# Yuma Bonfire #RFB-27-014

Yuma, AZ Main Street Water Treatment Plant Filter System Upgrade III Solicitation

**Posted:** September 16, 2026
**Respond By:** October 20, 2026
**Identifier:** RFB-27-014
**NAICS:** 237110, 221310

The City of Yuma, Arizona is seeking contractors for Phase III of the Main Street Water Treatment Plant Filter System Upgrade.
- Government Buyer:
  - City of Yuma, Arizona
  - Main Street Water Treatment Plant
- Products & Services Requested:
  - Selective demolition of obsolete conduit, wiring, instrumentation, controls, process valves, flow meters, underdrain, and filter media
  - Furnishing and installing a new underdrain system compatible with air/water distribution
  - Placement of specified filter media
  - Installation of new process valves with actuators
  - Installation of turbidity meters for water quality monitoring
  - Installation of a backwash blower system including piping and foundations
  - Replacement and integration of power/conduit, PLC/HMI/SCADA systems, alarms, and interlocks
  - QA/QC, testing, and commissioning (including underdrain distribution, valve stroke, blower performance, turbidity calibration, filter run/backwash verification)
  - Training and delivery of operation & maintenance manuals
- Unique/Notable Requirements:
  - Contractors must maintain plant operations during construction by sequencing work filter-by-filter and using temporary isolation
  - Minimum one-year warranty required on installed equipment
  - Compliance with safety, environmental, and regulatory requirements
  - Deliverables include submittals, as-builts, O&M manuals, and training
- OEMs & Vendors:
  - No specific OEMs or vendors are mentioned in the solicitation
- All work must be performed while maintaining plant operations and ensuring quality assurance and regulatory compliance.

### Description

Phase III of the Main Street WTP Filter Rehabilitation & Upgrade involves selective demolition of obsolete components, installation of a new underdrain system compatible with air/water distribution, placement of specified media, and installation of new process valves with actuators, turbidity meters, and a backwash blower. The project includes replacing power/conduit and integrating PLC/HMI/SCADA systems, maintaining plant operations through filter-by-filter sequencing, and executing QA/QC, testing, and commissioning. Deliverables include submittals, as-builts, O&M manuals, training, and compliance with safety, environmental, and regulatory requirements, with a minimum one-year warranty on installed equipment.

[View original listing](https://yumaaz.bonfirehub.com/opportunities/252864)