Water, Sewage and Other Systems

OJT for Water, Sewage and Other Systems: NAICS 2213

The Water, Sewage and Other Systems subsector is part of the Utilities sector.

Drinking and wastewater operation and treatment facilities are part of the utilities sector (NAICS 22). Industries in this sector include water treatment plants, water supply systems, sewer systems, and/or sewage treatment facilities that collect, treat, and dispose of waste.

The Water, Sewage and Other Systems subsector include the following industries:

  • Water Supply and Irrigation Systems
  • Sewage Treatment Facilities
  • Steam and Air-Conditioning Supply

Subsector Context

The following chart breaks down the parent sector into its subsectors. It shows the percentage of people that these subsectors employ, relative to the entire sector, and the projected growth of these subsectors through 2026.

Largest Occupations

The following table shows the top 10 projected occupations, in size, for this subsector through 2026. It also shows the educational requirements and OJT requirements for these top-sized occupations. The OJT.com training directory provides a listing of the state-by-state training providers that can fulfill your on-the-job training requirements.

Largest Occupations in Subsector, Projected for 2026

Occupation 2026 Projected Employment (in thousands) 2026 Projected Percent of Subsector Percent Employment Change (2016-2026) Education Requirements OJT Requirements
Water and wastewater treatment plant and system operators 14.2 25.9 3.6 High school diploma or equivalent Long-term on-the-job training
Maintenance and repair workers, general 3.1 5.6 15.1 High school diploma or equivalent Long-term on-the-job training
Office clerks, general 2.5 4.6 3.6 High school diploma or equivalent Short-term on-the-job training
Meter readers, utilities 2.4 4.4 3.6 High school diploma or equivalent Short-term on-the-job training
General and operations managers 2.3 4.3 15.1 Unknown Unknown
First-line supervisors of production and operating workers 2.2 4.1 15.1 High school diploma or equivalent None
Secretaries and administrative assistants, except legal, medical, and executive 2.0 3.6 -2.2 High school diploma or equivalent Short-term on-the-job training
Customer service representatives 1.9 3.4 15.1 High school diploma or equivalent Short-term on-the-job training
Plumbers, pipefitters, and steamfitters 1.8 3.2 15.1 High school diploma or equivalent Apprenticeship
Construction laborers 1.5 2.8 15.1 No formal educational credential Short-term on-the-job training

Growth Occupations

The following table shows the top 10 projected occupations, in growth, for this subsector through 2026. It also shows the educational requirements and OJT requirements for these top-growth occupations. The OJT.com training directory provides a listing of the state-by-state training providers that can fulfill your on-the-job training requirements.

Highest Growth Occupations in Subsector, Projected thru 2026

Occupation 2026 Projected Employment (in thousands) 2026 Projected Percent of Subsector Percent Employment Change (2016-2026) Education Requirements OJT Requirements
Financial managers 0.2 0.4 26.6 Bachelor’s degree None
Maintenance and repair workers, general 3.1 5.6 15.1 High school diploma or equivalent Long-term on-the-job training
General and operations managers 2.3 4.3 15.1 Unknown Unknown
First-line supervisors of production and operating workers 2.2 4.1 15.1 High school diploma or equivalent None
Customer service representatives 1.9 3.4 15.1 High school diploma or equivalent Short-term on-the-job training
Plumbers, pipefitters, and steamfitters 1.8 3.2 15.1 High school diploma or equivalent Apprenticeship
Construction laborers 1.5 2.8 15.1 No formal educational credential Short-term on-the-job training
First-line supervisors of office and administrative support workers 1.3 2.3 15.1 High school diploma or equivalent None
Control and valve installers and repairers, except mechanical door 1.1 1.9 15.1 High school diploma or equivalent Moderate-term on-the-job training
Industrial machinery mechanics 0.9 1.7 15.1 High school diploma or equivalent Long-term on-the-job training

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