I have the same problem, but it is costing me €2500 to sort out, because I have a private supply (well water), perhaps if you continue to pay your water charges Irish Water may have the money to solve the problem.
Well, it's back with a vengeance again. Horrible taste and smell of mould in our water for the past week. You can also smell the chlorine that has been added to the water to try and kill whatever is causing it. It is absolutely disgusting.