Keen to hear more suggestions, but the following are the sources that this site will track:
Irish Water
Environmental Protection Agency (EPA)
Sustainable Water Network (SWAN)
Local Authority Waters Programme (LAWPRO)
River Trusts
Geological Survey of Ireland
Inland Fisheries Ireland
Angling Conservation Groups
Catchments.ie
The Office of Public Works (OPW)
Department of Housing, Local Government and Heritage
Floodinfo.ie
The Water Forum
National Federation of Group Water Schemes (NFGWS)
eTenders.gov.ie
FOI / AIE requests
Bord na Mona
European Commission
University Research Depts