Flooded Septic Tanks and Soakaways – What You Can Do

With sodden ground all around you, there is little you can do right now to alleviate problems. In the short-term using less water will helpto ensure that over-flows are minimised.  

If the water table (level of water in soil) becomes higher than the outlet from a septic tank, then water will drain back into the tank – it’s simply that water will always find its own level. This is likely to fill the entire tank and mix the effluent in the chambers.  The result is that, when water levels subside, effluent solids are discharged from the tank which can then block soil porosity in the soakaway.  Jetting-out the outlet drain will most likely force more solids into soil air spaces.  

Do ensure that drain covers are sealed to eliminate unnecessary water draining into your tank.

Global Warming Myth

Backed-Up Flooded Tanks

The serious concern once the mess has been cleared around the tank is the very high risk that raw effluent has been flushed in to the drainfield that needs action. 

You have 2 potential choices –

  • Once the soil begins to dry out, have your tank emptied and outflow drains rodded. Acting too early can result in a back-wash of silt and sand that could add to your problems. Rodding is preferential to jet-washing, which can just drive more effluent in to the drainfield.
  • Alternatively, or in addition, after any flooding has subsided, use an immediate treatment of Triple Action Bog Busters This special treatment both digests waste in the septic tank and effluent in the drainfield, which can result in long-term soakaway damage. 

Minor Septic Tank Overflows

If the problem does not look too serious – simply that flood or rainwater has entered the tank – our advice is, that once the flood has subsided, to double the dosage of Muck Munchers, but only for two to three months. Do check the secondary tank chamber from time to time to ensure waste is being digested effectively.  Excessive dosing will provide no additional benefits unless used with an oxygenator such as Oxy-Tonic.

Boggy Soil Around Septic Tank

Following the end of the wet winter weather, when the soil should be drying out, if  the soil around you tank appear boggy and plant growth perhaps more lush than elsewhere, it is a clear sign of drainage difficulties caused by excess effluent outflowing from the septic tank in to the soakaway blocking the spaces between soil particles, stopping water from draining away.  This can be treated using Oxy-Tonic to oxygenate the soil an diluted Muck Munchers in a watering can in addition to a Bog Busters treatment.  

Visit the Muck Munchers and Bog Busters pages for treatment advice, which you will find under the product descriptions.

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