Energy & Environmental Services, Inc. announced that it has received certification from the Environmental Protection Agency to produce registered biocides at its plant in Edmond, Oklahoma. The manufacturing, creation, and production of biocides are regulated by the EPA. The company's certification allows it to manufacture registered biocides, which it can sell to end users throughout multiple industries, including the oil and gas industry. Biocides are frequently used in the oil and gas industry to treat frac water in order to combat well contamination.