Click the link to read the article on the National Public Radio website (Pien Huang). Here’s an excerpt:
September 12, 2024
…in the past few years, Yorba Linda has picked up another distinction: It’s home to the nation’s largest per- and polyfluoroalkyl (PFAS) water treatment plant of its kind, according to the city.
“This December will be [three] years we’ve been running, and we’re the largest PFAS treatment plant using resin,” says J. Wayne Miller, former board president at the Yorba Linda Water District, for whom the plant is named.
The Yorba Linda PFAS treatment plant took over a long, narrow strip of the water district’s parking lot, not quite the length of a football field. A series of giant tanks sit atop a concrete platform. “Honestly, they look like large propane cylinders,” says Todd Colvin, chief water system operator for the district. Each tank looms about 10 feet tall and can hold around 4,500 gallons. There are 22 of them, arranged in a double row, painted pristine ivory white. The tanks are packed half-full with a kind of resin – special polymer beads – that pull PFAS out of the water. Every gallon of water pumped from the district’s wells now passes through a few of these tanks for treatment, before going to the homes and businesses of 80,000 people.
The Yorba Linda Water District built the largest PFAS water treatment plant of its kind because it had a big PFAS problem. In February 2020, the water district had to take all of its wells offline because they were drawing groundwater contaminated with PFAS…But where is all this PFAS coming from? In Orange County, one of the primary culprits appears to be the Santa Ana River Almost a hundred miles long, the Santa Ana River flows through mountains and canyons, the cities and suburbs of San Bernardino and Riverside. Along the way, it picks up PFAS. “We find it in some of just the natural runoff that goes into the river during the winter, during storms,” says Jason Dadakis, executive director of water quality and technical resources at the Orange County Water District. ”We also detect some PFAS coming out of the sewage treatment plants upstream.” There’s also the legacy of factories and military bases in the area.