- Install an *GPM UV Sterilization light w/alarm - Install a whole house 4 x 20 sediment filter housing with a carbon insert cartridge - Replace existing well pumping system with a Grundfos constant pressure system. The system consists of: CU301 variable frequency drive Stainless steel manifold package 4.4 Gallon Well Extrol well tank SQE series Grundfos submersible pump, 1HP 10 GPM and TBD. We are assuming 305' of new well wire and that the well pipe is rigid. Rigid pipe requires use of our boom truck. The old well tank will be removed and disposed of properly.