Water and wastewater system operators recognize that as science uncovers new and increasingly complex threats to drinking water and the environment, government agencies respond with additional rules and regulations. One of the most recent threats identified is a group of compounds known as PFAS.
PFAS, or per- and polyfluoroalkyl substances, are synthetic chemicals used in a wide range of consumer products and industrial applications. They are known for their persistence in the environment and are often referred to as “forever chemicals” because they do not break down easily. Scientific studies have shown that exposure to certain PFAS compounds may be linked to harmful health effects in both humans and animals. There is broad consensus among scientists, government agencies, and the water industry that PFAS must be removed from drinking water. However, the extent of PFAS contamination remains unclear.
The first step in addressing any issue is understanding its scope. To assess how widespread PFAS contamination is in Oklahoma, the State Department of Environmental Quality (DEQ) has partnered with the Oklahoma Rural Water Association (ORWA) to offer laboratory testing to small water systems across the state. This initiative focuses on detecting six major types of PFAS compounds in drinking water. The testing is provided at no cost to participating systems and is conducted by staff specially trained in PFAS sampling and analysis techniques to minimize errors. The goal is to gain a clearer picture of PFAS impacts on water systems and to connect affected systems with available infrastructure funding for treatment solutions.
Since March 2025, ORWA and DEQ have completed sampling at more than 200 small water systems statewide. Fortunately, only a few instances of contamination have been found. Sampling will continue through the remainder of 2025 and into 2026, with the hope of continued non-detection. For more information about the sampling program or to request participation, please contact the DEQ Capacity Development Section at: https://oklahoma.gov/deq/divisions/water-quality/public-water-supply/capacity-development.htm