Transition Towns Kiama will screen GasLand at Gerringong Town Hall on Friday, February 17 at 7pm to make residents aware of what it says is a largely unregulated industry.

Transition Towns member Carolyn Lee said most industries have to report to a governing body.

"But coal seam gas extractors have found a loophole so they can extract in an environmentally damaging way without recourse - there needs to be legislation at the state level," she said.

The documentary follows the story of filmmaker Josh Fox who investigates the industry after being offered $100,000 by a natural gas company to explore and drill on his property.

Among his discoveries were water capable of being lit on fire straight out of the sink, chronically ill residents with the same mysterious symptoms, pools of toxic waste killing cattle and vegetation, well blowouts and gas explosions.

"We want to bring awareness to the topic and remind people it's not too far from their backyards and garner support to prevent coal seam extraction in the Illawarra," Ms Lee said.

Wollongong City councillor and anti-coal seam gas campaigner Jill Merrin and CanWin (Climate Action Now Wingecarribee) convener Miles Lockhead will speak briefly after the film about current coal seam gas operations in the Illawarra.

Ss Peter and Paul Peace Environment and Social Justice Group will provide an organic supper.

The screening follows a resolution passed by Kiama Council in December to oppose all coal seam gas operations in water catchment areas and prime agricultural land.

Kiama Mayor Sandra McCarthy said the council was particularly concerned about the impact the industry could have on water quality.

"We'll also have information on display about coal seam gas mining presenting both viewpoints - all information is important for people to take the opportunity to form an opinion," she said.

Those attending the screening should arrive at 7pm for a 7.30pm start. Entry is a gold coin donation.