The Queensland government is yet to deliver on a promise to list all chemicals used in coal seam gas mining on a website.
The state government says it has banned the use of cancer-causing chemicals collectively known as BTEX.
But even so, farmers and residents in the gas fields of southern and central Queensland are concerned about the impact of fracking - the process of injecting water into the cracks in rocks to extract the gas - on underground water storages they use for cattle, crops, domestic purposes and, in some cases, to drink.
CSG companies say 99 per cent of fluid used to frack the coal seams is water and sand.
In a YouTube address posted on July 14, Premier Anna Bligh said the government was constructing a website that would detail the chemicals used in each CSG project.
But a Department of Environment and Resource Management spokesman on Thursday said it was unclear when the website would be ready.
Ms Bligh has said the chemicals included hydrochloric acid used in swimming pools and materials used in disinfectants.
"These materials, fluids and chemicals are not confidential or secret," Ms Bligh said on YouTube.
"The environmental approvals for all of the projects ... in Queensland are available on request, but I think it's important the public can have access to these documents easily.
"We are in the process of establishing a website so people can see in relation to every project exactly what materials and chemicals have been authorised to be used."
The Australian Petroleum Production and Exploration Association and various CSG companies have posted a list of chemicals on their websites.
But independent MP Rob Messenger said it wasn't easy for people to find.
Mr Messenger has asked Ms Bligh to detail the chemicals used by every CSG company in Queensland in a question on notice during parliament on Wednesday.
Ms Bligh has 30 days to respond.
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