2013-14 – Ouse (Tasmania) – Trichloroacetic Acid, Dichloroacetic Acid

Ouse (Tasmania) – Chloroacetic Acids:

Trichloroacetic Acid: 153μg/L (DHHS Average 2013/14)

Dichloroacetic Acid: 120μg/L (DHHS Average 2013/14)

12/5/14: Ouse (Tasmania) Trichloroacetic Acid 130μg/L

4/11/13: Ouse (Tasmania) Trichloroacetic Acid 150μg/L

28/10/13: Ouse (Tasmania) Trichloroacetic Acid 160μg/L

30/9/13: Ouse (Tasmania) Trichloroacetic Acid 150μg/L

12/8/13: Ouse (Tasmania) Trichloroacetic Acid 190μg/L

29/7/13: Ouse (Tasmania) Trichloroacetic Acid 140μg/L

12/8/13: Ouse (Tasmania) Dichloroacetic Acid 120μg/L

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