Pesticide users are being urged to remember that "it only takes one drop" of the chemical to impact a drinking water source.

Yhe National Pesticides and Drinking Water Action Group (NPDWAG) is calling on users to maintain vigilance in the wetter autumn months.

The group is highlighting actions that can help protect drinking water supplies for the communities that depend on them.In recent years, Ireland has made significant progress in reducing pesticide detections in drinking water supplies.

Since the establishment of the NPDWAG in 2017, pesticide exceedances have been cut by more than 50%.

However, during the autumn months, wetter conditions can increase the risk of pesticides entering rivers, streams and other drinking water sources.Department of Agriculture, Food and the Marine (DAFM) senior inspector and chair of NPDWAG, Dr. Aidan Moody said: "We have seen excellent work by farmers and land managers in recent years to reduce pesticide use and to follow correct application methods.

“This approach not only protects our drinking water but also supports biodiversity and healthy ecosystems."

Best practice

Dr. Patrick O'Sullivan of Uisce Éireann said: "Experience shows that pesticide exceedances can still occur outside the main spraying season, particularly during the autumn months.

“By following best practice and taking extra care near watercourses, pesticide users can help protect drinking water and build on the significant progress achieved in recent years."Pesticide users are reminded that proper storage and disposal of pesticides and their containers remain important throughout the year.

Users should also note that a closed spray period is specified on the label of some products, during which time it should not be used.

Guidelines

All pesticide users are reminded of the following guidelines:

Only use pesticides when necessary and after considering all alternative control methods;
Always read and follow the product label;
MCPA products are not allowed to be used from the end of September (or the end of October depending on the particular product) through to the beginning of March;
Do not use pesticides if rain is forecast in the next 48 hours;
Keep well clear of watercourses, drains, wells, and springs, and observe the correct no-spray buffer zones;
Avoid spills: Never fill or wash sprayers beside drains or on concrete where run-off can occur, and triple-rinse containers into the sprayer;
Dispose of unused product and containers safely;
Never fill a sprayer directly from a watercourse.

More information can be obtained from local farm advisers or through DAFM's water protection resources.