NAICS Code 23711 — Water and Sewer Line and Related Structures Construction

NAICS Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It contains 1 direct sub-code.

Code	23711
Title	Water and Sewer Line and Related Structures Construction
Level	NAICS Industry (5-digit)
Edition	NAICS 2022 edition

Official definition (2022 NAICS)

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)

This national industry shares the official Census description of 237110.

Where 23711 sits in the hierarchy

Level	Code	Title
Sector	23	Construction
Subsector	237	Heavy and Civil Engineering Construction
Industry Group	2371	Utility System Construction
NAICS Industry	23711	Water and Sewer Line and Related Structures Construction

Codes under 23711

Code	Title
237110	Water and Sewer Line and Related Structures Construction

Related NAICS Industry codes

• 23712 — Oil and Gas Pipeline and Related Structures Construction
• 23713 — Power and Communication Line and Related Structures Construction

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.