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Santa Clarita Valley Water Agency (SCV Water) is the first water agency in California to use Purofine® PFA694EBF PFAS selective ion exchange resin from Purolite for PFAS treatment. This buffered resin allowed SCV Water to meet their strict chloride discharge limit as well as treat and remove PFAS to non-detect levels.
Addressing PFAS was SCV Water’s top priority after detecting PFAS in local wells. SCV Water operates a service area of approximately 195 square miles serving over 273,000 people in northern Los Angeles County. When the State Water Resources Control Board – Division of Drinking Water (DDW) decided to lower its response level guidelines to 10 parts per trillion (ppt) for perfluorooctanoic acid (PFOA) and 40 parts per trillion (ppt) for perfluorooctanesulfonic acid (PFOS), two chemicals in a family of per- and polyfluoroalkyl substances (PFAS), SCV Water moved quickly. First, they voluntarily shut down nearly half their wells, and second, they expedited design and construction of a PFAS treatment facility.
SCV Water hired the consulting firm, Kennedy Jenks, to design a treatment plant. They evaluated various options and proposed the most cost-effective and efficient process to reduce PFOS and PFOA to non-detect levels – PFAS-selective ion exchange resin.
Resin was chosen over granular activated carbon (GAC) for many reasons:
By the summer of 2020, SCV Water installed the first treatment system on three of its wells which included using Purolite’s PFAS-selective ion exchange resin PFA694E.
With the new system running, SCV Water is returning 6000 gallons per minute to service, the amount used by about 5,000 families in a year. The system is an investment in the Agency’s long-term water supply, providing safe, high quality water to its customers.