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Agricultural fertiliser applied to land can leach into groundwater or runoff into watercourses.

It is important to protect the water quality of drinking water sources from nitrate pollution to prevent the need for additional expensive treatment.

Thames Water is working in partnership with farmers and the Environment Agency to reduce nitrate impact on groundwater and rivers by:

  • Identifying Safeguard Zones
  • Improving our understanding of land use and potential sources of nitrate within Safeguard Zones.
  • Working with stakeholders to understand methods available to farmers to reduce nitrate pollution.
  • Raising awareness and encouraging best practice