TABLE 6.

ATP approach comparability study: somatic coliphages

Waste locationChlorine disinfectionDilution (ml/liters)No. of samples positive by assay:Total no. of samples
EPA 1601STEP-1Fluorescence
M 10-15-08No2.25/4.515151620
L 09-09-08No4.5/4.512101120
SA 12-18-08No0.35/4.5106720
L 06-26-08Yes10/4.51513720
O 123008No1.9/4.51091120
O 010209Yes280/4,22054320
Sum675755120
% positive55.847.545.8