Currently, the Canadian guidelines recommend that HPC levels should not exceed 500 CFU/ml. Although there are no laws enforcing this recommendation, if this level is exceeded in municipal drinking water, an inspection is often conducted to determine the cause of the increase.
1. Label the 5 Agar Plates: Control, and the names of the four water samples to be tested. (ie. Urban Treated, Rural Treated, Untreated Raw, Local Treated) 2. Label the 5 sterile pipettes: Control (CW), and the appropriate water sample names (ie. Urban Treated, Rural Treated, Untreated Raw, Local Treated)