Unofficial Notice of Invitation to Bid (NIB)

West Basin Municipal Water District is seeking bids from qualified and interested contractors for the following project titled, SUPPLY OF REVERSE OSMOSIS (RO) MEMBRANES FOR THE JUANITA MILLENDER-MCDONALD CARSON REGIONAL WATER RECYCLING PLANT, identified under Solicitation ID: -. Work is to be performed near 17140 Avalon Blvd, Carson, CA 90746, USA in Los Angeles County.

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General Project Description

The project involves the supply and delivery of reverse osmosis (RO) membrane elements, along with related spare parts (inter-connectors, end-cap adapters, O-rings, and brine seals), for the Juanita Millender-McDonald Carson Regional Water Recycling Plant (JMMCRWRP). The scope includes providing technical data, on-site representation during membrane installation, and a system performance warranty for the new membrane elements, which are intended for replacement in two of the plant's four RO trains.

General Bid Items

Quantity: 852 Unit: EA Work Item: Supply reverse osmosis membrane elements, Specifications: 8 x 40 inches, 400 square feet active membrane area, spiral wound, compatible with Advanced Structures Codeline Model 80A45, 6-element pressure vessels.
Quantity: 1 Unit: LOT Work Item: Supply spare parts, Specifications: Includes 10 u-cup brine seals per train, 20 O-rings for element interconnectors per train, 264 O-rings for seal between pressure vessel end adapters per train, 132 O-rings for seal between pressure vessel end adapters and end cap per train, 10 element interconnectors per train, 132 pressure vessel end adapters per train, and 20 vessel head seals (8” nominal diameter) per train.
Quantity: 1 Unit: LOT Work Item: Sales Tax, Specifications: 9.75%.
Quantity: 1 Unit: LOT Work Item: Freight.

NAICS Classification

NAICS 423850 – Service Establishment Equipment and Supplies Merchant Wholesalers (Supplying reverse osmosis membrane elements and spare parts for a water recycling plant.), NAICS 333999 – All Other Miscellaneous General Purpose Machinery Manufacturing (Manufacturing reverse osmosis membrane elements, if the supplier is the manufacturer.)

Records and Due Date

This bid opportunity was entered into BidAmerica on February 12, 2026, and was last updated on February 18, 2026. All bids and/or proposals are due on February 26, 2026.

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Legal Disclaimer

All bidders are responsible for reviewing and verifying all official bid documentation directly from the issuing agency. BidAmerica aggregates public bid information for advertisement purposes for contractors and government agencies convenience. This Notice of Invitation to Bid is for reference purposes only and is not an official or complete representation of any documents issued by West Basin Municipal Water District. BidAmerica does not guarantee the accuracy, completeness, or timeliness of any information displayed and shall not be held liable for any errors, omissions, misinterpretations, or damages resulting from reliance on this summary. Contractors must obtain all official information—including plans, specifications, addenda, deadlines, submission requirements, qualifications, and bidding conditions—directly from West Basin Municipal Water District prior to bidding.