All are TRUE regarding Bacteriological surveillance of drinking water quality except

Discussing options one by one: OPTION 1 - True - Fecal streptococci are the indicator of recent contamination of water. OPTION 2 - True - Clostridium perfringens indicate remote contamination of water. OPTION 3 - True - Screening test for coliform in drinking water is Presumptive coliform test. OPTION 4 - False - E Coli (Coliform count) is routinely used for bacteriological surveillance of drinking water.