Dublin City Council


Question to City Manager               City Council Meeting 04/07/2011


            Can the Manager provide answers to the following questions in relation to the Ringsend Sewage Treatment plant: 

  • How many complaints were received from the public about unpleasant smells emitting from the Ringsend sewage treatment works in 2006, 2007, 2008, 2009 and 2010?
  • Does the Manager consider the measures taken to date to have been successful in reducing the nuisance from the treatment plant?
  • Can the Manager provide the elected councillors with a list of the works undertaken to reduce the nuisance perceived by the public from the peak year for complaints received to today and the costs associated with each?
  •  Are there any further works planned to reduce nuisance further?



  • Following complaints allegedly attributable to Ringsend Wastewater Treatment Works, Dublin City Council, together with the Plant Operator (Celtic Anglian Water), put in place a methodology for recording and investigating odour complaints received.  We have a 24-hour odour hot-line for public complaints which is publicised on the Dublin City Council website. Calls made to this number 1800 242739 or by email to enquiry@caw.ie are logged, thoroughly investigated and responded to.  We also report on an annual basis to the EPA on odour issues.

    The following number of odour complaints were received from the public over the past 6 years:




Number of Complaints received











2011 to date



  • All complaints are logged and the complaints since 2007 have been posted on the Dublin City Council website.  While the table shows the list of odour complaints received, it has been found in latter years that not all of these odour complaints have been attributable to the treatment works themselves.   Where they are not directly attributable to the works themselves they are not registered as complaints against the works.

Dublin City Council implemented a number of permanent odour control improvements over a 3-year period up to 2008.  These improvements reduced odorous emissions by 75 percent from the Works.  These physical improvements, coupled with an enhanced operations focus that includes a full-time odour control specialist, have reduced the frequency and intensity of off-site odour events.

The reduction in odour complaints received over the past number of years indicates that the measures put in place are working satisfactorily.

  • The following works were undertaken to reduce the odour nuisances and the costs associated with each is tabulated:






Biogas sphere repair.


Covered channels, new Odour Control Unit (OCU).
Covered north lamella weirs, new OCU.
Covered south Lamella weirs, new OCU.
Covered Intermediate Lift Pumping Station, new OCU.


New centrifuge with minimal odour emissions. Rebalancing of operational headworks, new OCU.


Combined heat and power biogas pre-treatment


Dryer combustion chambers.


Permanent lamella covers, OCUs.


Further odour reduction works are planned as part of the advance works associated with the intended Extension to the Treatment Works.  These will include odour control facilities for the thermal dryer buildings, the sludge processing building, screenings building and grit storage facility.




Can the Manager organise a meeting between representatives of the relatives of the 1916 signatories, Cllr Ring, Cllr Perry and Dublin City Council’s Conservation Department and Heritage department.


A meeting will be arranged between the Councillors and representatives of the relatives mentioned.  I will be in touch with the Councillors to arrange a suitable date.


Can the Manager provide the figures for the monitoring of the HGV axle ban, any subsequent fines issued and the number of fines paid?


Enforcement of the HGV cordon is a matter for An Garda Síochána, who have been requested to provide updated figures.  These will be circulated when received.

            Can the Manager detail the plan to repair the roads and ramps damaged by the weather conditions at the beginning of the year?  Can he estimate the cost of the repairs and confirm the amount of funding available from central Government for this work?

Road repair, re-construction and re-surfacing works, including for the reconstruction of ramps, required as a result of the deterioration of the road network from usage over time and severe weather effects, are currently being implemented on the national primary, regional and local road network throughout the City as part of Road Maintenance Services’ programme of works for 2011.

It is difficult at this time to differentiate between the deterioration of the road network as a result of general usage and the deterioration attributable to severe weather effects only. 

This programme of works is funded from central Government as follows:

  • €12 million for carriageway renewal works on national routes, public transport routes and cycle routes, which is currently subject to the approval of the National Transport Authority.
  • €670,000 for road maintenance works on the City’s national road system.
  • €6,270,000 for road maintenance works on the City’s regional and local road system.

The National Transport Authority-funded carriageway renewal works on 23km or 275,000m2 of road network are currently planned to take place from August to November 2011 at the following locations:

  • Swords Road (Santry Avenue to Shantalla Road)
  • Merrion Road / Northumberland Road (Nutley Lane to Shrewsbury Park and Sandymount Avenue to Haddington Road)
  • North Quays (Queen Street to O’Connell Street)
  • Finglas Road (The Willows to Botanic Road)
  • Donnybrook Road (Nutley Lane to Eglinton Terrace)
  • Dawson Street (St. Stephens Green to Nassau Street)
  • Clanbrassil Street (Grove Road just North of Lombard Street West)
  • Phibsborough Road / Western Way (Connaught Street to Mountjoy Street)
  • Dorset Street / Drumcondra Road (Fitzroy Avenue to Portland Place)
  • Junction and approaches of Malahide Road / N32 Junction
  • Conyngham Road (South Circular Road to Infirmary Road)
  • North Road, Finglas (St. Margaret’s Road to a point South of Charlestown Place)
  • South Quays (Parliament Street to Bridge Street)
  • Pearse Street (Westland Row / Lombard Street to Tara Street)
  • St. John’s Road West (Victoria Quay to South Circular Road)
  • Templeogue Road (Terenure Road West to Fortfield Road)
  • Swords Road / Drumcondra Road (just south of Collins Avenue at Iveleary Road to Griffith Avenue)
  • North Wall Quay / Custom House Quay/Beresford Place/Eden Quay (from New Wapping Street to O’Connell Street)
  • George’s Quay
  • Townsend Street (Lombard Street East to Tara Street)
  • Ballyfermot Road / Con Colbert Road (Kylemore Road to N4)
  • Kylemore Road / Walkinstown Avenue (Kylemore Park North to Walkinstown Avenue


Works on the repair and replacement of 156 ramps at various locations across the city are currently being implemented.  In addition, works on the reconstruction and overlay of 79,893m2 of road carriageways and the reconstruction of 7,052m2 of footways on regional and local roads across the city will continue until the end of November.  Further details of the locations of these works can be made available, if required.