CRYSTAL CLEAR RESULTS IN 48 HOURS
Just pour some of your water into the jar, shake for 20 seconds, then leave at room temperature for 48 hours. If there’s bacteria in your water, it will eat up the nutrients in the jar, turning the water a bright yellow color.
Although it’s not possible to test for E. coli separately, this test will still show you if it’s present. A positive test result means your water contains any coliform bacteria, which may include E. coli.