Our blog | Renewell Water

Contact Us

Package Offers Up to 35% OFF

My Cart

My Wishlist

View Wishlist

Guest

14 Articles

Reverse Osmosis ×

How Long Does a Reverse Osmosis Membrane Actually Last?

Most reverse osmosis membranes last around two years in Irish homes. On the ArkkZ Water Filtration System, the membrane is designed to last up to 24 months, with the pre filter changed every 12 months...

Drinking Water RO Maintenance RO Membranes Reverse Osmosis

25 Sept 2026

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

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

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

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

Can You Get a Water Filter if You Rent a Home?

Renting does not rule out a proper water filter. A complete reverse osmosis system can be installed by using a small dedicated tap which fits into one of the spare holes that most sinks already have. ...

Clean Drinking Water Filtered Water RO Water Filters Reverse Osmosis Single tap Under Sink Water Filter triple faucet

18 Aug 2026

Dr. Cian Gallagher

Does Reverse Osmosis Water Remove Healthy Minerals?

Yes. Reverse Osmosis water has lost most of its calcium and magnesium. For most people this is not a real worry. Food gives us most of our calcium and magnesium, not water. The World Health Organizati...

Clean Drinking Water Essential Minerals Filtered Water Remineralizer Reverse Osmosis

11 Aug 2026

How Do You Know If Your RO Membrane Is Bad?

How Do You Know If Your RO Membrane Is Bad? Quick answer: A bad RO membrane usually shows itself through a change in taste, slower water flow, more frequent filter changes, or a rising TDS reading if ...

Filtered Water RO Membranes RO System RO performance Reverse Osmosis TDS testing Water Filtration Water Purifier membrane replacement pre-filter maintenance

4 Aug 2026

Dr. Cian Gallagher

Filter Jug, Reverse Osmosis or Bottled Water: What Your TDS Reading Really Says

One simple test tells you a lot about your drinking water. It costs almost nothing. It is called TDS, or total dissolved solids. A small meter reads how many dissolved particles float in your glass. T...

Bottled Water Filtered Water Reverse Osmosis TDS level jug filter

27 Jul 2026

Does a Reverse Osmosis System Fit Under a Normal Kitchen Sink?

The real dimensions, an honest look at old tank systems, and why your press under the sink is safe You have done the research. You know reverse osmosis is the gold standard for drinking water at home....

Arkkz RO System Sizing Reverse Osmosis Reverse Osmosis System Tankless Under Sink Water Filter

2 Jul 2026

Reverse Osmosis Systems: Maintenance and What Homeowners Should Know

Busy routine, right? Picture your usual week: the big shop, the school runs, the endless washing. Then there's bottled water. Loading heavy multipacks into the trolley, carrying them home, and watchin...

Clean Water Filtered Water RO Maintenance Reverse Osmosis Water Filters

29 Jun 2026

Jug Filter vs Reverse Osmosis: What's Really the Difference?

Renewell Water Filtration Limited, Joao Barreto

Jug Filter vs Reverse Osmosis: What's Really the Difference?

I remember the first time I switched from a jug filter to a proper Reverse Osmosis system . My kids had been getting through two or three jugs of filtered water a day, and I genuinely thought I was do...

Clean Drinking Water Filtered Water RO Water Filters Reverse Osmosis Tap Water

25 May 2026

1
2

Our columnists

Dr. Cian Gallagher

Water Scientist & Researcher

Aoife Flynn

Columnist, Mom & Homemaker

Simon Newell

Renewell Water Founder

Dr. Eoghan Kelly

General Practitioner