66% of Westmeath rivers are of unsatisfactory quality.
Two thirds of rivers in the Westmeath are in unsatisfactory biological quality according to the Environmental Protection Agency.
Laois and Offaly are in line with the national picture with just over half of the rivers up to standard.
The EPA's latest report found that surface waters and groundwaters continue to be under pressure from human activities.
Senior Scientist in Water Programme Shane O'Boyle says there are a number of factors involved:
Planning Permission Approved For New 800 Pupil Secondary School In Midlands
Annual Rose Of Tralee Tour Underway
Longford-Westmeath TD Urges Action On Vacant HSE-Owned Buildings
Taoiseach Backs Offaly Camino Proposal
Laois Pride Launch Writing Competition In Memory Of Joe Drennan
Laois Truck Driver Arrested For Driving Overweight Truck Under Influence
Offaly Business Closed Over Food Safety Breach
Gardai Continuing Laois Meadow Fire Investigation