[Deaf Smith]

Enough that the waste water is toxic. Usually disposed by pumping into under ground salt domes.

Each company's frac fluid is proprietary information. Even the EPA does know what is used.

[marktwain]

Toxic by Deep Green definition, not by any testing I have read.

If the EPA does not know, they must not have as good of laboratories as I thought.

The EPA has been overhyping toxicity for decades.