The Deposit Return Scheme for plastic bottles is leading to lower litter across the country.
Today's IBAL survey also shows Naas is the cleanest town in the country, ahead of Monaghan and Blanchardstown in Dublin.
Arklow is ranked 16th in the list of 40 towns and cities nationwide and is deemed clean to European norms.
However, Dublin city centre has seen a further deterioration and has been declared "Littered".
Tánaiste Simon Harris Announces €332,100 in Flood Protection Funding for Wicklow
Local TD Calls Out Wicklow County Council's Efforts In Tackling Dereliction In Arklow
Wicklow Producers Invited to Enter Blas na hÉireann Food Awards
Taylor Eyes Focused Squarely On Croker Curtain Call As Katie Seal New Business Venture
Aughrim's John Keenan Suggests Review Of GAA Age Limit After All-Ireland Final Retirement