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NAICS 237110, industry

NAICS 237110: Water and sewer line and related structures construction

NAICS 237110 is the industry code for water and sewer line and related structures construction. Use it on loan applications, tax forms and registrations. Explore financing for construction and start your application when you are ready.

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What 237110 covers

Businesses classified here build water mains, sewer lines, pumping stations, treatment plants and storm drains, and drill water wells.

Included in this code

  • Water and sewer main construction
  • Storm sewer construction
  • Water well drilling
  • Pump station construction
  • Water and wastewater treatment plant construction
  • Irrigation system construction

Not this code

Businesses that use 237110

Utility contractor laying water and sewer mainsWater well drillerTreatment plant builder

Financing for this trade

Heavy civil contractors use equipment loans and leases for excavators, dozers and trucks, working capital lines sized to backlog and invoice factoring on public and prime contractor receivables. Lenders look at bonding capacity, work in progress schedules, retainage and backlog.

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Is 237110 the right code for a water, sewer or well drilling contractor?

Yes, if your business builds water and sewer lines or treatment plants, or drills water wells. The code for plumbing inside buildings is 238220. Pick the code that matches the activity earning most of your revenue, and use that same code on your tax return, loan applications and SBA forms so lenders see one consistent picture.

What is the SBA size standard for 237110?

The SBA size standard for 237110 is $45 million in average annual receipts. A business at or under that figure, counting affiliates, is small for SBA loans such as 7(a) and 504 and for federal contracting set asides. Receipts are averaged over the five most recently completed fiscal years.

What financing do water and sewer contractors use?

Heavy civil contractors use equipment loans and leases for excavators, dozers and trucks, working capital lines sized to backlog and invoice factoring on public and prime contractor receivables. Lenders look at bonding capacity, work in progress schedules, retainage and backlog. Lenders that already fund this trade move faster because they know how to read its cash cycle.

What does NAICS 237110 cover?

Water and sewer line and related structures construction. Industry level code in NAICS 2022, under 23 Construction, 237 Heavy and civil engineering construction, 2371 Utility system construction, 23711 Water and sewer line and related structures construction.

What financing do NAICS 237110 businesses use?

Equipment financing, working capital, SBA loans and invoice factoring are the products placed most for construction businesses. Start an application and the AI matches the deal to lenders that fund this code.

Where do I put NAICS 237110?

On the SBA loan application, on federal Schedule C or Form 1120, on SAM.gov and state registrations, and on most lender applications. A business can report more than one code; use this one if it describes what produces most of your revenue.