Sample Test Results Well Water Presence/Absence (P/A) Kit

Yellow/Yellow Brown in daylight
E. coli: negative
Total coliforms:
negative

Blue/Blue Green in daylight
E. coli: positive
Total coliforms: positive

Yellow/Yellow Brown no fluorescence UV light
E. coli: negative
Total coliforms: negative

Yellow/Yellow Brown fluoresces blue UV light
E. coli: negative
Total coliforms: positive

Blue/Blue Green fluoresces blue UV light
E. coli: positive
Total coliforms: positive

How to Interpret Color Change