India, Nov. 13 -- A 2025 study published in Water Environment Research found that per- and polyfluoroalkyl substance levels in the Rio Grande flowing through Albuquerque, New Mexico, increased tenfold. The average concentration rose from 4 to 46 nanograms per liter (ng/L), an approximately 11.5-fold increase.

Kimberly R. Beisner, a U.S. Geological Survey researcher, analyzed 28 PFAS in eight major rivers. Samples were collected between 2020 and 2024. The study detected 13 PFAS compounds at concentrations ranging from below laboratory detection limits to about 156 ng/L. The survey involved sampling in the Rio Grande, Pecos, San Juan, Animas, Canadian, Gila, Rio Chama, and Rio Puerco rivers. Perfluorobutanesulfonic acid (PFBS) was the most...