Mealey's (August 1, 2017, 10:28 AM EDT) -- SEATTLE — A federal judge in Washington on July 31 denied a motion to dismiss a couple’s lawsuit against the manufacturer of a water filtration system that leaked in their home and allowed them to amend their complaint to add two other companies involved in the manufacturing of the product after finding that they sufficiently stated claims under the Washington Products Liability Act (WPLA) (Larry Frisvold, et al. v. Pentair Filtration Solutions LLC, et al., No. C17-136-RSL, W.D. Wash., 2017 U.S. Dist. LEXIS 119939)....