How To Build A Greywater Sump Pump Filter Part 2 This is part 2 in this series. In this video we show you how to: Drill the holes in the filter shelf. Drill the hole for the inlet pipe. Drill the holes for the power cord and outlet pipe. Cut the filter material. You Might Also Like Easy Permits For Your Greywater System May 2, 2019 Shower To Lawn DIY Greywater System | The Before Overview April 21, 2020 DIY – Creating a Simple Greywater System March 31, 2019