Once the partly dealt with wastewater enters the drainfield, it begins to infiltrate the soil and percolate downwards. So long as the soil is suitable, the microbes while in the soil digest the pollutants, removing the micro organism, viruses and extra nutrients by the point the water reaches the groundwater https://lukaslxunj.livebloggs.com/35008417/the-2-minute-rule-for-baf-for-upgrading-sewage-and-wastewater-treatment-plant