Work to start on water mains replacement in Cork city Irish Water, working in partnership with Cork City Council, will be carrying out works to replace 740m of water mains on Leitrim Street, Pine Street (North), Coburg Street, Devonshire Street (West), as well as along the N20 (south of Devonshire Street) to Camden Quay. Mary Corcoran WORKS to replace ageing water mains in part of the city are to begin on Monday. Irish Water, working in partnership with Cork City Council, will be carrying out works to replace 740m of water mains on Leitrim St, Pine St (North), Coburg St, Devonshire St (West), as well as along the N20 (south of Devonshire St) to Camden Quay.