Yes, in most cases, it is perfectly safe to drink the tap water in Ireland. In fact, according to the official statistics by Irish Water, 99.6% of households currently receive a water supply that is safe to drink.
Instead of buying water bottles, refill your reusable water bottle at your hotel or at one of the stops on the Ireland Tap Map app.
One of the best tips we can give you to travel more sustainably is to say no to single use plastic. Refilling your reusable water bottle will not only cost you less but it is also more convenient and will help you to lower the impact that your travels might have.