Oklahoma state regulators have taken a hard look at the practice of disposing of wastewater underground, and how it affects earthquakes.
By Michael D. Regan
The Environmental Protection Agency took responsibility Friday for a massive wastewater spill that contaminated a Colorado river Wednesday, and warned locals to avoid the polluted waters.
By Daniel Costa-Roberts
Methadone reacts chemically with a disinfectant used at a third of U.S. wastewater treatment plants to create a carcinogen.
By Nsikan Akpan
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