he Septic Tank Outlet Filter should only require cleaning whenever the septic tank is pumped.  When the

The interval for servicing septic tanks is set by state and local code.  Throughout the United States there is a wide difference of opinion on what this interval should be, but most regulatory agencies suggest two to five years.  The Zabel™ filter, which does not increase the frequency of servicing for the tank, should be cleaned when the septic tank is normally inspected and pumped.   However, our filter is virtually self-cleaning.  The continued action of the anaerobic organisms on the Zabel filter causes lodged particles to disintegrate and fall to the bottom of the tank.