A senior scientist with the Environmental Protection Agency says it's concerning that rivers and lakes in Roscommon and Longford have a higher rate of water quality issues than the national average.
A report from the EPA today shows surface waters and groundwaters across the country continue to be under pressure from human activities.
The report says many rivers have high levels of nitrogen and this is primarily due to agricultural activities.
Nationally the figures show 43% of our waterways have issues with sustaining healthy ecosystems for fish, insects and plants.
Shane O' Boyle says while Leitrim is well above the national average when it comes to water quality generally, it is surprising that rivers in Roscommon and Longford aren't faring as well: