Irish Water is advising that an exceedance of pesticides have been detected in the drinking water supply in Louisburg.
The MCPA - commonly used to control rushes and docks - was noted following routine sampling of drinking water supplies.
Farmers and landowners using pesticides are being urged to be responsible when spraying their lands.
However, the levels of pesticides in the water DO NOT pose a threat to public health, and the water is safe to drink.
That's according to Dr Pat O'Sullivan, Irish Water's Regional Drinking Water Compliance Specialist, who's been speaking with Midwest News this evening.
He says the HSE has advised that the levels of pesticide in the water do not represent a threat to public health, but says however it is undesireable.