Phage Analyses
Analysis for the two types of phage in this study – MS-2 and Somatic coliphage – will be conducted according to EPA Method 1642 and EPA Method 1643. The methods themselves are identical with the exception of a step in Method 1642 that utilizes ultrafiltration to increase the concentration of virus for analysis.
Bacterial Analyses
Analysis for the three types of bacteria in this study will be conducted using the Quanti-Tray system from IDEXX.