221 Utilities
| 1997 NAICS |
1997 NAICS U.S. Description | Codes | 1987 SIC |
1987 U.S. SIC Description | |
|---|---|---|---|---|---|
| 221 | Utilities | ||||
| 2211 | Electric Power Generation, Transmission and Distribution | c | |||
| 22111 | Electric Power Generation | c | |||
| 221111 | Hydroelectric Power Generation | c | N | *4911 | Electric Services (hydroelectric power generation) |
| *4931 | Electric and Other Services Combined (hydroelectric power generation) | ||||
| *4939 | Combination Utilities, NEC (hydroelectric power generation) | ||||
| 221112 | Fossil Fuel Electric Power Generation | c | N | *4911 | Electric Services (fossil fuel power generation) |
| *4931 | Electric and Other Services Combined (fossil fuel power generation) | ||||
| *4939 | Combination Utilities, NEC (fossil fuel power generation) | ||||
| 221113 | Nuclear Electric Power Generation | c | N | *4911 | Electric Services (nuclear electric power generation) |
| *4931 | Electric and Other Services Combined (nuclear power generation) | ||||
| *4939 | Combination Utilities, NEC (nuclear power generation) | ||||
| 221119 | Other Electric Power Generation | c | N | *4911 | Electric Services (other electric power generation) |
| *4931 | Electric and Other Services Combined (other electric power generation) | ||||
| *4939 | Combination Utilities, NEC (other electric power generation) | ||||
| 22112 | Electric Power Transmission, Control, and Distribution | c | |||
| 221121 | Electric Bulk Power Transmission and Control | c | N | *4911 | Electric Services (electric power transmission and control) |
| *4931 | Electric and Other Services Combined (electric power transmission and control) | ||||
| *4939 | Combination Utilities, NEC (electric power transmission and control) | ||||
| 221122 | Electric Power Distribution | c | N | *4911 | Electric Services (electric power distribution) |
| *4931 | Electric and Other Services Combined (electric power distribution) | ||||
| *4939 | Combination Utilities, NEC (electric power distribution) | ||||
| 2212 | Natural Gas Distribution | c | |||
| 22121 | Natural Gas Distribution | c | R | *4923 | Natural Gas Transmission and Distribution (distribution) |
| 4924 | Natural Gas Distribution | ||||
| 4925 | Mixed, Manufactured, or Liquefied Petroleum Gas Production and/or Distribution | ||||
| *4931 | Electric and Other Services Combined (natural gas distribution) | ||||
| 4932 | Gas and Other Services Combined (natural gas distribution) | ||||
| *4939 | Combination Utilities, NEC (natural gas distribution) | ||||
| 2213 | Water, Sewage and Other Systems | c | |||
| 22131 | Water Supply and Irrigation Systems | c | R | 4941 | Water Supply |
| 4971 | Irrigation Systems | ||||
| 22132 | Sewage Treatment Facilities | c | E | 4952 | Sewerage Systems |
| 22133 | Steam and Air-Conditioning Supply | c | E | 4961 | Steam and Air-Conditioning Supply |
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