) 200.0–2000.0
Total coliforms (CFU/g dry wt) 104-108
Fecal coliforms (CFU/g dry wt) 107-109
Fecal Streptococci (CFU/g dry wt) 103 -105
Salmonella sp. (CFU/g dry wt) 102- 103
Enteric virus (PFU/g dry wt) 102-104