Quantitative Enterococci

Enterococci bacteria are a subgroup of the fecal streptococci that include S. faecilis, S. faecium, S. gallinarium and S. avium.  Studies of marine and fresh water have identified enterococci as the most effective bacterial indicator for recreational beach waters.  The recreational guideline for fresh water is 33 per 100 ml for the geometric mean of at least 5 samples in a 30 day period. A recreational guideline for marine water is 35 per 100 ml for the geometric mean of at least 5 samples in a 30 day period.  The test involves the use of a chromogenic substrate that is specific to enterococci and is similar to the procedures outlined above for E. coli.  SMI also offer a rapid test to detect enterococci in beach water using qPCR.

Method Volume Matrix
EPA 1600 200mL SW, DW
qPCR 200mL SW, DW