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  5. ›CENTRALIZED GAC TREATMENT NAPILI AND HONOKAHUA WELLFIELD…

County of Maui·Hawaii

CENTRALIZED GAC TREATMENT NAPILI AND HONOKAHUA WELLFIELD NAPILI, MAUI, HAWAII

Closes 2/17/2026$5M – $15MRequest for ProposalLogin required
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Description

The County of Maui, Department of Water Supply, is soliciting proposals for the design and construction of a centralized granular activated carbon (GAC) treatment system for the Napili and Honokahua wellfields. The project includes replacing the existing GAC vessel and expanding the system to accommodate groundwater from three existing wells. The scope of work includes installation of a new GAC filtration system, water lines, and appurtenances, as well as ensuring compliance with current engineering standards and regulations. The contract will be for a firm, fixed price, lump sum design-build contract. • The project is funded by the Department of Water Supply Capital Revolving Fund and the State Department of Health-Safe Drinking Water Branch (DOH-SDWB) State Revolving Fund (SRF) Loan. • The project must meet American Iron and Steel (AIS) and Build America Buy America (BABA) certification requirements. • The project must adhere to the State Historic Preservation Department (SHPD) environment review process, including the federal 106 process review. • The contractor must obtain all necessary permits and approvals for the performance of the contract. • The contractor must comply with all applicable federal, state, and county laws, ordinances, codes, rules, and regulations.

Attached files

The solicitation documents live at the source — open the bid source above to download them.

Contact

Ashley DeCastro(Procurement Contact)

[email protected]

(808) 270-7680

Key dates

Opened
1/9/2026
Pre-bid meeting
1/27/2026
Site visit
1/27/2026
Closes
2/17/2026
Projected award
4/3/2026

Last updated

Details

Type
Request for Proposal
Industry
Civil Engineering
NAICS
237110
Solicitation №
DWS CIP JOB NO. 25-04

Budget estimate

$5,000,000 – $15,000,000

The budget for this project is estimated to be in the range of $5 million to $15 million, based on the scope of work and the fact that it is a design-build contract for a water treatment system. The actual budget will depend on the specific proposal submitted by the contractor and the final contract price. Factors that may influence the budget include the complexity of the project, the materials and labor required, and the contractor's experience and reputation.

AI estimate from the solicitation

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