slow sand filter field tests

It is now October 2, 2014. Filter 1, and filter 4 have output water with no (0) coliform and no (0) e coli bacteria present. The cistern water that flows through filter 2, and filter 3, has 4 cfu’s of coliform per 100ml and 20 cfu’s of e coli per 100 ml. ┬áSee the images below:

These images are of filter 1, filter 4, and the cistern output water tests.

These images are of filter 1, filter 4, and the cistern output water tests.

Tests on filter 2, filter 3 and filter 5 will be done in the next couple of weeks.

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One Response to slow sand filter field tests

  1. Brittney says:

    This is a great way to test sand water filters! Thanks for sharing.

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