Sonya Cashman and her family live in Blackpool in Cork city. Their household has been plagued with dirty, discoloured water for 18 months. John Mulcahy lives in Ballyvolane with his family, which includes two-year-old twins. Their household has been plagued with dirty, discoloured water for three years. Sonya and John will be speaking at a public community meeting tonight organised for all households directly affected by this issue. Last night, Uisce Éireann told the press that it would not accept the invitation it…