WWTP Aeration & UV System Upgrades
Open State & local contract opportunity Posted
- Solicitation number
- 4211788
- State
- Washington
- Responses due
Opportunity facts
- Jurisdiction
- Point of contact
Opportunity details come from constructionbidsource.com. Updated .
About this opportunity
The City of Mossyrock, Washington is soliciting bids for upgrades to its wastewater treatment plant aeration and ultraviolet disinfection systems, with bids due December 3, 2026. The notice lists Kittitas County (FIPS 53037) as the jurisdiction.
The scope requires removing existing blowers, aeration diffusers, UV equipment, and related components, then installing two new screw blowers, fine-bubble aeration diffusers, piping, valves, dissolved oxygen monitoring equipment, and a new UV disinfection system with lamps, sensors, and controls. Related work includes an automatic wastewater sampler, electrical and instrumentation connections, new concrete, a pre-engineered canopy protecting the UV equipment, and new equipment pads, controls, and conduits. The awardee must test all new equipment to confirm the upgraded systems operate properly. The notice was posted November 11, 2026, and the bid notice PDF is attached.
Opportunity text
Project Description: This Project upgrades the City of Mossyrock's existing Wastewater Treatment Plant (WWTP) aeration and ultraviolet (UV) disinfection systems. The improvements will modernize the treatment plant, improve aeration and wastewater disinfection, and increase the reliability and efficiency of the City's wastewater treatment process. Work will include removing existing blowers, aeration diffusers, UV equipment, and related components. Site improvements include construction of new concrete, installation of a pre-engineered canopy to protect the UV Equipment, installation of new equipment pads and associated controls and conduits. New equipment to be installed: two (2) new screw blowers, fine-bubble aeration diffusers, piping, valves, dissolved oxygen monitoring equipment, a new UV disinfectant system with lamps, sensors and controls. An automatic wastewater sampler, electrical and instrumentation connections, and coordinating equipment. Installation will include testing of all new equipment to ensure the upgraded systems operate properly.
Files
| File | Type | Posted |
|---|---|---|
| Bid Notice-WWTP Aeration _ UV System Upgrades.pdf |
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