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NAICS Code· 237110

Water and Sewer Line and Related Structures Construction

This industry comprises establishments primarily engaged in the construction of water and sewer lines, mains, pumping stations, treatment plants, and storage tanks. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to water, sewer line, and related structures construction. All structures (including buildings) that are integral parts of water and sewer networks (e.g., storage tanks, pumping stations, water treatment plants, and sewage treatment plants) are included in this industry. Illustrative Examples: Distribution line, sewer and water, construction Sewer main, pipe and connection, construction Fire hydrant installation Storm sewer construction Irrigation systems construction Water main and line construction Sewage disposal plant construction Water treatment plant construction Pumping station, water and sewage system, construction Water system storage tank and tower construction Reservoir construction Water well drilling, digging, boring, or sinking (except water intake wells in oil and gas fields) Cross-References. Establishments primarily engaged in--Show more

NAICS 237110 – Water and Sewer Line and Related Structures Construction encompasses the design, installation, rehabilitation, and maintenance of potable water distribution systems, sanitary and stormwater sewer networks, pumping stations, manholes, catch basins, and associated conveyance infrastructure. This sector supports critical public health and environmental compliance objectives through the construction of buried pipelines, trenchless technologies, and hydraulic structures that integrate with municipal, federal, and tribal water resource systems.

540
Active Contracts
$1.7B
Total Obligations (12mo)
693
Awarded Contracts (12mo)
488
Contractors Awarded (12mo)
-67.0%
YoY Growth

Contract Opportunities

Active solicitations and awarded contracts classified under NAICS 237110 — Water and Sewer Line and Related Structures Construction.

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NAICS 237110 FAQ

Frequently Asked Questions

NAICS code 237110 covers Water and Sewer Line and Related Structures Construction. This industry comprises establishments primarily engaged in the construction of water and sewer lines, mains, pumping stations, treatment plants, and storage tanks. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to water, sewer line, and related structures construction. All structures (including buildings) that are integral parts of water and sewer networks (e.g., storage tanks, pumping stations, water treatment plants, and sewage treatment plants) are included in this industry. Illustrative Examples: Distribution line, sewer and water, construction Sewer main, pipe and connection, construction Fire hydrant installation Storm sewer construction Irrigation systems construction Water main and line construction Sewage disposal plant construction Water treatment plant construction Pumping station, water and sewage system, construction Water system storage tank and tower construction Reservoir construction Water well drilling, digging, boring, or sinking (except water intake wells in oil and gas fields) Cross-References. Establishments primarily engaged in--

Recently Posted in Water and Sewer Line and Related Structures Construction

NAICS: 237110
New
SLED
1947 Watermain - North Bound Airport Expressway PreservationThe Port of Seattle’s Aviation Project Management Group is forecasting the restoration of a 1947 water main located along the northbound Airport Expressway using cured-in-place pipe (CIPP) technology under a Design-Bid-Build delivery method. This project aims to preserve the integrity of the aging infrastructure by repairing the water main without extensive excavation, leveraging CIPP’s minimal disruption approach to ensure continued service reliability. The work will focus on repairing and lining the existing pipe to extend its operational life, aligning with long-term asset management goals for critical utility systems supporting airport infrastructure. The solicitation is classified under NAICS code 237110 for Water and Sewer Line and Related Structures Construction, indicating the scope is specific to underground utility rehabilitation. Primary point of contact for inquiries is Moraa Omwega, reachable via phone or email, with Ray Moreno serving as the Project Manager. The contract opportunity is currently in the forecast phase with no solicitation number assigned yet, and no details provided on set-aside status or place of performance beyond the general location along the Airport Expressway. Stakeholders are encouraged to monitor the official portal for when the formal solicitation is published and to prepare for bidding according to Design-Bid-Build procedural requirements.
Aviation Project Management Group

POSTED

about 4 hours ago

DEADLINE

N/A
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NAICS: 237110
New
SLED
T18 Water Main Replacement - ConstructionThe contract involves the replacement of approximately 20,000 feet of water mains along with associated fittings, valves, hydrants, and associated piping within the east 100 acres of Terminal 18. This infrastructure upgrade is intended to modernize and enhance the water distribution system in a critical port area, ensuring reliable service and compliance with operational and safety standards. The work scope encompasses full removal of existing assets and installation of new components, requiring careful coordination to minimize disruptions to port activities. The procurement is being managed by the Northwest Seaport Alliance through the Port of Seattle, with the North American Industry Classification System code 237110 indicating it falls under utility system construction. The opportunity was posted on July 14, 2026, and is currently listed as a forecast, suggesting it is in the pre-solicitation phase with formal bidding expected in the near future. Primary contact for inquiries is Angela Peterson, with Greg Stamatiou serving as the Project Manager, both reachable through direct phone and email provided by the Port of Seattle. All work will take place at Terminal 18, though specific city and state details are not provided in the data.
Northwest Seaport Alliance (NWSA)

POSTED

about 4 hours ago

DEADLINE

N/A
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NAICS: 237110
New
SLED
West Congress (Radam/St. Elmo) Water & WW Pipeline RenewalThe City of Austin is seeking bids for the renewal of approximately 3,404 linear feet of water pipeline and 1,329 linear feet of wastewater pipeline in the West Congress neighborhood, specifically in the Radam and St. Elmo areas. The water pipeline replacement includes 197 linear feet of 6-inch diameter, 1,118 linear feet of 8-inch diameter, and 2,089 linear feet of 12-inch diameter pipe, while the wastewater pipeline will be renewed with 423 linear feet of 6-inch, 754 linear feet of 8-inch, and 152 linear feet of 12-inch pipe. This project is solicited under IFB 6100 CLMC1162, with bids due by August 20, 2026, and the solicitation was published on July 13, 2026. The work is intended to improve infrastructure resilience and service reliability within the neighborhood, with all work to be performed on-site in the designated area. The contract is open to qualified contractors without a specific set-aside designation, and the City of Austin’s Public Works and Transportation Department is managing the procurement. Interested parties should direct project-specific inquiries to Micheal Singleton at 512-974-2979 or micheal.singleton@austintexas.gov, and solicitation-related questions to Steve Cocke at 512-974-7998 or steven.cocke@austintexas.gov. For information regarding small and minority business participation or compliance documentation, contact Donna Powell-Maddox at 512-974-6668 or smbrcompliancedocuments@austintexas.gov. All responses must be submitted through the City’s online procurement portal at the provided link, and bidders are expected to comply with all applicable local regulations and standards for utility construction. The project represents a significant infrastructure upgrade aimed at supporting long-term public health and system efficiency in a high-priority urban corridor.
City of Austin

POSTED

about 20 hours ago

DEADLINE

in about 1 month
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NAICS: 237110
New
Federal
Z--LARO-DRILL NEW WATER WELL - SHERMAN HOMES CABINSThis solicitation, numbered 140P8326Q0046 and titled "Z--LARO-DRILL NEW WATER WELL - SHERMAN HOMES CABINS," is a total small business set-aside under FAR 19.5 for the drilling, construction, testing, disinfection, electrical connection, startup, and commissioning of a new potable water well, designated as Well #1, at the Lake Roosevelt National Recreation Area in Kettle Falls, Washington. The NAICS code is 237110, and the project is managed by the Department of the Interior’s Pwr Olym MABO office. The solicitation is conducted under simplified acquisition procedures per FAR Part 13.106, with award based on the most advantageous offer considering price and other factors, including the offeror’s relevant experience within the last five years. All responses must be submitted electronically to michael_abner@ios.doi.gov by the extended deadline of July 24, 2026, at 2:00 p.m. PDT, and must include a completed SF 1442, price schedule for both the base well and optional second well, technical approach with a detailed work plan, evidence of small business status, active SAM registration, annual reps and certs, and compliance with FAR provisions 52.204-24. The contract requires a lump sum price covering all labor, materials, equipment, mobilization, insurance, overhead, and profit. Successful offerors must provide a site-specific safety plan, liability and workers’ compensation insurance, and both performance and alternative payment bonds. The period of performance is anticipated from August 3, 2026, to November 20, 2026, with work required to commence within ten days of the Notice to Proceed and complete within sixty days thereafter. All construction must comply with OSHA, NFPA 70, EPA, state groundwater regulations, Northeast Tri County Health District well standards, and National Park Service resource protection requirements. The contract incorporates key FAR clauses including 52.236-2 (Differing Site Conditions), 52.236-3 (Site Investigations), 52.225-9 (Buy American—Construction Materials), and 52.211-10 (Commencement, Prosecution, and Completion of Work). Final acceptance depends on potable water lab
Pwr Olym MABO(83000)

POSTED

about 21 hours ago

DEADLINE

in 11 days
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NAICS: 237110
New
Federal
FRSP REPAIR CHANCELLORSVILLE WATER TOWERThe U.S. National Park Service is seeking qualified small businesses to perform repair and paint work on the Chancellorsville Water Tower located at Fredericksburg & Spotsylvania National Military Park. The solicitation, numbered 140P4226R0019, was posted on July 13, 2026, and responses are due by August 11, 2026, at 10:00 PM Eastern Time. This contract is a Total Small Business Set-Aside under FAR 19.5, exclusively available to small businesses as defined by the SBA, and falls under NAICS code 237110 for Water and Sewer Line and Related Structures Construction. A mandatory preproposal site visit is scheduled for July 21, 2026, at 10:00 AM Eastern at the Chancellorsville Visitor Center Parking Lot, 9001 Plank Road, Spotsylvania, VA. Contractors must carefully review Sections L and M of the solicitation to ensure full compliance with submission requirements, including all necessary documentation. The primary point of contact for questions is Brian McCabe, reachable at 202-339-7772 or brian_mccabe@ios.doi.gov, with the contracting office located in Washington, DC.
Nps Conops Strategic DOI

POSTED

about 21 hours ago

DEADLINE

in 29 days
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NAICS: 237110
New
Federal
C--EBHD LIFT STATION (Bureau of Reclamation)The Bureau of Reclamation’s Upper Colorado Regional Office, under the Department of the Interior, is conducting market research to identify qualified contractors for the design-build replacement of an existing sewage lift station located within a federally managed historic district. This sources sought notice, issued under solicitation number 140R4026Q0118 and classified under NAICS code 237110, is not a solicitation or binding commitment but aims to evaluate industry capabilities to inform the future acquisition strategy, including potential small business set-asides. Responses are due by July 28, 2026, and must be submitted to the primary point of contact, Ronda Lucero, via email or phone provided. The project will require specialized expertise in navigating historic district regulations while executing complex infrastructure replacement, with performance location details pending further definition. No reimbursement will be provided for response costs, and interested firms must wait for a subsequent formal solicitation to submit proposals.
Upper Colorado Regional Office

POSTED

about 21 hours ago

DEADLINE

in 14 days
View Details
NAICS: 237110
New
Federal
Replace Fire Hydrant and Drain Gate Valve, Pump Station No. 1, DFSP Hachinohe, JapanThe contract solicitation N4008426Q7008 seeks a firm fixed-price contractor to replace fire hydrant and drain gate valves at Pump Station No. 1, Defense Fuel Support Point Hachinohe, Japan, in accordance with the Statement of Work and NAVFAC drawings. All labor, materials, equipment, transportation, supervision, and engineering must be furnished by the contractor, with performance required to be completed within 270 calendar days from the date of award, beginning no later than 15 calendar days after award. Offers must be submitted electronically via the DoD Solicitation Module in PIEE in Adobe PDF format by 11:00 AM Japan Standard Time on August 7, 2026; hand delivery is permitted but email submissions are strictly prohibited. Offerors must be registered in the System for Award Management (SAM) with an active status at submission, and must maintain that registration through award and performance. Compliance with the Cybersecurity Maturity Model Certification (CMMC) Level 1 (Self) or higher is mandatory, with current CMMC status must be reflected in the Supplier Performance Risk System. Contractors must be legally authorized to operate in Japan, possess a Japanese bank account for payment through DFAS Japan, and comply with all local laws, regulations, and labor standards. The contract includes clauses related to disputes, changes, inspection, warranty, termination, and flow-down requirements, with deviations applied to key provisions including Disputes, Changes and Changed Conditions, and Termination for Convenience. The contractor must also adhere to Buy American requirements, prohibitions on trafficking in persons and covered telecommunications equipment, and antiterrorism and force protection guidance. All correspondence, documentation, and subcontractor communications must be in English, and payment will be processed in Japanese yen through Wide Area Workflow, with invoicing details provided by the government. A mandatory site visit and pre-quote conference occurred on July 28, 2026, at Misawa Air Base requiring prior submission of the Site Visit Log by July 14, 2026, with only two personnel and one vehicle per company permitted and photo ID required. Additionally, Amendment 0001 modified the CMMC level requirements under DFARS 252.204-7021 and 252.204-7025 and changed the timing of the pre-quote conference; offerors must submit a signed SF30 acknowledging receipt of this amendment with
Navfacsyscom Far East

POSTED

about 21 hours ago

DEADLINE

in 24 days
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NAICS: 237110
New
Federal
ACC002 Utilities and InfrastructureThe U.S. Army Corps of Engineers, Alaska District, is seeking market intelligence through a voluntary Request for Information to gauge industry interest and capability for the Phase I of the Utilities and Infrastructure Fighter Town Recapitalization at Joint Base Elmendorf Richardson, Alaska. This multi-hundred-million-dollar project involves massive civil earthworks totaling approximately 10 million cubic yards, installation of a new 20 MVA electrical substation, comprehensive utility networks for over 25 future buildings, and construction of heavy-duty airfield pavements, a dedicated airfield lighting vault, and a new POL tank farm with truck fill stand. The acquisition will be executed under Other Transaction Authority (10 U.S.C. § 2808a) using a Construction Manager at Risk (CM@R) delivery model, distinct from traditional contracting, to enable flexibility in adopting innovative construction technologies and fast-track execution. The estimated total project value ranges between $400 million and $600 million, with a phased approach beginning with preconstruction services and transitioning to construction upon agreement on a Guaranteed Maximum Price. Respondents are expected to provide detailed insights into their technical capabilities, particularly regarding innovative materials and methods that could enhance resilience, reduce cost, or accelerate delivery, as well as their prior experience with OTAs and CM@R processes. The government is specifically interested in understanding how collaborative preconstruction engagement, open-book pricing, phased bonding, and flexible payment milestones can improve outcomes on large-scale infrastructure in challenging environments like Alaska. Key questions address risk allocation, compensation structures if the project “off-ramps” before construction, data rights ownership, long-lead item procurement strategies, supply chain constraints in the region, and subcontractor integration models. The Alaska District is evaluating whether the CM@R-OTA combination offers advantages over traditional procurement and seeks feedback on bonding timelines, funding gap mitigations, and market conditions that may affect responsiveness. All responses must be submitted by July 24, 2026, to the designated points of contact, with no obligation or reimbursement provided to participants, and participation does not guarantee future eligibility for a solicitation.
W2SN Endist Alaska

POSTED

about 21 hours ago

DEADLINE

in 11 days
View Details
NAICS: 237110
New
Federal
WWTP REPAIR CLARIFIER #2This solicitation, identified as N4008526R0174, is for the complete replacement of Clarifier #2 at the Northwest Wastewater Treatment Plant in Chesapeake, Virginia, and is restricted exclusively to Multiple Award Construction Contract (MACC) contractors primarily operating in the Hampton Roads area of Virginia holding one of the designated MACC contract numbers: N4008523D0043, D0044, D0045, D0046, D0047, or D0048. The work encompasses demolition of the existing clarifier structure, excavation, utility coordination, and installation of a new clarifier with metal surface cleaning via SSPC-SP6 sandblasting and painting. The project is governed by NAVFAC Specification Work Order No. 1743738 and associated drawings, with mandatory compliance to Division 01 General Requirements and additional technical directives outlined in Attachments A through K. Proposals must be submitted electronically via the PIEE Solicitation Module by 1400 EDT on June 23, 2026, with an optional hard copy delivered within three calendar days, and late submissions will be rejected without exception. Only small business concerns participating in the 8(a) program are eligible to respond, and award will be made based solely on lowest price, with a 100% price evaluation factor as per FAR 16.505 fair opportunity procedures. The contract imposes stringent administrative, safety, and reporting obligations including mandatory use of the NAVFAC eCMS platform for all technical submittals, with paper and email submissions prohibited. Contractors must adhere to detailed invoicing procedures through Wide Area WorkFlow (WAWF), submitting a comprehensive package including NAVPAC Form 7300/30, Earned Value Reports, NAVPAC Form 4330, monthly work-hour reports, construction progress schedules, safety self-evaluation checklists, certified payrolls, and updated testing logs. All invoices must meet DFARS 252.232-7006 WAWF attachment requirements, with a two-megabyte maximum per document. The contractor must maintain current QC program records, daily reporting, and a site-based submittal register until final acceptance. Safety compliance is enforced through adherence to USACE EM 385-1-1, requiring designated Competent Persons for scaffolding and fall
Navfacsyscom Mid-Atlantic

POSTED

about 21 hours ago

DEADLINE

in about 1 month
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NAICS: 237110
New
Federal
99 CES - INSTALL FLOW METER FOR FACILITY 1711The contract solicitation FA486126R0019, issued by the 99th Civil Engineer Squadron at Nellis Air Force Base in Nevada, seeks a small business to install a replacement water flow meter at Facility 1711, known as Nellis Well #12. The requirement is a Total Small Business Set-Aside under FAR 19.5, limiting eligibility to certified small businesses only. The scope encompasses the complete removal of the failed meter, installation of a new McCrometer flanged propeller meter or approved equivalent with a gallons-per-minute indicator-totalizer, associated site preparation, testing, and restoration of service in compliance with OSHA, AFOSH, UFC, IBC, IPC, NAFB IFS, and local Nevada and Clark County codes. All work must be performed in a workmanlike manner with minimal disruption to base operations and requires coordination with the 99 CES Representative. Performance must be completed within 90 calendar days after receipt of the Notice to Proceed, with standard work hours restricted to 7 a.m. to 4 p.m., Monday through Friday, excluding federal holidays. Contractors must secure base access well in advance by submitting required personal and vehicle documentation to the Nellis Visitors’ Center, as processing takes up to two weeks. Utility outages require 30 days’ notice and submission of Air Force Form 103, with no single outage exceeding four hours and limited to once every two weeks without approval. A one-year parts-and-labor warranty must be submitted upon completion, and all operational testing must be conducted with the Government POC present, following three days’ advance notice. The contractor must maintain a clean worksite, provide a Site Superintendent during all operations, and comply with environmental and security protocols including the NAFB Management Plan 12. No formal FAR clauses, pricing data, or evaluation factors are specified in the provided documents; instead, requirements are embedded in project-specific provisions, with final acceptance performed on-site by the 99 CES Representative. Submission is electronic via the SAM.gov portal, with responses due by July 21, 2026.
FA4861 99 Cons Lgc

POSTED

about 21 hours ago

DEADLINE

in 8 days
View Details
NAICS: 237110
New
Federal
Replace Potable Water Valve on Pier for USCG in Natchez, MSThe United States Coast Guard is seeking qualified small businesses to provide all labor, tools, equipment, and materials for a potable water system upgrade at the CGC GREENBRIER UPH BUILDING in Natchez, Mississippi. The project requires removal and replacement of a 2.5-inch inground valve, approximately 25 feet of underground PVC piping, and 65 feet of above-ground Schedule 80 PVC piping running across a wooden railing toward the tramway. A critical component involves routing a reducer from 2.5-inch to 2.0-inch Schedule 80 PVC beneath the tramway for an 88-foot run, followed by two tee connections branching off to 1.5-inch Schedule 80 PVC lines serving potable water access points next to the tramway’s highest pins, spaced about 87 feet apart. Each access point must include an upward-facing bleed valve, a cut-off valve, and a downward-facing 1.5-inch NPT thread adapter. Contractors must coordinate with the local city water utility to ensure water shutoffs do not exceed a single workday and are responsible for verifying all existing site conditions, clearances, and dimensions prior to quoting. This is a total small business set-aside under NAICS code 237110, and all offerors must be actively registered in SAM.gov. Proposals must be submitted as firm-fixed price quotes by the deadline and include pricing, technical approach, and past performance information. The award will be based on the lowest priced technically acceptable response, with past performance evaluated for relevance, quality, and timeliness—those without relevant experience will receive a neutral rating. Site visits are strongly encouraged, and potential bidders should contact Chief Anthony DeLorenzo to arrange access to the facility. The solicitation, issued as a Request for Quotation under FAR Part 36, includes applicable Department of Labor wage rates and excludes payment and performance bonds. All responses must be sent to Joel Ivy by the specified deadline, and visual references provided in the scope of work must be thoroughly reviewed as they govern the understanding of required work.
Base New ORLEANS(00029)

POSTED

about 21 hours ago

DEADLINE

in 13 days
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NAICS: 237110
New
Federal
Y--NGWSP Turnout BuildingsThe U.S. Bureau of Reclamation, through the Upper Colorado Regional Office of the Department of the Interior, is seeking qualified contractors for the construction of turnout buildings as part of the Navajo Gallup Water Supply Project (NGWSP), with work to be performed across multiple sites including Sanostee, Newcomb, Naschitti, BBN9, Coyote Canyon, Rock Springs, and Window Rock. This presolicitation under solicitation number 140R4026B0002 targets small businesses and seeks market interest prior to issuing a formal contract. The scope includes building and installing precast concrete turnout structures with full foundations, sitework involving buried piping, steel fencing, access roads, gravel surfacing, and drainage systems, along with critical connectivity to existing steel supply and distribution pipelines. Each turnout building must include an identical control system supporting DNP 3.0, Modbus Serial, Modbus TCP, and HART protocols, and a synchronized IP-based digital video surveillance system for remote monitoring. All work must adhere to stringent geotechnical, material, and construction specifications, including compliance with Reclamation Safety and Health Standards, the Architectural Barriers Act, the Americans with Disabilities Act, and federal Buy American requirements, with Alternate 1 of FAR 52.223-3 governing hazardous material identification. Contractors must submit detailed proposals demonstrating bonding capacity, business size and socioeconomic status, and proven experience as a prime contractor on comparable projects. Key personnel—including a project manager, site superintendent, safety representative, and quality control supervisor—must be preapproved and meet specific experience thresholds, with changes requiring 48 hours’ notice and government consent. All materials must be stored, transported, and handled in accordance with manufacturer guidelines and federal regulations, with coating materials restricted to 5-gallon containers and CLSM requiring batch tickets per ASTM C94. CLSM must achieve a 7-day compressive strength between 50 and 150 lb/in², with 70% of test cylinders exceeding 75 lb/in², while surface coatings must pass rigorous ASTM tests for abrasion, impact, adhesion, salt fog/UV exposure, and cathodic disbondment. Documentation deliverables include as-built drawings, operations and maintenance manuals, final bills of materials, and test certifications, all submitted via electronic invoicing through the Contract Document Management System. Proposals are due by August 12, 2026, and must be emailed to the contracting specialist
Upper Colorado Regional Office

POSTED

about 21 hours ago

DEADLINE

in 29 days
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