It seems the cause of the Brisbane water smell and taste problem is high manganese and geosmin levels. Here’s an extract from a press release from the Queensland Water Commission:

“Test results that we received today indicated that these measures are working and there has been a reduction in manganese and geosmin levels, and the community should start to experience improvements to the taste and odour of their tap water by the end of the week.”

The full press release can be seen here.

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