Die Werra im hessisch-thüringischen Kalirevier

Potash mining and water protection

For more than 125 years, K+S has been helping to overcome the challenges of the future. Our raw materials and plant nutrients are needed worldwide. We realize that, as with all industrial production, we are interfering with nature when we extract and refine potash and salt.

What has K+S done for water protection?

  • In past decades, K+S has undertaken much to improve the environmental situation on the Werra and the Weser rivers.
  • Between 1997 and 2015, we reduced saline wastewater by almost two thirds.
  • We invested around 400 million euros on this in the most modern technical equipment and processes between 2011 and 2015 alone, as part of the “package of water protection measures”.

What is K+S doing and planning in relation to water protection for the future?

  • K+S wants to resolve the disposal issues at the Werra in the long term and will continue to invest in water protection in the years to come.
  • The KCF facility at the Werra site will lead to another significant reduction of a good 20% in quantities of saline wastewater from 2018 onward.
  • We are working  to implement and check long-term solutions in relation to the “Salt” management plan of FGG Weser (the Weser River Basin Association (Status report of the Salt Reduction Working Group 2018 – in German only)
  • The review program agreed with the Weser River Basin Association will be completed by the end of this year with a focus on new wastewater reduction and disposal techniques, at disused mine sites, for example. However, a start has already been made on long-term projects: The planned covering of tailings piles to reduce saline tailings pile runoff is being developed to the deployment stage by way of multi-phase testing and research is continuing – with the help of external specialists too – into techniques for reducing wastewater.



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