Clients of Sweeney Consultancy include:
EPA
NPWS
NIEA
IFI
Irish Water
LA Waters
Coillte Teoranta
Carlow Co. Co.
Cork Co. Co.
Dunlaoghaire Rathdown Council
Kildare Co. Co.
Kilkenny Co. Co.
Tipperary Co. Co.
Offaly Co. Co.
South Dublin Co. Co.
Tipperary Co. Co.
Waterford Co. Co.
Wexford Co. Co.
Glanbia plc
Dairygold Food Ingredients Ltd.
Irish Distillers Group
Atkins Engineering
Malone O'Regan Environmental
Tobins Engineering
Byrne Looby Engineering
Fehily Timoney Engineering
ARUP
WYG Ireland
