This Government Contract opportunity from California was posted on August 10, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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On-Site GAC Loading and Changeout Services

Closed

State & Local

Submission Closed09/03/2026, 10:00:00 PM UTC

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

Active Opportunities Like This One

NAICS: 221320

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Sioux City Wastewater Treatment Plant Facility Plan - Phase 1 Improvements Project

Solicitation # sioux-city-wastewater-treatment-plant-facility-plan-phase-1-improvements-project

The Sioux City Wastewater Treatment Plant Facility Plan Phase 1 Improvements Project, managed by Rice Lake Construction Group, involves extensive infrastructure upgrades and modernization in Iowa. Key mechanical and process improvements include the replacement of preliminary treatment equipment, primary clarifiers, and the RAS pump station, alongside the rehabilitation of aeration tanks and the conversion of an anaerobic digester for sludge storage. The project also features the construction of a new secondary control building, plant-wide odor control systems, new standby emergency power generators, and comprehensive SCADA system upgrades to ensure operational efficiency and safety compliance with NFPA 820 standards. The scope of work encompasses significant demolition of unused structures and buildings, paired with wide-ranging civil and structural improvements. Required materials and services span hazardous material abatement, concrete and masonry work, HVAC, electrical systems, and specialized water and wastewater equipment. This solicitation, categorized under NAICS code 221320, requires responses by October 28, 2026, and includes various site-wide utilities and process interconnection tasks to modernize the facility's overall functionality.

Rice Lake Construction Group

POSTED

DEADLINE

Y--GRCA 257282 - Replace Wastewater Plant at South Ri

Solicitation # 140P2026R0101

Solicitation 140P2026R0101 is an unrestricted full and open competition Invitation for Bid issued by the National Park Service, DSC Contracting Services Division, for the replacement of the South Rim Wastewater Treatment Plant at Grand Canyon National Park, Arizona. The project involves the construction of a GD Membrane Bio-Reactor wastewater treatment plant, including new treatment facilities, administrative and support buildings, and process systems. The scope of work encompasses complete demolition and removal of existing infrastructure, site preparation, grading, paving, fencing, and improvements to the facility access road. The project is estimated to exceed 100 million dollars, with a period of performance from February 1, 2027, to February 1, 2030, and a revised assumed Notice to Proceed date of April 1, 2027. The government will utilize a multi-factor, best-value tradeoff process for award, evaluating technical experience, technical approach, key personnel experience, and price. Key requirements include the provision of performance and payment bonds, adherence to union prevailing wage rates, and a 12-month operational support period following construction. Technical specifications emphasize strict cybersecurity hygiene for SCADA/MES equipment, full government rights to supplied software and source code, and compliance with ADA standards. Proposals must be submitted electronically in separate volumes, with specific evaluations focusing on the contractor's ability to manage complex wastewater plant commissioning and regulatory approvals.

Dsc Contracting Services Division

POSTED

DEADLINE

RFP 9170 Water Treatment Program

Solicitation # 49476

Bowling Green State University is seeking proposals from qualified vendors to implement a comprehensive water treatment program for its Campus Operations department. This solicitation, identified as RFP 9170, is managed by the university's purchasing department and is open to providers capable of meeting the technical requirements of the program. Interested parties must submit all proposals and inquiries exclusively through the Bid Express platform by the deadline of October 30, 2026, at 4:00 PM. All communications must be directed to the designated purchasing contact, Jacob Konecny, as contacting other university personnel regarding this bid may result in the disqualification of the proposal.

Bowling Green State University - Purchasing

POSTED

DEADLINE

Process Equipment SupplierThis subcontract opportunity with Garney Pacific, Inc. is for a process equipment supplier to support wastewater treatment plant projects for the City of Redlands. The selected supplier will be responsible for providing and delivering specialized equipment, including pumps, chemical feed systems, filters, GAC, and HDPE tanks. The contract is set aside for various small business categories, including SBA certified Veteran, Service-Disabled Veteran, Women-Owned, and HUBZone small businesses. Key compliance requirements include the use of union labor and the provision of a 100% Payment and Performance Bond. Responses are due by November 12, 2026.

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DEADLINE

Water Treatment Cartridge Filter SupplierThis subcontract agreement establishes a partnership for the supply of NSF-61 certified melt-blown polypropylene pleated cartridge filters intended for sediment removal on City of Tucson Water Department projects. The supplier is responsible for providing filters that meet specific technical requirements, including a 6 inch outer diameter, 60 inch length, 5 micron absolute retention, and 75 square feet of surface area, ensuring full compatibility with FILTREK housing and the provision of all necessary manufacturers data sheets. The contract mandates the delivery of 408 cartridges annually, distributed in quarterly batches of 102 units. This procurement falls under NAICS code 221320 and is managed through the Arizona Water Department, with a response deadline set for October 30, 2026.

POSTED

DEADLINE

Waste Water Treatment Plant Operations and MaintenanceThis subcontract for Waste Water Treatment Plant Operations and Maintenance involves the daily operation and preventive maintenance of Department of the Air Force facility projects at Lajes Field in Praia da Vitoria, Portugal. The scope of work includes managing an 800K GPD activated sludge treatment system, 14 lift stations, 8 oil-water separators, and 2 grease traps. The contractor is responsible for implementing a comprehensive 52-week preventive maintenance plan and providing continuous operational status updates and detailed maintenance logs. To ensure technical compliance, the contract requires a Lead Operator possessing a Level II WPI Certification and a minimum of three years of on-site experience. This opportunity is categorized under NAICS code 221320 and is associated with the Department of Defense. Interested parties must submit their responses by the deadline of November 23, 2026.

POSTED

DEADLINE

Waste Water Treatment Plant Services

Solicitation # FA448627Q0002

Solicitation FA448627Q0002 is a Request for Quotation issued by the Department of the Air Force for Waste Water Treatment Plant Services at Lajes Field in Praia da Vitoria, Azores, Portugal. The contractor will be responsible for the operation and maintenance of a waste water treatment plant with a capacity of 800,000 gallons per day, as well as the associated lift station, oil-water separator, and grease traps. Key requirements include providing a Lead Operator with a Level II or higher WPI Certification and at least three years of experience, implementing a 52-week preventive maintenance plan, and ensuring compliance with ISO/IEC 17025 laboratory standards and Portuguese decree law 183/2009 for waste landfills. The scope also encompasses corrosion control, painting, and the management of hazardous materials. The government intends to award a single Firm-Fixed-Price contract with a total duration not to exceed 66 months, consisting of a base period and four option periods. This is an unrestricted acquisition, and proposals must be submitted electronically by November 23, 2026, at 14:00 Azores Time. Offers are evaluated through a three-step sequential process: an administrative compliance review, a technical acceptability evaluation based on experience, approach, and a quality control plan, and finally a price evaluation in Euro currency. Award is contingent upon the availability of funds. Payments will be processed electronically via the Wide Area WorkFlow system.

POSTED

DEADLINE

DCDO Septic Tank and Sewage Treatment Maintenance

Solicitation # FA527027QB006

The United States Air Force 18th Contracting Squadron is soliciting quotations for a single-award, firm-fixed-price requirements contract to provide septic tank and sewage treatment plant maintenance services for the Defense Communications Detachment Okinawa (DCDO) in Okinawa, Japan. The contract encompasses a base period from December 1, 2026, to November 30, 2027, with four subsequent option periods extending the total performance through November 30, 2031. The scope of work includes implementing a Preventive Maintenance Inspection Service program, performing general maintenance and repairs, and responding to routine service calls within 24 hours. All maintenance personnel must be certified plant operators approved by the Government of Japan Ministry of Public Health and Welfare. Award will be granted to the responsible offeror whose proposal is determined to be the most advantageous to the government, with price serving as the primary evaluation factor. To be considered responsible, quoters must submit current Industrial Waste Disposal or Collection and Transportation Business licenses. Deliverables include quarterly work reports and personnel access lists submitted one week prior to starting work. The contractor must also adhere to strict marking and labeling standards for any delivered items per MIL-STD-130 and MIL-STD-129. Quotations must be submitted electronically by October 26, 2026, and must include a detailed pricing breakdown via the provided Price Exhibit.

POSTED

DEADLINE

Septic and Holding Tank Pumping, Hauling, and Disposal ServicesThis subcontract involves providing septic and holding tank pumping, hauling, and disposal services for prime contractors working on California Department of Parks and Recreation projects. The selected provider is responsible for pumping tanks to the bottom, removing all garbage and debris, and transporting waste to authorized disposal sites. To ensure operational readiness, the contractor must maintain a business location within Humboldt or Mendocino County and possess the necessary vacuum trucks to complete the work. Key performance requirements include a strict two-hour on-call response time for emergency situations and the delivery of fully pumped tanks with verified disposal documentation. This opportunity is categorized under NAICS code 221320, with the primary place of performance located in Humboldt. Interested parties must submit their responses by October 22, 2026.

California Department of Parks & Recreation

POSTED

DEADLINE

ZetaLyte 294CH Dry Polymer SupplierThis subcontract agreement involves the procurement and delivery of ZetaLyte 294CH dry polymer for the Town of Lee Wastewater Treatment Facility. The selected supplier is responsible for sourcing the specific brand and grade of polymer and managing all transportation and logistics to ensure the material is delivered to the facility for use in a rotary drum sludge thickener. The project is managed under the agency LEESEWER - WASTEWATER in Massachusetts, with performance taking place in Lee, Massachusetts. The solicitation was posted on October 7, 2026, with a response deadline of October 28, 2026. The contract falls under NAICS code 221320, focusing on the specialized supply of chemical agents necessary for wastewater treatment operations.

LEESEWER - WASTEWATER

POSTED

13 days ago

DEADLINE

in 9 days

NAICS: 221320

Sewer Inspection & CleaningThis subcontract opportunity with SAK Construction involves providing specialized cleaning and CCTV inspection services for sanitary sewers on Metropolitan Council projects in Minnesota. The selected contractor will be responsible for executing high-pressure cleaning of sewer lines and utilizing robotic CCTV cameras to identify defects, ultimately delivering cleaned lines along with comprehensive inspection videos and reports. The solicitation is open to various small business designations, including SBA certified Veteran Owned, Women-Owned, and HUBZone Small Businesses, as well as Disadvantaged Business Enterprises. Interested parties must submit their responses by November 3, 2026, for this project categorized under NAICS code 221320.

POSTED

DEADLINE

Sludge Collection System SupplierThis subcontract involves the design, supply, and installation of a hose-less sludge removal system for water treatment projects managed by the City of Harrisonburg in Virginia. The scope of work includes the fabrication of critical components such as collector assemblies, sludge exit pipes, electric drive assemblies, drive cables, and cable pulleys. Additionally, the supplier is responsible for providing a fully automatic control system, which encompasses both the PLC and panel design. To ensure safety and compliance, all parts coming into contact with potable water must meet NSF ANSI Standard 61 certification. The project is categorized under NAICS code 221320, with a response deadline set for December 10, 2026. The selected supplier will work with prime contractors to deliver a fully operational sludge removal and automatic control system within the city of Harrisonburg.

City of Harrisonburg

POSTED

13 days ago

DEADLINE

in about 2 months

AI Contract Overview

The County of San Luis Obispo in California is seeking a subcontractor for On-Site GAC Loading and Changeout Services to be performed in Cayucos, California. The scope of work involves the physical removal of spent granular activated carbon and the loading of virgin media into treatment units, with a strict requirement for confined space entry and adherence to all safety compliance standards. This opportunity is categorized under NAICS code 221320. Interested parties must submit their responses by the deadline of September 3, 2026. Further details regarding the solicitation can be accessed through the provided BidAmerica portal.