Results of the Interlaboratory Validation of EPA Method 1600 (mEI) for Enterococci in Wastewater Effluent


This report presents the results of the U.S. Environmental Protection Agency's (EPA's) interlaboratory validation study (the "Study") of a membrane filtration procedure for the analysis of enterococcus in wastewater: EPA Method 1600 which uses membrane-enterococcus indoxyl(beta)-D-glucoside agar medium (mEI). The September 2002 version of the Method (EPA-821-R-02-022) was followed during the Study. The purposes of the Study were to characterize method performance (sensititivity, specificity, precision, and recovery) across multiple laboratories and disinfected wastewater matrices and to develop quantitative quality control (QC) acceptance criteria.


53 pages; available for download at the link below.


water quality analysis, enterococcus, water quality, environmental protection