North American Industry Classification System (NAICS) code 237110 is used by federal buyers for market research, set-aside size standards, and reporting. Official titles come from the Census Bureau NAICS structure.
Official definition
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.
Included activity examples
- Distribution line, sewer and water, construction
- Fire hydrant installation
- Irrigation systems construction
- Pumping station, water and sewage system, construction
- Reservoir construction
- Sewage disposal plant construction
- Sewer main, pipe and connection, construction
- Storm sewer construction
- Water main and line construction
- Water system storage tank and tower construction
- Water treatment plant construction
- Water well drilling, digging, boring, or sinking (except water intake wells in oil and gas fields)
- Official title
- Water and Sewer Line and Related Structures Construction
- Code level
- 6
- Open opportunities
- 88 open · 601 active
SBA small-business size standard
$45M average annual receipts
Average annual receipts basis
Check this standard and its exceptionsExcluded or separately classified activities
Official Census cross-references identify activities that belong under another North American Industry Classification System (NAICS) code.
Constructing marine facilities (e.g., ports), flood control structures, dams, or hydroelectric power generation facilities--are classified in Industry 237990, Other Heavy and Civil Engineering Construction;
Drilling oil and gas field water intake wells--are classified in U.S. Industry 213111, Drilling Oil and Gas Wells; and
Installing and maintaining water and sewer lines performed by water and sewage utilities companies--are classified in Industry Group 2213, Water, Sewage and Other Systems.
Installing septic tanks--are classified in Industry 238910, Site Preparation Contractors;
Source and edition
2022 NAICS Manual definition and reference material from the U.S. Census Bureau.