Meanwhile, Portlaoise is the cleanest town in the country.
Dumping of large items along the canal in Mullingar is being pinpointed as a reason for it failing to attain a European standard for cleanliness.
The Bring Centre at the Council Buildings was also adjudged to be in a poor state.
The results come from the latest Irish Business Against Litter survey which ranked the town 25th out of 40 looked at by An Taisce.
Portlaoise is the cleanest town in the country.
Athlone and Tullamore have retained their status as cleaner than European norms - ranking 12th and 15th respectively.
IBAL’s Conor Horgan says to won't take much for Mullingar to shoot up the list:
Revenue Seize Over €156k Worth Of Contraband
New Bid Lodged for 46 Home Development In Laois
Diverse Volunteers Driving Town Centre First Success - Regeneration Officer
Westmeath Family Remembers Sister 15 Years On
Midlands MEP Questions Mercosur Court Delay
Woman Hospitalised In Laois Crash
Over €86k Awarded To Westmeath Domestic Violence Services
Sinn Féin MEP Demands Action To Protect Midlands Mother and Baby Home Records
‘House of Horrors’: Brothers Forced To Abuse Sister Receive Sentences
Plea ‘Final Decision’ Wait For Doctor Accused Of Dangerous Driving Causing Daughter’s Death
Laois TD Welcomes Reform To Ireland’s Asylum Accommodation System
Offaly County Council Reports Reverse Gender Pay Gap
'Stylish' And 'Sexy' - TUS Calls for Removal of Tobacco Imagery
29 Midlands Biodiversity Projects Awarded Almost €300k In Funding
Westmeath County Council Hike Commercial Rates By 10%
Three People Arrested Over William Delaney Murder Released
Over 2,400 Midlands Children Taking Part In The Little Library Initiative
Offaly Campaign Raises Awareness of Hidden Domestic Abuse
Irish Rural Link Welcome New Cash Access Law
Laois Library Reunites Missing Library Book From Abroad