What causes Your Septic tank to block up? Maybe it’s not a problem with the tank itself, but a problem with the absorption trench that handles the treated water leaving the tank; a failed absorption trench.
If correctly designed and installed drainage absorption trenches will last for years. However, septic trenches can fail; when the wastewater can not absorb into the ground, it will back up into the septic tank, causing your homes drainage system to block up and overflow. When this happens, your absorption trenches will require immediate repairs, rehabilitation, or the creation of new trenches.
An absorption trench will fail for several reasons, in the majority of cases, this will result in a very smelly and soggy situation happening in your yard, leading to a serious problem very quickly.
Why an absorption trench will fail:
- A trench installed correctly will be installed level, so to ensure the water flows along the whole length of the channel, allowing the treated water to absorb evenly into the surrounding area. When this is not the case wastewater flows to one area of the trench with only a small section of the channel taking the bulk of the wastewater, problems will occur.
- When the trench designed is not big enough and can not adequately absorb the wastewater, such as areas of soil with high levels of clay and rock, soils which are more or less absorbent.
- Trenches can collapse due to traffic from heavy machinery and large, heavy animals; pushing down the ground ontop collapsing into the trench arch or pipework preventing the wastewater flowing along the trench.
- Increasing the number of plumbing fixtures connected to your septic system; an increased volume of wastewater from your home can flood the septic system. When the amount of wastewater flowing into the disposal area is greater than calculated in the original design, it may be too great a volume for the arches to handle.
- Trenches not protected with a layer of geo fabric can become blocked Geo fabric is a cloth that prevents dirt and debris from seeping into the pipe or arch causing silting up and eventually resulting in restricted flow and blockage.
- Another reason septic trenches fail is waste sludge leaving the septic tank and flowing into the absorption trenches. Septic tanks should have a filter installed on the outlet side of the tank, allowing only wastewater to leave the tank and prevent sludge from filling up the absorption trench arch.
When you have unpleasant smells, excessively wet areas of grass or garden effluent surfacing: your Drains, sink, bath, toilet or shower are slow to drain, and your Septic tank needs frequent pumping (more than once a year), you have a failed or blocked absorption trench. In the majority of cases, you will require a complete rehabilitation or new channel altogether. A specialist drain cleaning business like King Plumbing will be able to give you more information and be able to assess the problems with your septic system or absorption trenches and recommend the best repair method.