Concentrated rainwater treatment

For the treatment of rainwater.

  • Clarifies the water of an outside cistern or butt.
  • Eliminates odours.
  • Reduced limestone and softens the water.
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When you use rainwater for your toilets, watering or cleaning. The water may sometimes be cloudy or milky or give off unpleasant odours. Use the concentrated EPUR Biosolution® rainwater treatment, it clarifies and removes odors from your cistern and outdoor rainwater tank.

Its biological formula based on micro-organisms degrades the organic matter that can accumulate in the tank. After treatment you can reuse the water for spraying, use of toilets, washing machine, swimming pool, etc. Thanks to the chlorine-free formula, the water can be used for watering your plants. Suitable for connection to septic tanks.


1 sachet for 2 m³ of water

  • Pour the contents of the sachet into the tank or rainwater cistern (40 g for 2000 L).
  • Leave on for 24 hours.

Repeat this operation every 2 months. In case of heavy rain, increase the frequency. This product does not make water drinkable.

Technical file

Additional information


14 sachets x 40 g




The product or its components are not organically grown. The term "biological" refers to enzymes from microbiological organisms