https://science.howstuffworks.com/environmental/energy/pros-cons-shale-gas.htm

>First of all, it's 5,000 feet below ground. To get a hold of it requires pumping hydraulic fracturing (fracking) fluids, which could contain hazardous chemicals, into the ground along with water and sand at high pressures. The result is "a super-salty brine, prone to bacterial growth, and potentially contaminated with heavy metals," the National Geographic wrote in its series on shale gas.
Furthermore, the large amount of water needed to drill for shale can affect water availability for other uses, potentially impacting aquatic habitats. As a byproduct, fracking produces millions of gallons of wastewater. The amount can inundate under-equipped treatment plants. In the past, improperly treated wastewater has been found discharged into river basins, polluting the surrounding environment. The potential also exists for fracking fluids to seep into aquifers if a well casing fails, posing a risk to ground water supplies.
The negatives don't end there. Drilling can disrupt lives, including heightened noise levels aided by the transportation of materials, construction of facilities and drilling process itself; deterioration of air quality with the rise of diesel fumes; and implications of potentially destroying communities' access to clean water, including additional costs and efforts to transport and store water sourced from elsewhere.

You can't avoid the negatives with shale gas mining.