Hamilton (Tasmania) – Trichloroacetic Acid, Dichloroacetic Acid:

June 30 2014: Hamilton Trichloroacetic Acid 140ug/L

October 28 2013: Hamilton Trichloroacetic Acid 130ug/L

August 12 2013: Hamilton Trichloroacetic Acid 200ug/L

July 29 2013: Hamilton Trichloroacetic Acid 180ug/L

August 12 2013: Hamilton Dichloroacetic Acid 120ug/L

July 29 2013: Hamilton Dichloroacetic Acid 110ug/L

Australian Guideline: Trichloroacetic Acid 100μg/L, Dichloroacetic Acid 100μg/L

“Chloroacetic acids are produced in drinking water as by-products of the reaction between chlorine and naturally occurring humic and fulvic acids. Concentrations reported overseas range up to 0.16mg/L and are typically about half the chloroform concentration.
The chloroacetic acids are used commercially as reagents or intermediates in the preparation of a wide variety of chemicals. Monochloroacetic acid can be used as a pre-emergent herbicide, dichloroacetic acid as an ingredient in some pharmaceutical products, and trichloroacetic acid as a herbicide, soil sterilant and antiseptic.” Australian Drinking Water Guidelines – National Health and Medical Research Council…

There are no epidemiological studies of TCA carcinogenicity in humans. Most of the human health data for chlorinated acetic acids concern components of complex mixtures of water disinfectant by-products. These complex mixtures of disinfectant by-products have been associated with increased potential for bladder, rectal, and colon cancer in humans [reviewed by Boorman et al. (1999); Mills et al. (1998)].” Ref: tmp/Trichloroacetic acid (TCA) CASRN 76-03-9 IRIS US EPA.htm