The PL-250 septic tank effluent outlet filter is perfect for improving the performance of your septic tank or wastewater treatment system. This product will reduce the solids exiting the septic tank into your drainage or percolation area and ensure its long-term performance and functioning. If solids exit your septic tank or treatment plant then your percolation area or drainage field will clog and partially treated sewage will most likely pool on your garden, possibly contaminate any onsite water source and directly expose anyone in contact with this area to e.coli and fecal coliform infections and associated sickness. Ideal for flows of up to 11,400 litres per day, the PL-250 is the perfect solution for higher flows.