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Government contracts for plumbers in Washington

A snapshot of open federal, state, and local opportunities in Washington, updated daily. To search them and get daily matches for your business, sign up free.

15
Open contracts
13
Added last 30 days

About plumbers contracts in Washington

Plumbers contracts in Washington typically cover backflow-preventer testing, water-main repair, fixture replacement at federal buildings, sewer-line work at correctional facilities, and on-call plumbing IDIQs. Federal posts in this category fall under NAICS 238220 (Plumbing, Heating, and Air-Conditioning Contractors), and the bulk of the work flows to the Army Corps of Engineers, the Federal Bureau of Prisons, and GSA. Small-business set-asides are common because most jobs sit well below the simplified acquisition threshold.

Washington currently has 15 open plumbers contracts in our database, with 13 added in the last 30 days. That's a steady cadence — enough flow to make automated alerting worthwhile rather than manual portal-checking. The most active buyers are King County (4 open posts) and DEPT OF THE ARMY (3), with the rest spread across other federal civilian agencies, DoD components, and state and local departments active in Washington.

Beyond federal opportunities, much of the plumbers work in Washington is posted through Washington's Electronic Business Solution (WEBS), with recurring buyers including WSDOT, the University of Washington / Washington State University, and Sound Transit. Washington's Office of Minority and Women's Business Enterprises (OMWBE) certification is the gate for most diversity-set-aside spend at the state level. ContractRadar pulls federal postings from SAM.gov alongside state and local feeds so a plumbing contractor doesn't have to monitor each portal manually.

Top matching contracts in Washington

WA

Water and Wastewater Treatment

The purpose of this procurement is to obtain the services of one Contractor to operate and maintain the environmental water management system for the Washington State Fire Training Academy. The goal i…

Performance: WADue Sep 28, 2026Posted Jul 25, 2026
Solicitation #: WSP-RFQQ-WWT3
SUB

Harrington Wastewater Treatment Plant Upgrades

PCI requests pricing for the following scopes: Aggregate, electrical, dewatering, concrete, misc. metals, plumbing systems, etc. Link to Bid Documents:

Performance: WADue Sep 15, 2026Posted Aug 28, 2026
Set-Aside: SBA · SDB · WOSB · HZC · VSA · SDVOSBS ·…NAICS Code: 237110Buyer: Prospect Construction, Inc.
FED

Lower Monumental PH HVAC System Upgrade

OVERVIEW: The work is located at the Lower Monumental Dam Powerhouse, Kahlotus, Washington. This solicitation is being issued as a Lowest Price Technically Acceptable (LPTA) Request for Proposal (RFP)…

DEPT OF THE ARMYPerformance: WADue Sep 22, 2026Posted Sep 2, 2026
NAICS Code: 238220PSC Code: Y1KASolicitation Type: SolicitationDivision: US ARMY ENGINEER DISTRICT WALLA WAL+2
FED

Lower Monumental PH HVAC System Upgrade

OVERVIEW: The work is located at the Lower Monumental Dam Powerhouse, Kahlotus, Washington. This solicitation is being issued as a Lowest Price Technically Acceptable (LPTA) Request for Proposal (RFP)…

DEPT OF THE ARMYPerformance: WADue Sep 22, 2026Posted Aug 21, 2026
NAICS Code: 238220PSC Code: Y1KASolicitation Type: SolicitationDivision: US ARMY ENGINEER DISTRICT WALLA WAL+2
FED

HVAC Troubleshooting, Repair, and Maintenance Services (Blanket Purchase Agreement)

The US Army Corps of Engineers, Walla Walla District is seeking small business sources for HVAC Troubleshooting, Repair, and Maintenance Services (Blanket Purchase Agreement). The work is located with…

DEPT OF THE ARMYPerformance: WADue Sep 18, 2026Posted Sep 4, 2026
NAICS Code: 238220PSC Code: J041Solicitation Type: Sources SoughtDivision: US ARMY ENGINEER DISTRICT WALLA WAL+2
KNG

Work Order Engineering Services for Solid Waste Landfill Systems

The purpose of this contract is to provide engineering and related services on a work order basis for King County Department of Natural Resources and Parks, Solid Waste Division (“County”). The exact …

King CountyPerformance: WADue Sep 15, 2026Posted Aug 17, 2026
Solicitation Type: A&E Solicitation
WA

ERO Mechanical Maintenance Services

The Department of Ecology is seeking a contractor to continue a preventive and corrective mechanical maintenance program, upgrades and new works for HVAC equipment and related plumbing and subsystems …

Performance: WADue Oct 2, 2026Posted Aug 18, 2026
Solicitation #: IFB 2622 ADM
FED

Three Rivers RS Bldg# 2017 HVAC Replacement

This project consists of removing existing electric single packaged vertical unit (SPVU) and legally dispose. Provide and install similar new electric 4-ton SPVU (minimum 11 EER/3.3 COP) with defrost …

FOREST SERVICEPerformance: WAPosted Aug 12, 2026
Set-Aside: SBANAICS Code: 238220PSC Code: J045Solicitation Type: Presolicitation+3
WA

HVAC PREVENTATIVE MAINTENANCE REPAIRS AND RELATED SERVICES

UW Medicine is seeking proposals from qualified and experienced Bidders to establish a pool of qualified vendors to provide heating, ventilation and air conditioning (HVAC), preventative maintenance, …

Performance: WADue Sep 11, 2026Posted Aug 6, 2026
Solicitation #: UWM 1239699-MB
KNG

Heavy Civil GC/CM Services for STP Treatment and Electrical Improvements (TEI)

The Heavy Civil GC/CM Project includes preconstruction and construction services for the South Treatment Plant (STP) Treatment and Electrical Improvements (TEI) Project. The Project is intended to pro…

King CountyPerformance: WADue Oct 13, 2026Posted Aug 19, 2026
Solicitation Type: Alternative Procurements
KNG

Work Order Survey & Aerial Mapping Services for Water & Land Resources Division

The purpose of this contract is to provide surveying and aerial mapping and related services on a work order basis for King County (“County”). The exact disciplines required and the amount of work for…

King CountyPerformance: WADue Sep 10, 2026Posted Sep 1, 2026
Solicitation Type: A&E Solicitation
KNG

Work Order Survey & Aerial Mapping Services for Water & Land Resources Division

The purpose of this contract is to provide surveying and aerial mapping and related services on a work order basis for King County (“County”). The exact disciplines required and the amount of work for…

King CountyPerformance: WADue Sep 10, 2026Posted Aug 11, 2026
Solicitation Type: A&E Solicitation

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Top contracting agencies in Washington

King County4 contracts
DEPT OF THE ARMY3 contracts
Washington3 contracts
INDIAN HEALTH SERVICE2 contracts
FOREST SERVICE1 contracts

Other industries in Washington

Other states for Plumbers

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