| Naics index | Naics index description |
|---|---|
| 237110 | Aqueduct construction |
| 237110 | Artesian well construction |
| 237110 | Capping of water wells |
| 237110 | Construction management, water and sewage treatment plant |
| 237110 | Construction management, water and sewer line |
| 237110 | Distribution line, sewer and water, construction |
| 237110 | Drilling water wells (except water intake wells in oil and gas fields) |
| 237110 | Fire hydrant installation |
| 237110 | Geothermal drilling |
| 237110 | Hydrant and flushing hydrant installation |