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NAICS Code· 221310

NAICS 221310: Water Supply and Irrigation Systems

This industry comprises establishments primarily engaged in operating water treatment plants and/or operating water supply systems. The water supply system may include pumping stations, aqueducts, and/or distribution mains. The water may be used for drinking, irrigation, or other uses. Cross-References.Show more

NAICS 221310 – Water Supply and Irrigation Systems encompasses the design, construction, rehabilitation, and maintenance of infrastructure dedicated to potable water delivery, wastewater conveyance, stormwater management, and agricultural or landscape irrigation systems. This includes pipelines, pumping stations, reservoirs, treatment facilities, control valves, metering systems, and aquifer recharge structures.

52
Active Contracts
$125.0M
Total Obligations (12mo)
574
Awarded Contracts (12mo)
310
Contractors Awarded (12mo)
1
Median Bidders per Award
-53.8%
YoY Growth

Awarded Contractors

Companies that have received federal awards classified under NAICS 221310.

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NAICS 221310 FAQ

Frequently Asked Questions

NAICS code 221310 covers Water Supply and Irrigation Systems. This industry comprises establishments primarily engaged in operating water treatment plants and/or operating water supply systems. The water supply system may include pumping stations, aqueducts, and/or distribution mains. The water may be used for drinking, irrigation, or other uses. Cross-References.

Recently Posted in Water Supply and Irrigation Systems

NAICS: 221310
New
Elm City Contract #1 – Drinking Water System Improvements for Oak View Mobile Home Park
Solicitation # elm-city-contract-1-drinking-water-system-improvements-oak-view-mobile-home-park
This solicitation, issued by HG Reynolds Company Inc., focuses on drinking water system improvements for the Oak View Mobile Home Park in North Carolina. The project is categorized under NAICS code 221310 and is open to various set-aside categories, including Small Business, HUBZone Small Business, Disadvantaged Business Enterprise, Minority Business Enterprise, and Woman Business Enterprise. The opportunity was posted on August 28, 2026, with a response deadline of September 3, 2026. Interested parties can coordinate with the primary point of contact, Cassie Hoy, regarding the submission process and project requirements.
HG Reynolds Company Inc.

POSTED

about 16 hours ago

DEADLINE

in 5 days
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NAICS: 221310
New
Federal
Replace filter media of Water Treatment Plant at Camp Humphreys
Solicitation # W51LL526QA016
Solicitation W51LL526QA016 is a firm fixed price requirement for the replacement of filter media with new Granular Activated Carbon at the Water Treatment Plant located at Camp Humphreys, Republic of Korea. The project is managed by the 411th Contract Support Battalion and falls under NAICS code 221310. Proposals are due by September 2, 2026, and must be submitted electronically via the PIEE Solicitation Module. The award will be based on the Lowest Price Technically Acceptable (LPTA) method, evaluating technical approach, management plan, and past performance. Amendment 0001 clarified that experience replacing membrane filter media or modules in water treatment facilities is acceptable for past performance qualifications. Offerors must submit two volumes: Volume I for past performance, requiring evidence of at least one relevant project of 100 cubic meters or greater within the last five years, and Volume II for pricing in Korean Won. The contract mandates strict adherence to safety standards, including OSHA 29 CFR 1926 and EM 385-1-1, and requires a comprehensive safety plan and certified personnel for CPR, first aid, and specialized tasks like confined space entry. Additionally, the contract incorporates USFK Status of Forces Agreement (SOFA) provisions for tax exemptions and requires compliance with DFARS regulations regarding the safeguarding of covered defense information and the use of local Korean residents for labor. Invoicing must be processed through the Wide Area WorkFlow (WAWF) system.
0906 Aq Co Det B Contracti

POSTED

2 days ago

DEADLINE

in 4 days
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NAICS: 221310
Awarded
Federal
J--NCR-NAMA: LMRP TREATMENT
Solicitation # 140P8526Q0061
This contract, identified by solicitation number 140P8526Q0061, is a firm-fixed price commercial award set aside entirely for small businesses under NAICS code 221310, issued by the Department of the Interior’s National Park Service, PWR - SF/SEA MABO office in San Francisco, California. The contract is for the operation and maintenance of the Lincoln Memorial Reflecting Pool water treatment plant, including daily, monthly, and annual tasks such as mechanical and electronic equipment operation, filter and skimmer cleaning, debris removal from the pool and walkways, monthly pressure washing of coping stones between 11 PM and 5 AM, annual camera inspection and jetting of supply/return lines, and confined space entry for Dual Vortex Separator maintenance in compliance with OSHA 29 CFR 1910.146. Performance is required at the water treatment plant site, with work to be conducted under the supervision of a Contracting Officer’s Representative who will perform inspections and accept deliverables based on compliance with the Scope of Work. The contract includes a base period from August 3, 2026, to August 2, 2027, with four optional one-year extensions and a potential six-month extension beyond that, giving the government flexibility to extend performance through February 2032. All offerors must be registered in the System for Award Management with an active Unique Entity Identifier and certified as a small business under the specified NAICS code. Proposals must include a completed checklist, signed SF-1449, a project narrative detailing technical approach and experience, at least three recent references for similar work, resumes of key personnel with certifications, and pricing on Attachment 6 – Bid Sheet. Proposals must be emailed to the contract specialist by July 1, 2026, at 12:00 PM ET. Successful offerors must provide the names and contact details, including cellular numbers, of a primary and alternate representative to manage contract performance and ensure compliance with all safety and security protocols, including uniformed personnel with pictured identification, marked vehicles, and adherence to government property protection and accident reporting requirements under FAR 52.236-13. Payments must be submitted monthly through the Invoice Processing Platform at www.ipp.gov with accompanying PDF attachments that include pricing breakdowns, contract number, invoice date, service dates, and vendor letterhead, with failure to comply resulting in invoice rejection.
Pwr Sf/sea MABO(85000)

POSTED

2 days ago

DEADLINE

N/A
View Details
NAICS: 221310
New
Federal
H946--Sterile Processing Water Quality Chillicothe VA Medical Center
Solicitation # 36C25026Q0430
This contract is for sterile processing water quality services at the Chillicothe VA Medical Center, with a performance period consisting of a base year and four option years. The selected vendor must provide comprehensive maintenance and water quality analysis, including the supply of specific piping, filters, membranes, and UV lamps. Services include monthly and quarterly preventative maintenance visits, with the first maintenance scheduled within 30 days of award. All work is generally performed during normal business hours, though some tasks may occur outside these shifts, and all personnel must adhere to strict facility check-in and identification protocols at Building 21. Evaluation is based on the contractor's technical expertise in AAMI ST108 standards, water treatment technologies such as reverse osmosis and ion exchange, and emergency response capabilities, with priority given to vendors located within 100 to 200 miles. Water quality analysis requires ISO/IEC 17025 certified laboratories and experienced samplers with at least five years of biological sampling expertise. Reporting must include biological and chemical analysis results, water quality classifications, and remediation recommendations, delivered to the Engineering COR within five business days of a visit or three days of receiving lab results.
250-NETWORK Contract Office 10 (36C250)

POSTED

2 days ago

DEADLINE

in 5 days
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NAICS: 221310
New
Federal
Preventative Maintenance and Repairs for Water Treatment Equipment
Solicitation # N6852026Q1054
The Fleet Readiness Center, under the Department of Defense, is seeking quotes for solicitation N6852026Q1054 to provide preventative maintenance and repairs for water treatment equipment. The work will be performed at Marine Corps Air Station Cherry Point in North Carolina. This procurement is designated as a total small business set-aside under NAICS code 221310. Interested parties must submit all questions by September 9, 2026, and provide final quotes to Jessica Franceschini by the response deadline of September 14, 2026. The contract is managed by the Commander Fleet Readiness Center Procurement Group based in Patuxent River, Maryland.
Fleet Readiness Center

POSTED

2 days ago

DEADLINE

in 16 days
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NAICS: 221310
Closed
Enfield Phase 7 Water System Improvements
Solicitation # enfield-phase-7-water-system-improvements
The Enfield Phase 7 Water System Improvements project is a solicitation issued by HG Reynolds Company Inc. for water system infrastructure work located in North Carolina. This contract is specifically set aside for various small business categories, including SBA certified HUBZone small businesses, Disadvantaged Business Enterprises, Minority Business Enterprises, and Women Business Enterprises. The solicitation was posted on August 26, 2026, with a very short response window closing on August 27, 2026. Primary coordination for this opportunity is handled by Cassie Hoy, and the project falls under the NAICS code 221310.
HG Reynolds Company Inc.

POSTED

2 days ago

CLOSED

2 days ago
View Details
NAICS: 221310
New
SLED
IFB27-003 Glynn County Drinking Water System Services - Multi Year Contract
Solicitation # PE-66300-NONST-2027-000000125
The Board of Commissioners of Glynn County, Georgia, is seeking proposals from qualified vendors under solicitation PE-66300-NONST-2027-000000125 to provide regular drinking water system services for various county offices. The selected vendor will be responsible for the delivery of drinking water for employees and visitors, which includes the provision and maintenance of water dispensers and ensuring full compliance with all applicable safety regulations. This multi year contract requires vendors to adhere to the specific requirements and specifications outlined in the program services section to ensure consistent service delivery. Interested parties must submit their responses by the deadline of September 23, 2026, at 6:30 PM. The procurement process is managed through the Glynn County e-Procurement Portal in partnership with OpenGov, which serves as the centralized hub for vendor registration, solicitation tracking, and the submission of electronic responses. Primary inquiries regarding this opportunity should be directed to Maria Thompson.
Glynn County Board of Commissioners

POSTED

2 days ago

DEADLINE

in 25 days
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NAICS: 221310
Awarded
DIBBS
DISTILLED-DEIONIZED WATER
Solicitation # SPE4A626FD7KH
The Defense Logistics Agency awarded contract SPE4A626FD7KH to ASRC Federal Facilities Logistics on August 26, 2026. This delivery order, issued under the primary contract SPE4AX16D9008, is valued at 379.47 dollars. The scope of this award is for the procurement of distilled-deionized water, identified by national stock number 6810003564936 and purchase request 7018074287. The contract was managed by the Department of Defense.
Defense Logistics Agency

POSTED

3 days ago

DEADLINE

N/A
View Details
NAICS: 221310
New
Ductile Iron Pipe Supply
Kiewit Infrastructure West Co.

POSTED

3 days ago

DEADLINE

in 19 days
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NAICS: 221310
New
SLED
Water Tank and Water System ImprovementsThe City of Los Banos in California is seeking a subcontractor for the Water Tank and Water System Improvements project. The scope of work involves the installation of a water storage tank and all associated piping required for the site water supply, with a specific requirement for the inclusion of backflow prevention systems. This opportunity is categorized under NAICS code 221310 and is located in Los Banos, California, zip code 93635. The solicitation was posted on August 26, 2026, and the deadline for responses is September 9, 2026, at 9:00 PM.
City of Los Banos

POSTED

3 days ago

DEADLINE

in 12 days
View Details
NAICS: 221310
New
Federal
J046--Water Purification Upgrade Install Service
Solicitation # 36C25926Q0810
The Department of Veterans Affairs Network Contracting Office 19 intends to award a sole source procurement to Evoqua Water Technologies for installation services to upgrade the Sterile Processing Services Reverse Osmosis water purification system. The scope of work includes labor to remove the old unit and install a new higher capacity RO unit, mounting UV and final filter housings, and providing necessary Schedule 80 PVC components. This action is designated as a sole source because Evoqua is the original manufacturer, and utilizing another provider would void the system's extended warranty and compromise the integrity of patient care operations. The procurement falls under NAICS code 221310 with a business size standard of 41.0 million dollars. While the government intends to award the contract to Evoqua, interested parties may submit evidence of their capability to meet the requirements to the contracting officer by September 2, 2026. The final determination regarding competition remains at the sole discretion of the government.
Network Contract Office 19 (36C259)

POSTED

3 days ago

DEADLINE

in 4 days
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NAICS: 221310
Awarded
SLED
Hoover Irrigation Pumps Maintenance and Support
Solicitation # SS260364KCW
Lee County Facilities and Construction Management is seeking a single-source procurement from Hoover Pumping Systems Corporation for the maintenance and support of existing irrigation pump stations. The scope of work includes software updates, controller upgrades, filter system maintenance, and the provision of Flowguard software for remote operations. This software is critical for managing water supplies, controlling lake depths, and generating mandatory water use reports for the South Florida Water Management District. Hoover Pumping Systems Corporation is identified as the sole provider capable of supporting the Flowguard Smart software and supplying the necessary replacement components for the current infrastructure. The solicitation, numbered SS260364KCW, was posted on August 26, 2026, with a response deadline of September 17, 2026. Interested parties who believe they can meet these requirements are directed to contact Kevin Walker at Lee County Procurement Management.
Lee County

POSTED

3 days ago

DEADLINE

in 20 days
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