How To Make Your Own Bottled Water At Home

Ever thought about making your own bottled water at home? 

Depending where you live and the sensitivity (or otherwise) of your taste buds this could be a very short article!


  1. Select a re-usable bottle of your choice, I prefer stainless steel myself.
  2. Walk over to the tap, fill the said bottle and put the cap on.
  3. Taste the water, does it taste delicious like fairies have scooped up the dew from fresh mountain grasses? If so then here endeth the lesson.
Make your own bottled water at home

However if your water tastes like you are licking a rusty nail, or you have taken a gulp from your local municipal swimming baths or even if just like many people you just don’t like the taste, then read on.

Before we go any further let’s talk about the ‘quality’ of tap water. The quality of tap water in the UK is second to none. Independent tests show UK tap water is among the safest in the world. It undergoes hundreds of taste tests every year, and is checked 30,000 times a year for chemicals and bacteria. The Drinking Water Inspectorate (DWI) reported a 99.96% compliance with standards by UK water companies.

So now we know it is safe we are going to focus on taste. Bottled water companies promote the idea that their water is ‘pure’. Pure water, ie free from im ‘pure’ –ities actually tastes flat, and can easily pick up flavours from bottles, cups and the air around. Therefore most of the best tasting waters in the world contain oxygen and minerals. Some of the mainly French and Italian brands of mineral waters, collect calcium, sodium, potassium and magnesium from the rocks they run through.

Just to be clear the quantity of minerals is not significant for your health. If your body needs a mineral top up for whatever reason, then go to the health food shop, in such small quantities bottled water won’t help. However they can add to the taste of the water. Most ‘natural’ spring waters contain anywhere from 50 to 300mg/l of stuff other than water, known as “total dissolved solids” or TDS. In the US any water with a TDS of more than 250 can be marketed as ‘mineral water’. In the UK all bottled waters must contain a minimum of 60mg/L calcium hardness.

So with about 50% of all bottled waters being filtered tap waters (representing 30% of bottled waters sold in supermarkets), then adding back some taste to a ‘purified’ tap water is important. This process is called re-mineralization, and just like in mother nature, is achieved by passing water over rocks with the minerals embedded in them.

Now back to the original lesson about how to make bottled water at home. As taste is so subjective so you need to find a brand of bottled water that you like and then read the ingredients label. Yes there is an ingredients label on bottled water! I am going to use as an example Coca Cola’s ‘Smart Water’. From the label it states:-

Ingredients Smart Water
Calcium Chloride 10mg
Magnesium Chloride 15mg
Potassium Bicarbonate 10mg
Total Dissolved Solids (TDS) 35ppm

You need to start off with ‘pure’ water with zero (or pretty close) TDS. This can be produced using a Reverse Osmosis, RO, system or distilled water will do. We now need to make a home-made Electrolyte concentrate

1 L Pure water

1.50g Magnesium Chloride*

1.00g Potassium Bicarbonate*

1.00g Calcium Chloride*

Mix all the ingredients together and shake well, the initial cloudiness will clear. It is only tiny air bubbles which rise and disappear. Then take this ‘concentrate’ and add 10g of it to a new litre of RO or distilled water.

There you have Smart Water!

*These ‘ingredients’ might sound like you need a chemistry lab to find them but actually they are available in the high street.

Magnesium Chloride is available as a dietary supplement from health food shops.

Potassium Bicarbonate is available through beer and wine homebrew shops.

Calcium Chloride is also used in home beer and wine making so can be found in homebrew shops.

Ian Webb, Commercial Director at EceauThe ultimate in drinking water systems

Crystal clear, pure and delicious, saves time and money at the touch of a button.

  • 05/02/2015
  • eceau