TWO Blacktown groups have joined an alliance of 50 groups from across Sydney, the Illawarra, Southern Highlands and Blue Mountains to protect drinking water from destructive mining.
They are Blacktown and District Environment Group (BDEG), led by Martin O'Reilly, and Stop CSG Blacktown, led by Melinda Wilson.
The launch of Protect Sydney's Water Alliance was held at NSW Parliament House last week.
Wayne Olling, secretary, said BDEG is opposed to coal seam gas extraction because of its effect on the environment.
"Among several threats is the impact on water supplies including flows to creeks and springs which take water to reservoirs," he said.
"We call on the government to think more of the people and the environment rather than of corporations and their lobbyists making money sending gas overseas."
No CSG Blacktown founder Melinda Wilson said the Zombie-a-Frack campaign need residents to join them in alerting people that they could become zombies if the reservoir's water were contaminated.
"We recently received confirmation that CSG drilling is going ahead near Prospect Reservoir," Ms Wilson said.
A new poll, conducted for the Nature Conservation Council of NSW and Lock The Gate, found 87 per cent of people support banning coal mining and coal seam gas (CSG) activities in catchment areas and within two kilometres of rivers and wetlands.
During CSG extraction, millions of litres of water are pumped from deep in the earth, threatening aquifers and polluting water.
NSW Health has called for a "comprehensive assessment of potential risks to human health" in relation to CSG drilling.