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Dr. Cian Gallagher

Why You Need A Reverse Osmosis System If You Have A Private Well?

Household wells in Ireland sit outside the drinking water regulations, so nobody tests them unless you do. A reverse osmosis system at your kitchen tap removes a wide range of dissolved contaminants f...

Drinking Water Home Water Private Well Renewell Water Reverse Osmosis Water Filtration Water Quality Water Treatment

21 Sept 2026

Does a Water Softener Make Your Water Taste Salty?

No. A water softener that is working well should not make your water taste salty. The salt never flows to your taps. It is only used to clean the softener inside. A small amount of sodium does replace...

Hard Water Hard Water Solutions Soft Water Water Softener

17 Sept 2026

Dr. Eoghan Kelly

Is Reverse Osmosis Water Safe for Babies?

For most families in Ireland, water from a well maintained reverse osmosis (RO) system can be used to make up baby formula. You should still boil it and make the bottle with water that is at least 70°...

Baby Health Drinking Water Drinking Water Safety Health & Wellness Reverse Osmosis

16 Sept 2026

Dr. Eoghan Kelly

Why Do Athletes Drink Hydrogen Water?

Hydrogen water is ordinary water with extra molecular hydrogen (H2) dissolved into it. Athletes took an interest after Japanese research suggested that hydrogen acts as a gentle antioxidant in the bod...

Drinking Water Health & Wellness Hydration Hydro+ Hydrogen water

14 Sept 2026

ArkkPure & ArkkZ: Everything You Need to Know

Every so often a customer sends our team a photo of their new system with one simple question. Why does my invoice say ArkkZ when the unit says ArkkPure? It is a fair thing to ask. I would ask it myse...

Arkk Pure Arkkz FAQ Reverse Osmosis

10 Sept 2026

Dr. Cian Gallagher

Is Hard Water a Problem Where I Live in Ireland?

Hard water is common across much of Ireland. Roughly half of the Republic sits on limestone rock. The midlands and much of the east and south tend to be hardest. The west and the granite uplands are u...

Hard Water Hard Water Solutions Limescale Water Softener

7 Sept 2026

Dr. Cian Gallagher

What Is Hydrogen Water?

Hydrogen water is ordinary water with hydrogen gas dissolved in it. The gas floats free between the water molecules. It is not the hydrogen already locked inside them. Water can only hold a little of ...

Drinking Water Hydration Hydro+ Hydrogen water

4 Sept 2026

Bottled Water vs Water Filter: The 6 Year Cost in Ireland

One person buying a bottle of water a day in Ireland spends about €547.50 a year , according to Refill Ireland. That is €3,285 over six years. An ArkkZ reverse osmosis system costs €439 today, with fi...

Bottled Water Comparison Cost and Maintenance Reverse Osmosis System

2 Sept 2026

Dr. Eoghan Kelly

What Japan Has Learned About Hydrogen Water in 60 Years

Hydrogen water is not new. Japanese homes have used these devices since the 1960s, and Japan's health ministry approved them as medical devices in 1965 for a narrow set of digestive symptoms. Around 2...

Drinking Water Health & Wellness Hydration Hydro+ Hydrogen water

31 Aug 2026

How to Compare Water Softener Systems Before You Buy One

To compare water softeners properly, start with your actual water hardness, then check some things on every system you look at. Those are the size of the resin tank, the flow rate, where it will physi...

Hard Water Solutions Soft Water System Under Sink Water Filter Water Softener Whole House Filtration

28 Aug 2026

Dr. Eoghan Kelly

How Much Water Should You Drink Every Day?

Most adults in Ireland need about 2 litres of fluid a day for women and about 2.5 litres a day for men , according to Safefood. Children need less, and active people or those in warm weather need more...

Drinking Water Filtered Water Health & Hydration Hydration tips Tap Water

26 Aug 2026

Common Mistakes to Avoid When Buying an RO System

The most common mistakes when buying an RO system are picking on price alone, choosing the wrong size, and ignoring ongoing filter costs . Skipping installation checks and forgetting to ask about wate...

Arkkz Clean Drinking Water Filtered Water Reverse Osmosis Water Filter

24 Aug 2026

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Our columnists

Dr. Cian Gallagher

Water Scientist & Researcher

Aoife Flynn

Columnist, Mom & Homemaker

Simon Newell

Renewell Water Founder

Dr. Eoghan Kelly

General Practitioner