Septic Tank Do's & Don'ts


  • Have your septic tank system professionally installed in accordance with the manufacturer's recommendations and following Environment Agency guidelines and regulations.
  • Know where your septic tank and drainage field are located.
  • Have your system inspected and serviced regularly, (we can do that for you - call 0800 023 5301).
  • De-sludge the tank in accordance with the manufacturer's recommendations.
  • Act immediately if you find a blockage or at any sign of a problem.
  • If necessary, seek professional help (call us on 0800 023 5301).
  • Ensure you retain all paperwork relating to all maintenance work.
  • Ensure all manhole covers are accessible.
  • Ensure that any air vents are not clear.
  • Keep the drainage field protected.
  • Divert sources of water, such as rainwater, away from septic tank systems.
  • Use toilet fresheners, mild detergents, fabric conditioners and washing powders and liquids in moderation to avoid upsetting the natural balance of the septic tank.  All active ingredients in soap and detergents should be biodegradable and should be safe for septic tanks in normal use.
  • Use bleaches and disinfectants sparingly as they can kill the friendly bacteria which make the septic tank work.



  • Do not pour fats, oils or heavy grease down the drain.
  • Do not pour paints, solvents and motor oils down the drain.
  • Never dispose of garden chemicals and pesticides into the septic tank.
  • Do not empty chemical toilets into drains or septic tanks.
  • Do not use the toilet or kitchen sink as a rubbish bin. Nappies, sanitary items, plastic or similar items should not be disposed of into the system - 'bag it and bin it' instead.
  • Do not dig or drive over the drainage field, (soakaway), or cover it with a hard surface.
  • Do not block air vents.
  • Do not allow effluent to collect on the surface of the ground.
  • Never enter a septic tank it is a dangerous and potentially deep chamber.

Please be aware that prolonged bad weather or heavy rain can cause the ground around the tank and soak away to become saturated. This can cause the tank to fill up faster than usual as the liquid cannot drain through the soak away.

Need Help? Contact Us

For further information or to talk to us about your septic tank or cesspit requirements with no obligation, please call 0800 023 5301 and one of our team will be happy to advise. Or send us a message:

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