Introduction to the big C
Here's how it starts:
DNA is oxidised by Reactive Oxygen Species (ROS).
The main ROS is hypochlorous acid. This is the human immune
system's last defense against infection. It is called "harmful
to host." It acts by compromising the cell wall of bacteria such
that they "drown" - but it also does the same thing to healthy
When hypochlorous acid enters a cell it can oxidise that
cell's DNA. This creates an "electron hole" in the DNA which
"migrates" until it reaches a guanine component. The electron
hole at a guanine then allows the addition of a carcinogen -
which can go on to become a cancer.
Hypochlorous acid is added to water supplies as a
disinfectant (chlorine is not the disinfectant but a convenient
way of producing the hypochlorous acid).
Whenever hypochlorous acid is added to a water supply the
incidence of cancer doubles within 12 months.
The cancer epidemic comprises just one class of cancers
called "carinomas" which are cancers of the lining (epithelial)
tissues of the lung, stomach, rectum, etc. and are caused by the
oxidation of DNA.
And about that doubling......
When lime is added to chlorinated water to counteract the
acidity caused by chlorination, it doubles the rate of cancer
for every 0.3 shift in pH above 7.0, e.g. a shift from 7.0 to
7.3 will double the incidence of cancer.
Where metal water pipes are used in the reticulation system,
the rate of cancer also increases in proportion to the
percentage of conductive pipe.
So, why chlorinate?
Chlorine is added to water as a residual disinfectant. A safe
water supply requires two barriers to infection. The first is a
clean water supply. The second is to control contamination
within the reticulation system, hence the use of residual
The alternative to chlorination is point of use (POU) or
point of entry (POE) filtration. This still requires a reliable
clean water source and the filtration is the second or final
Filtration to 1 micron absolute captures all bacteria that
residual chlorine would kill and also catches chlorine resistant
bugs such as giardia and cryptosporidium. Its a no brainer.