California

Statistics
Year Fracing Began: 
1970(s)
Types of Wells Fraced: 
Natural Gas
Types of Wells Fraced: 
Oil
Number of Wells Fraced Annually: 
274
Number of Wells Fraced Total: 
16,748*
Percentage of Wells Fraced: 
0.03%
Harm to Groundwater: 
None
(updated 7/12/2016)

Statistics are estimates provided by the states