Uisce Éireann and the National Pesticides and Drinking Water Action Group (NPDWAG) are urging pesticide users in Louth to take extra care as the spraying season comes to a close.
Since 2017, detections of pesticide exceedances in public drinking water supplies have dropped by more than 50%, thanks to the efforts of farmers, landowners, and amenity managers. However, recent monitoring shows that the risk remains.
With the current good weather, some may be considering spraying grassland or amenity areas for weeds such as docks, thistles, or nettles. NPDWAG reminds users that pesticides should only be applied when absolutely necessary and always in line with best-practice guidelines. Non-chemical control methods should be considered first.
Dr Pat O’Sullivan of Uisce Éireann warned that even one drop of pesticide can travel up to 30km in a watercourse: “We are urging all pesticide users to be mindful of their use as the spraying season comes to a close, so that we can avoid late-season exceedances again this year.”
Dr Aidan Moody, Chair of NPDWAG, added: “We urge everyone to always consider whether a pesticide is needed at all, and where it is, to make sure best practices are followed. This protects both our drinking water and biodiversity.”
Users are also reminded that products containing MCPA cannot be used from late September or October (depending on the label) until March, as wetter conditions greatly increase the risk of pesticides entering drinking water sources.
Key messages for pesticide users:
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Only spray when necessary and after considering alternatives.
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Always read and follow product labels.
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Do not spray if rain is forecast within 48 hours.
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Keep well clear of watercourses, drains, wells, and springs.
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Avoid spills, wash sprayers safely, and dispose of unused product responsibly.
