Copper Poisoning..
If you drink water that contains higher than normal levels of copper, you may experience vomiting, diarrhoea, stomach cramps, and nausea.

High intakes of copper can cause liver and kidney damage and even death.
Very young children are sensitive to copper, and long-term exposure to high levels of copper water may cause liver damage and death … We do not know if copper can cause birth defects in children. Agency for Toxic Substances and Disease Registry Public Health Statement 1990

Most of Australia's drinking water is by nature soft, acidicand corrosive. Chlorine is also acidic and corrosive. When you add the two together you get a powerfully corrosive mixture that is not easy to manipulate or control. One consequence of this is the increasing occurrence of so-called "blue" water, telltale symptoms of the poisonous corrosion of copper water pipes. Corrosion of domestic copper plumbing is now a serious heath problem.

Copper corrosion is widespread throughout eastern Australia. A 1999 Queensland Department Report indicated that thousands of children at country schools were drinking water contaminated with lead, copper, and other metals from school drinking fountains. These residues, caused by the action of acid water on copper and brass, can have significant long-term health effects on children including impaired intellectual development.

What steps can you take if you suspect that your copper plumbing is corroding?

Corrosion is more likely if your house or apartment is less than five years old, the water is soft, and it sits in the pipes undisturbed for several hours.

Researchers have found that first flush tap water - the water that comes out as soon as you turn on the tap can be a major source of lead and copper contamination. It takes about 10 litres of water to flow through your tap to assure its safety. This should be done every time the system remains unused for four hours or more.

The only way to be sure about the levels of lead and copper in your household water is to have the water tested by a competent laboratory. Testing is especially important in high-rise buildings, because flushing may not be effective. Unlike household supplies, the volume of water necessary to flush all of the polluted water from the pipelines of a building fifteen or twenty storeys high, makes flushing impractical.

You can reduce the amount of metal contamination in tap water
with a point-of-use water purifier.
Always check the device's capabilities and documented performance reducing lead and copper .
Set up an effective and practical maintenance program to make sure that the system is maintained as recommended by the manufacturer."
extract Australia's Drinking Water - the coming crisis John Archer.

OPTION 1
All Counter Top and Undersink units should include a Doulton Imperial Ultra Carb Ceramic Cartridge 78CCER
As well as providing an impervious barrier to bacteria and cysts, including Giardia and Cryptosporidium, this cartridge includes a special carbon medium Brimac 22, which has a special affinity to heavy metals. Will remove up to 99.9% of copper. (see specs)
OPTION 2
A Purestream 4 Stage Reverse Osmosis will remove up to 99% of Copper as well as all Heavy Metals, Minerals, Chlorine, Volatile Organic Chemicals providing absolutely PURE WATER.