Behavior of with varied filtration rates of slow sand filter to remove total coliforms.

The previous research showed that slow sand filtration (SSF) can remove the total coli by approximately 99% because of the layer in the filter. The presented study aimed to complete the previous research on SSF, especially on the layer mechanism, to remove total coli. Total coli is a parameter of water quality standard in Indonesia, and the behavior of affects the total coli removal.