PFAS Ion Exchange Treatment System

The La Habra Heights County Water District is soliciting proposals for the procurement of a single pass ion exchange (IX) equipment system and treatment resin media to remove PFAS, including PFOA and PFOS, from groundwater. The system will be installed at the Well 10 and 11 site in Whittier, California, to treat water from those wells and other offsite sources for use as potable water. The required equipment consists of three sets of lead/lag systems featuring paired 12-foot diameter pressure vessels and integral valve manifolds, capable of treating up to 6,000 gpm on a continuous basis. The system must utilize pre-rinsed PFAS selective resin media, such as Purolite PFA694E or an approved equivalent, and must be approved by the California Division of Drinking Water. A primary performance goal is to reduce PFAS concentrations in effluent groundwater to non-detect levels, defined as less than 1 microgram per liter per EPA laboratory testing Method 533. Additionally, the supplier must provide anchoring designs and structural calculations for the vessels and valve tree support, certified by a Professional Engineer registered in the State of California. Proposals are due by November 25, 2026, and should be submitted via email to General Manager Joe Matthews.