How to bid on Kealakehe Wastewater Plant upgrades for the County of Hawaii

What the County is buying

The County of Hawaiʻi is seeking proposals to upgrade the Kealakehe Wastewater Treatment Plant so it can consistently and reliably produce treated wastewater that meets R-1 recycled water quality standards and applicable regulations.

This opportunity may interest firms with experience in wastewater treatment and recycled water facilities. The solicitation refers to the Hawaii Department of Health’s Reuse Guidelines, Volume 1: Recycled Water Facilities, and HAR §11-62-27.

Deadline and key dates

The opportunity was published October 2, 2026. Proposals are due November 2, 2026, at 7:00 PM ET.

Submit your response through OpenGov Procurement before the deadline. Check the project page for any addenda or updates that may affect your response.

Who this opportunity suits

This RFP is relevant to firms that work on wastewater treatment plant upgrades, treatment processes, or recycled water facilities. Vendors should assess whether their experience can address the goal of producing R-1 recycled water that meets the stated standards and regulations.

How to access and respond

Open the opportunity on OpenGov Procurement using the “View original source” access step. The portal may show a brief “just a moment” security check the first time; wait for it to finish and the project page to load.

Sign in or create a free vendor account to download plans, ask questions, join the planholders list, and submit your response. Addenda notices come through OpenGov.

Prepare a clear, compliant proposal

Review the project materials and applicable R-1 standards carefully. Use the portal’s question process to clarify anything you do not understand, and monitor OpenGov for addenda so your response reflects the latest information.

Explain clearly how your proposed approach addresses reliable treatment and the stated quality and regulatory goals. Check your response against the solicitation’s instructions, allow time to upload it, and confirm submission before the deadline.