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Post Falls approves amended warranty terms and service contract for new membrane filters at water reclamation plant
Summary
Council approved a contract and amended warranty terms with Wiggin (Wigan) Water Technologies for a $3M membrane filtration system, accepting reduced warranty lengths in exchange for continuing remote technical support and site visits after staff discovered the manufacturer’s warranty was backdated to shipment dates.
The Post Falls City Council on Nov. 18 approved a service contract and modified warranty arrangement with Wiggin Water Technologies for the membrane filtration portion of the city’s water reclamation tertiary treatment upgrade.
Public Works Director John Beacham told council the membrane modules have been in operation since March 31, 2025, but the manufacturer’s (DuPont, formerly Dow Chemical) warranty to the vendor was dated from shipment rather than the city’s start of operation. That production/shipment-based warranty start left a gap between the contract warranty the city expected and the warranty Wiggin could secure from the manufacturer.
Beacham summarized the city’s original contract requirement: a one-year full warranty followed by a six-year prorated warranty on the membrane modules —…
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