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How often should you clean your system filter?The STEP system filter protects your pump and we recommend it be cleaned annually. Since Division 12 was built over several years there will be differences in systems from household to household. A contractor can be engaged to perform the cleaning, or you can do it yourself. For the basic cleaning steps you can follow to get the job done quickly and correctly Click on: 2025-Cleaning your STEP Pump Filter 11-02.pdf and you will be taken to the System Maintenance page. Note: pumping your tanks is not required to perform this work.