According to the book "Poison Spring: Secret History of Pollution and EPA," GMOs are primarily developed in order to genetically engineer crops that are able to withstand chemical herbicides and pesticides: "Glyphosate is a powerful driver of genetic engineering. Its creator, Monsanto, has bioengineered 'Roundup Ready' soybeans, corn and other crops to resist Roundup's killing power" (p. 205)... "All genetically modified crops harm the natural world and human health, in large part because they (by definition) invite and encourage the spraying of toxic pesticides" (p. 212). Quoted from E.G. Vallianatos (2014) Poison Spring: Secret History of Pollution and EPA https://www.amazon.com/Poison-Spring-Secret-History-Pollutio...

I'm a bit skeptical of what the EPA says, because it has been documented to suffer from regulatory capture.

http://www.amazon.com/Poison-Spring-Secret-History-Pollution...

But lets assume the EPA is doing its job. At minimum, there needs to be more inspectors - currently there is a huge backlog where high-risk wells are not being inspected. So this problem will just keep getting worse.

http://www.foreffectivegov.org/blog/massive-fracking-federal...

Also, just a few weeks ago from the NYT:

http://www.nytimes.com/2015/05/05/science/earth/fracking-che...