Operation and Maintenance of Wahiawa Irrigation System

The State of Hawaii's Agribusiness Development Corporation (ADC) is requesting bids for operation and maintenance of the Wahiawa Irrigation System on Oahu, with bids due August 20, 2026 at 2:00 p.m., a mandatory pre-bid meeting and site visit on August 3, 2026 at 10:00 a.m., and contract commencement on September 1, 2026.

The scope encompasses the irrigation system from Lake Wilson to the North Shore, including daily visual inspection of three regulated dams, maintenance of dam water levels as directed by ADC, master meter reading and record preparation, monthly meter readings for billing, leak repairs, line flushing, valve and filter maintenance, security maintenance, weed control, ditch line desilting, backflow testing, equipment repainting and repairs, and general area cleanup. The system extends to 22 customer water meter points of delivery throughout Wahiawa.

The estimated base-year contract value is $350,000 plus a $100,000 contingency. The base contract runs September 1, 2026 through August 31, 2027, with options to extend for two consecutive years (Option Year One: September 1, 2027–August 31, 2028; Option Year Two: September 1, 2028–August 31, 2029). Award is subject to funding availability.

Bidders must hold a valid Hawaii State contractor's license, classification C-37b, and must have an employee or subcontractor with a minimum of 10 years of experience operating and maintaining high-hazard reservoirs and open-ditch irrigation systems. An on-island project manager must be available during working hours plus two hours after working hours. The contractor bears responsibility for replacement, repair, and payment of any ADC property damaged due to contractor negligence.

Contracts exceeding $25,000 are subject to Hawaii prevailing-wage requirements under Hawaii Revised Statutes Section 103-55. Bidders must provide wage certificates certifying compliance with worker compensation, unemployment compensation, wage payment, and safety laws. Hawaii General Excise Tax applies to out-of-state offerors with business presence in Hawaii. Bids are submitted electronically via HIePRO. Contact Ken Nakamoto at (808) 586-0087 or Ken.T.Nakamoto@hawaii.gov with inquiries.