septic system at secondary school

The community group worked with the science teacher at the school & with the help of an organization in Canada they put in a septic system or sorts into the school, so that all of the waste was processed, minimizing the pollution into the river. The waste drained into a concrete chamber & then sifted through a total of 4 chambers and then a final area, where the water was clean enough to wash your hands in, but not drink.