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Graeme Farmer lived in a cottage just north of the Jersey airport training ground in the mid-1990s and drank water from a private borehole.

Locals in Jersey have been battling for more help for decades including Lisa Cabot, who grew up in the affected area from the mid-1980s for nine years and drank from private borehole water.

Tandridge District Council's leader Catherine Sayer said remote sensing called LiDAR would be used to create 3D maps instead of borehole testing.

Once identified, wells can be properly "plugged and abandoned" by filling the borehole with cement, keeping oil out of water and methane out of the atmosphere.

Earlier this month, the Health and Safety Executive said the borehole for the heat pump had been filled with cement for a second time, to make it gas-tight.