When purchasing detergents, check the label to see if the product is either “biodegradable” or safe to use in a septic tank and is not “biocidal”, i.e. made to kill bacteria, or high in chlorine or ammonia. We need the natural bacteria to break down the waste.

DO NOT: use strong caustic, acids or chemical detergents, hospital strength cleaners, bleach or Napisan, as these contain disinfectants harmful to the natural biological process. If you need to, use these products in a bucket and dispose of outside. Do not put down the drain.


To clean the bath using a chemical product, use sparingly and put the plug in. Ensure the bulk of the cleaning material is wiped out with paper towels, which are later disposed of in the bin.


Again, verify that what you are purchasing is “biodegradable”. Most hand soaps, shampoos, conditioners are not harmful to bacterial in the quantities that would normally be introduced to an aerated wastewater treatment system.


Self-flushing products which fit in the toilet should not be used with the exception of Blue-Loo and Bloo. Pine-O-Clean or Toilet Duck must only be used in small quantities.


Use Biodegradable products. All nappy products are anti-bacterial solutions and should not be used. If nappies must be soaked, make sure the wash water does not enter the system.

TRY TO: spread your wash loads over the week.

DO NOT: use BLEACH unless the water can be disposed of without entering the system.


Use biodegradable products; Sunlight Liquid, Sunlight Bar or Sun Advance. For dishwashers, Finish or Sun Advance is recommended.


  • Use biodegradable products.
  • Use detergents that are phosphate free such as Down to Earth, as these kinds of products are less harmful to the environment.
  • Use the manufacturers recommended dosage levels.
  • Do not allow bleach or chemicals to enter the drainage system.