Which method can be used to test for pathogens in wastewater?

The membrane filtration technique is a highly effective method for testing pathogens in wastewater. This method involves passing a known volume of wastewater through a membrane filter that retains bacteria and other microorganisms while allowing the clear liquid to pass through. After filtration, the retained material on the filter is cultured on specific media that support the growth of pathogens. This allows for both the identification and quantification of the microorganisms present.

Membrane filtration is advantageous because it can provide results that are specific to certain types of pathogens and can detect low concentrations of organisms in a sample, making it suitable for monitoring water quality and ensuring compliance with health standards. The technique is also relatively straightforward and can be performed in various laboratory settings, contributing to its popularity in the field of wastewater testing.