SIC 1781 — Water Well Drilling
Description & Classification
SIC code 1781 representing 'Water Well Drilling' is an industry category in the Standard Industrial Classification (SIC) system under U.S. OSHA and Federal procurement registers.
Modern NAICS Crosswalk
Trace the modern equivalent classifications in the 2022 North American Industry Classification System (NAICS) database:
- NAICS 237110 - Water and Sewer Line and Related Structures Construction (via SIC1987:1781→NAICS1997:23581→2002:237110→2007:237110→2012:237110→2017:237110→2022:237110)
Classification Details
| SIC Code | 1781 |
|---|---|
| Industry Title | Water Well Drilling |
| Division | Division C: Construction |
| Major Group | Major Group 17: Construction - Special Trade Contractors |
| Source / Verified | US Census 1987 SIC Concordance / 2026-06-28 |
Related Resources & Compliance Guides
Further regulatory reference links for legacy SIC code 1781:
- SIC Codes Complete Compliance Guide — Detailed history and active legal applications of the SIC classification framework.
- Why Legacy SIC Codes Persist Guide — How credit systems and the SEC still rely on SIC metadata.
- SIC ↔ NAICS Crosswalk Tool — Trace industrial code conversions dynamically.
- SIC Major Group 17 Hub — View other legacy industries in this business division.
Related Industries in Major Group 17
Frequently Asked Questions (FAQ)
What industry does SIC code 1781 represent?
SIC 1781 is 'Water Well Drilling', a 4-digit Standard Industrial Classification (SIC) code under Major Group 17: Construction - Special Trade Contractors (Division C: Construction); it maps to modern 2022 NAICS code(s): 237110 (Water and Sewer Line and Related Structures Construction).
What is the modern 2022 NAICS mapping for SIC 1781?
SIC code 1781 maps to modern NAICS codes: 237110 - Water and Sewer Line and Related Structures Construction.