I refer to the article just posted on Harnesslink
http://www.harnesslink.com/www/Article.cgi?ID=97591
In particular the statement "
Raglan was found to have 0.44 milligrams of arsenic per litre, above the allowable 0.30, but Tobin said it was highly unlikely that a regulatory threshold set in Hong Kong 30 years ago was appropriate for the entire continent of Australia.
The figure was set after measuring the arsenic levels of 8000 to 10,000 horses at one track in Hong Kong. Anything above a certain level on the distribution curve was deemed to be positive despite the statistical certainty that some outriders were still part of the normal population.
Tobin said nobody knew what a normal arsenic level was in Australian racehorses. Arsenic was a highly variable environmental substance, and suburban Australia was much more variable than urban Hong Kong, affected by a myriad of things like agriculture, mining and local rocks. It was ``highly likely'' that a high normal for arsenic in Australia was higher than the statistical cut-off for Hong Kong of 30 years ago."
Surely we are not using standards set 30 years ago.
With so many potential changes to both Australia and New Zealand's agriculture in that time, the chances of many readings being over a limit is possible via feed.
Consider this, in Australia, fracking with coal seam gas, what's going into the underground water system which comes out through bore water? This not just drinking water but irrigation water.
In New Zealand, the rise of ground water due to the earthquakes, which was extreme to watch on TV.
Maybe its time for a Regional set of standards to be done to verify the International standards are still fair for our region. What if we unknowingly are getting caught up in natural changes which many are being punished for.
I may not have expressed myself well here but my concerns are Urban Hong Kong is vastly different to our Rural Nations