Fun with sewage

This sounds like a lot of fun:

Sewage. To simulate chemical-toilet and holdingtank sewage, which is generally stronger than typical domestic wastewater, a simulated sewage with a suspended-solids concentration of about 1,000 mg/liter was used in this study. The sewage contained per liter: 3.5 g (wet weight) of fecal material, 10 ml of urine, 0.25 g of toilet tissue, 0.4 ml of liquid hand soap, 100 ml of domestic raw sewage, and 885 ml of dechlorinated tapwater. The components were combined and blended for 1 min, and the mixture was used immediately.

Source: Sobsey MD, Wallis C, Melnick JL. Chemical disinfection of holding-tank sewage. Appl Microbiol 1974; 28: 861-6.  Abstract on PubMed via Amedeo.

Taken from the article's Materials and Methods section.