Industry: 1781—Water Well Drilling
Special trade contractors primarily engaged in water well drilling. Establishments primarily engaged in drilling oil or gas field water intake wells on a contract or fee basis are classified in Mining, Industry 1381.

Drilling water wells—contractorsServicing water wells—contractors
Geothermal drilling—contractorsWell drilling, water: except oil or gas field water intake—contractors
Codes Titles Number of US Businesses
1781Water Well Drilling5,932
178100Water well drilling5,423
17810000Water well drilling5,423
178199Water well drilling, nec509
17819901Geothermal drilling125
17819902Servicing, water wells384