Pesticides have the potential to contaminate drinking water supplies.  They are applied to farmlands, gardens and lawns and can make their way into ground water or surface water systems that feed drinking water supplies. 

Whether these contaminants pose a health risk depends on how toxic the pesticides are, how much is in the water, and how much exposure occurs on a daily basis.

Leaflets

• Advice for Farmers and Other Professional Users
  This leaflet contains general advice for all professional users.
• Herbicide Use in Grassland
  This leaflet contains much of the advice in the previous leaflet but is targeted at professionals using herbicides on grassland, and also includes a section on MCPA and rush control.
• Advice for Gardeners and Household Users
  This leaflet contains general advice for amateur users.