Medilight Health Care

Dangers of Non-Alkaline Water


  • Offers false sense of security making it a very dangerous water option

  • High risk of bacteria leaching into water if filters are not changed

  • Toxic chemicals and chlorine still remain


It sounds perfectly okay, doesn’t it? Water is a good thing to drink and certainly water that is filtered should be good for us, right?

In fact, that isn’t necessarily the case, but let’s start at the beginning, with what filtered water actually is and why people choose it.

Why Use a Filter?

First of all, it makes sense to find out what exactly you’re hoping to filter out of your water.

Finding the answer to that question also helps with deciding what kind of filter you should be looking at; a filter that literally ‘sieves’ out impurities?

A chemical version that ‘cleans up’ your water as it passes through the filter? Most filter systems work by using activated carbon, that attracts and holds on to impurities.

Carbon removes some, but by no means all, of the contaminants in your water supply.

alkaline water glass

Filters and Bacteria Risk

Well, let’s look at a jug-type version that usually works by water passing through an activated carbon filter. With this type of product, any bacteria ‘captured’ by the filter will remain trapped there  and not removed until the filter is replaced.

  • With the life of a jug filter being up to 6 months, the bacteria remains there for a long time.
  • If you choose to use a filter jug then it’s important to keep the jug constantly refrigerated to avoid the trapped bacteria from multiplying to levels where your health is likely to become affected.
  • If the jug is kept at room temperature, then the conditions mean that the unchecked microorganisms may well thrive.

Anti-bacterial silver nanoparticles in the filter can help to prevent this, but not all jug filters contain them.

Chlorine and Toxic Chemicals

The other important fact to remember is that pour-through jug filters are frequently designed and purchased with taste and smell in mind, rather than filtering out all of the undesirable elements that you’re perhaps trying to avoid.

Specifically, although many filters remove the majority of chlorine, by and large, they do not remove the chlorine by-products Trihalomethanes (THM), a group of four toxic chemicals that can be harmful to health.

The Environmental Protection Agency is unequivocal about the potential risk if more than the maximum contaminant level (MCL) is consumed.

“Some people who drink water containing total trihalomethanes in excess of the MCL over many years could experience liver, kidney, or central nervous system problems and increased risk of cancer.”

The Environmental Protection Agency

The Plumbed-in Option

The other option is an under-counter or counter-top filter that is plumbed to your water supply. That means that all of the water that comes out of the tap with the filter attached will have been passed through an activated carbon filter .

  • The first thing to be aware of is that most filters are designed to be effective where the water supply is a municipally treated one, and not from a private well or a unknown source.

Although fitted water filters do a more  job that a jug when it comes to removing contaminants; as with most things, all plumbed-in water filtration products are not created equally.

Do Some Detective Work

Some products advertise themselves as ‘meeting NSF safety standards’ or ‘tested to NSF standards,’ which is, arguably, a somewhat misleading claim.

Being a certified product means that the NSF have vetted it and that the filter has been tested and met the NSF standards.

It’s definitely worth using the searchable database to find out more about particular filter models before you buy


Changing Filters – How Often?

Water filters need to be replaced with variable frequency. Some filters must be replaced within a few weeks; others last for months.

  • How effective the filters will be as they near the end of their life is something else that will need research before parting with any money, as the different types and brands vary a great deal.
  • Some types of filter have a warning system that alerts you once the filter is beginning to become ineffectual, and others rely on you checking manually.

Either way, for a filter system to continue to effectively remove impurities, the filter itself needs to be checked and replaced regularly, something that needs to be factored into the cost of buying a filter system.



The process of producing reverse osmosis water is a vital one. Over the years, it has meant that people in dire circumstances across the world can drink clean water.

Troops and civilians in battle-torn countries that have lost every semblance of organized infrastructure can use reverse osmosis to make pure, drinkable water.

But how? Exactly what is the process? Well, imagine that you’re in a situation where there’s only brackish or dirty water available to drink. Drinking untreated, contaminated water like that will temporarily slake your thirst, but will almost certainly expose you to the risk of water born diseases.

Leads to mineral deficiencies by leaching valuable minerals from your bones and teeth while trying to stabilize itself

Known as “Dead Water” since it has no health-giving properties

It will leach metals and other dangerous substances from your water lines, tanks and fittings before going into your glass

Cooking with RO water will remove 60% of healthy minerals from your food

How Does Reverse Osmosis Work?

Reverse osmosis works by forcing the impure water through a series of semi-permeable membranes which effectively ‘clean’ the water. And it is the case that once water has been subjected to that process, it is very, very clean. Too clean, in fact.

Too clean? How can that be the case? Surely the best water for us to drink is water that’s completely unpolluted and pure?

In the case of reverse osmosis, the water really is too clean. The filtering process removes all of the contaminants; but it also removes the good things that we need for our bodies to thrive.

Are You Drinking Dead Water?

Essential minerals such as calcium and magnesium are removed, which are vital for healthy teeth and bones, among other things. As a result, reverse osmosis water is often referred to as ‘dead water.’ 

  • And it’s not only the fact that the reverse osmosis water doesn’t deliver those things
  • point of view – is that the water itself becomes opportunistically parasitic.

Demineralised water that has not been remineralized, or low-mineral content water – in the light of the absence or substantial lack of essential minerals in it – is not considered ideal drinking water.”

It’s a complex process, but essentially, reverse osmosis water wants to remineralize itself, and so to achieve that, once it’s inside your mineral-rich body

  • the water is passed by your body in the form of urination and the minerals are lost.
  • If you water over an extended period of time, there is a real risk that you would experience mineral deficiency as a result.
  • And we’re not talking about after years of drinking low-mineral water the effects would make themselves known after only a few months.

Nullifying Nutrients

It’s not only drinking reverse osmosis water that can impact on your health. Cooking with low-mineral water can cause the food to lose over half of their essential nutritional elements.

  • “Since most nutrients are ingested with food, the use of low-mineral water for cooking and processing food may cause a marked deficiency in total intake of some essential elements that was much higher than expected with the use of such water for drinking only.

The current diet of many persons usually does not provide all necessary elements in sufficient quantities, and therefore, any factor that results in the loss of essential elements and nutrients during the processing and preparation of food could be detrimental for them.”

There are other risks; reverse osmosis water carries a greater risk of bacterial infection, and because of its inherently unstable nature, low-mineral water can have a dissolving effect on metals.

This means that any pipes, holding tanks or containers for reverse osmosis water can become corroded by the water, with dangerous metalsincluding lead in some reported cases – leaching into the water; which is then consumed.

What The World Health Authority Thinks

Reverse osmosis water is very acidic. It is possible to treat the water with minerals to stabilize and remineralize the water, which should increase its alkalinity. The World Health Organization (WHO) has previously expressed concern in a report that the minerals used for stabilizing low mineral water are not always food-grade quality.

  • The WHO have previously made their advice plain, stating that reverse osmosis water, “has a definite adverse influence on the animal and human organism.”

Despite all of this, reverse osmosis water has enormous value as a short-term fix for millions of people who do not have access to clean water. But it can never be considered a long-term solution. The health risks are well-documented and impossible to ignore.

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