How to properly wash your septic tank filter
MAINTENANCE & CARE

How to properly wash your septic tank filter

Ideally, only wastewater should flow from the septic tank into the drain field, but solids like hair, grit, and debris can sometimes pass through and cause blockages. A septic tank filter, usually located in the tank baffle, prevents suspended solids from reaching the drain field. Like the rest of the system, it requires regular maintenance. Failing to clean the filter can lead to serious clogs, so it should be inspected twice a year and cleaned at minimum during every tank pumping.

Steps to follow when cleaning the septic tank filter

Before you start cleaning the filter, make sure you have dressed in full-length pants and shirt, safety goggles, gloves, and boots.  You can then go ahead and clean the filter by following these steps;

  1. Start by removing the access lid to the septic tank. this shouldn’t be too complicated if the access lid is above ground. If it is buried, you might have to locate it first. Here is a link to an article that explains exactly how you can locate your septic tank.
  2. Once you have removed the access lid, you can go ahead and remove the filter cartridge. Make sure to hold the filter over the first manhole (because this is where the organic waste is treated) so that any effluent from the filter will run back into the septic tank. If you drain it in the wrong manhole, untreated wastewater might go into the drain field.
  3. While still holding the cartridge over the open port of the septic tank, spray the cartridge with a water hose in order to remove any material that may be sticking on it.
  4. Some of the filters have an alarm that activates when the filter is need of cleaning. If you have such a filter, check to ensure it is working properly. You can do this by lifting the float switch to sound the alarm.
  5. Inspect the modulating orifices and the vent hole to ensure there is no debris stuck in there. If you find any debris, spray it away with the hose
  6. Replace the cartridge by placing it firmly into the saddle holes and then clean any spillages around the area.
  7. Close the septic tank lid
  8. Change your clothes right away and then wash and sanitize your hands.

TIP: record the date of inspection and any other important notes in a maintenance book/file which you can refer to in the future.

Keeping the septic tank clean

When you keep the septic tank clean, you will have fewer problems with the septic tank filter. The first rule in keeping the septic tank clean is watching what you send down the drain. Any products that are not biodegradable should be thrown in the trash and not flushed in the toilet. That includes products that are often mistaken for biodegradable like baby wipes, cotton buds, cigarette butts, etc. This also applies to chemicals and other toxic substances.

It is also important to stick to the recommended septic tank pumping schedule. How often you are required to pump the tank will depend on your jurisdiction. Do not assume that you can skip the pumping just because the septic tank doesn’t show any signs that it is full. It is always better to be safe than to be sorry.

Using biological additives can also help to keep the septic tank clean. When you add these additives into the tank, they introduce billions of bacteria into the system. These bacteria will help in the digestion of organic waste in the septic tank. The septic tank typically has bacteria added every time you flush the toilet but since the average home uses substances that can harm the bacteria, it is beneficial to replenish the bacteria every now and then by adding biological additives. This will help to keep the septic tank and by extension the septic tank filter clean.

Conclusion

As a rule of thumb, you should always clean the septic tank filter when doing your routine pumping. But since this will typically be after a couple of years, you should inspect the filter twice a year – just before winter and right after winter. It is best to use a filter that has an alarm. This alarm is programmed to go off whenever the filter is need of cleaning. If you clean the filter regularly and take good care of it, it should serve you for years without any issues.

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