This document provides details for a federal solicitation to improve wastewater treatment facilities on the Zuni Indian Reservation. The Department of Health and Human Services Indian Health Service is seeking a contractor to renovate and expand an existing 32.6-acre, six cell lagoon facility into a 49-acre, five cell treatment system through a two-phase construction approach. The contractor will furnish all labor, materials, and equipment required for the project. This acquisition is set aside for Indian Small Business Economic Enterprises in accordance with the Buy Indian Act. The solicitation number is 75H70120R00029 and interested parties can find the full solicitation and associated documents attached.