Very much so!

As you travel around Ireland you will notice slightly different flavors to the local water. Much of it is very sweet and pure.

However there are areas where there are higher mineral counts than others, which may give the water a slightly yellow tinge or metallic taste, such as Lisdoonvarna in the northwest part of County Clare. This is a Victorian era spa town. People came from all over Ireland, the UK and Europe to sample the mineral waters here in the spa treatment, which you can still partake today. The water here is high in iron and magnesium, which leave the skin glowing and soft after a good soak, though is not ideal for washing your hair in as the mineral cling to the hair, making brushing difficult, especially for those with long hair.

In the cities you may get a slight taste of chlorine from treated water, but in the country you'll find water in it's natural state. Those accommodations on well water will have especially sweet water.

Never drink from rivers and streams or other natural bodies of water as they can be polluted with anything from animal waste to human pollution, even if it's not evident. Well water is filtered through porous stone to filter out impurities, and in most cases, there are additional man made filtration systems in place as well.

Be sure that you are traveling with bottles of water in your car though. You can purchase a bottle for each traveler, then refill at each accommodation in the morning before setting out, or by asking cafe's along the way to fill up if you drink it all.