Bacteria in your drinking water

PETALING JAYA: The water you buy from vending machines may not be as clean as you think.

Twenty-nine samples of water were drawn from such machines throughout the Klang Valley – and almost all were contaminated.

There were harmful E. coli, Coliform and Clostridium perfringens microbes – the same kind of bacteria found in untreated sewage.

Read full article at The Star

Common Symptoms of Dehydration


Malaysian Polluted Rivers

Why choose Coway over other brands?

There are many brands of RO membrane fi lter in the market. What is the difference
between Coway and other brands?

Woongjin Coway successfully developed source technology of reverse osmosis (RO)
membrane, which is recognized as the most excellent fi lter, and it acquired Saehan
Industries in January this year, a company which developed world-level fi ltering
technology, becoming the world’s third largest water fi lter manufacturer (Ref :
Guiness Books of Records).

Its latest RO water filtration devices can reduce the volume
of foul water of daily lives by more than 50% by developing waste-water decreasing
system, adding new functions of improving valve and automatic flushing functions.
Its technology process was recognized by WQA, the world’s authoritative water
certifi cation organization, and it is equipped with filter technology enabling it to supply
water fi ltration devices in any region of the world, not to mention their slim footprints.
For technologies related to filter, Woongjin Coway registered 3 patents and filed
applications for 3 technologies in Korea while applying patents in the United States,
Japan, Europe and China for 3 technologies. Targeting the world market, the company
constructed in September last year a comprehensive filter production complex in Korea,
investing 22.2 billion won.

Do Reverse Osmosis Systems waste a lot of water?

In order to achieve RO water, we need to apply pressure on the tap water to force the
water pass through the membrane. In this actual application, most of the impurities from
the tap water will be blocked by the membrane leaving desirable purifi ed water at the
other end of the membrane.

In the process, water is use to drain which actually helps keep the membrane clean by
fl ushing water over the incoming side of the membrane to remove particulates and dirt.
In Coway, we add automatic valve controller a waste-water decreasing system to
sustain the ratio of 2:1 and we have also FLC to control the water fl ow. The water only
drain when the tank is empty but it stops when the tank is full.

Is Reverse Osmosis Water = Dead Water?

I’ve heard that RO water is called “Dead Water” without mineral, is it correct?
The purest water is water free from all minerals, chemicals and heavy metals. Many
of those who oppose the use of RO water claim it is ‘dead’ water, and that the life
element in RO water has been removed by the RO process.

To disprove this argument we should point out that the minerals in ordinary water, as it is found in wells, in springs,
and coming from the city faucets, is also inorganic. Should these minerals be organic
or inorganic? Many feel that our drinking water is a good source of minerals needed by
the human body.

• Minerals found in drinking water are known as “inorganic.”
• Minerals found in our food supply are known as “organic.”

Our body chemistry is composed of 19 organic minerals, which comes from living or has
lived. When we eat an apple or any other fruit or vegetable, that substance is living. It
has a certain length of life after it has been picked from the vine or tree. The same goes
for animal foods, fi sh, milk, cheese and eggs.

Dr. Henry A. Schroeder, eminent scientist and world authority on minerals, says: “The
minerals which the human body needs that are in the water are insignifi cant compared
to those found in food.”

The American Medical Journal states, “The body’s need for minerals is largely met
through foods, NOT DRINKING WATER.”

Fact: The organic minerals in tap water represent only 1% of the total mineral content
of the water.

Fact Sheet : Pharmaceuticals in Water

By Water Quality Association
Home filtering systems provide best protection for drinking water.

As news reports about pharmaceuticals in water circulate, here are several facts for
consumers to consider:
• Filtering systems in the home provide the highest technology available for treatment of drinking water. Less than two percent of all water consumed is ingested by humans,
making these “point-of-use” systems the most cost-effective and environmentally
•  While utilities are required to meet safety standards set by the U.S. EPA, home
fi  ltering systems act as a fi  nal contaminant barrier and can further purify water for drinking.
• While specific product performance standards have not yet been developed for
pharmaceuticals, many point-of-use technologies have proven effective for some
of these emerging contaminants. Nano-fi  ltration and reverse osmosis systems
removed drugs tested by the Colorado School of Mines at full-scale facilities in Arizona
and California. Activated carbon, distillation, ozonation, and advanced oxidization
have likewise shown promise in removing many of these contaminants. Individual
manufacturers can also test products for specifi  c pharmaceuticals if they choose.
• According to Utah State University Extension, up to 90 percent of oral drugs can
pass through humans unchanged. These often then move through wastewater into
streams and groundwater. It is generally cost prohibitive for utilities to use systems
such as nano-fi  ltration, long contact activated carbon, and reverse osmosis. However,
these technologies have proven successful at removing many contaminants in home
water treatment systems.
• In addition to pharmaceuticals, water quality experts are examining other emerging
contaminants, such as those found in personal care products and pesticides. These
are often referred to as endocrine disrupting chemicals. Home filtering systems have
also been proven to treat threats such as lead and mercury.
• WQA provides  Gold Seal certifi  cation for products that remove a variety of
• Consumers can learn about different treatment systems and  find locally certified
dealers by visiting the WQA Web site’s Gold Seal and  Find A Professional
• More information is available at WQA’s Water Information Library online, which
includes a search feature.
(Source from Water Quality Association International Headquarters & Laboratory)

How safe is bottled water?

It still has the risks of infectious agents, toxic chemicals and radiological hazards. Bottled water sources are vulnerable to agricultural or industrial pollutants. Packaging may be a potential health risk.
Plastic bottles made from polyvinyl chloride (PVC) or polyethylene (PET, HDPE,
PE), have the risk of leeching their components into the water when stored at room
temperature or above. This risk increase as storage time is extended.
Bottlers are not required to put manufacturing dates on their products. Thus, consumers
cannot determine how long bottled water has been on the supermarket shelves. Bottled
water (with the exception of drinking water for babies) is not sterile, and contains trace
amount of bacteria naturally present, or introduced during processing.

What are the symptoms of dehydration?

What are the symptoms of dehydration?

We can live without food for a few weeks, but without water, we can only live for a few days.


  • 1% people get thirsty
  • 2% work efficiency goes down
  • 4% people feel helpless, confused and uneasy
    Also, resistance to stress becomes weaker and they become nauseous
  • 20% people can die

Major Symptoms

• Headaches

• Tiredness

• Poor concentration

• Increased risk of developing kidney infections

• Constipation

But what do we really drink every day?

Most drinks are DO NOT supply enough water, and some even cause dehydration

  • ALCOHOL : Alcohol causes dehydration
  • CARBONATED BEVERAGES : Most carbonated beverages contain caffeine, sugar and other additives.
  • TEA : Caffeine from Tea can cause dehydration by diuresis.
  • COFFEE : Coffee facilitates diuresis. Frequent urination not only results in dehydration, but it also damages health by leeching minerals likes magnesium from your body

How much water we need per day

Function of Water in the Human Body

Water is easily accessible in most parts of the globe, in every household. Perhaps
because it is cheaper and most plentiful than any other beverage, it is easy for us to
overlook its tremendous importance.

Water is necessary for the human body to function properly. It plays many more roles
than what we normally realize, such as helping us to exhale, stabilizing our body
temperature, humidifying the air to help our breathing, eliminating toxins and waste from
our bodies, and many other vital functions.

How much water does our body need everyday?

We need 2 to 2.5 Liters of water per day to fully satisfy the physiological needs of the

The water in our bodies must be continuously replenished. On average, our bodies lose
600ml of water daily through breathing, 500ml through our skin, and 1400ml through
urination. About 2500ml of water is necessary for every day of your life. We take in
aprrox. 500ml of water daily through food, but we still need 2000ml more, which we can
only get by drinking water.

Average amount of water an adult drinks each day
Recommended Amount by WHO = 2l
U.S = 1l
Korea = 0.6l
Japan = 0.9l

The WHO recommends 2 liters of water daily for adults. For a child weighting 10kg, 1 liter
daily is recommended.

(Source from IOM/Institute of Medicine of the National Academy of Sciences)