Workers' comp class code · Industrial & Other
Class code 6204 — Sewer/Water Main Construction
Installation and repair of underground utility lines.
This classification covers installation and repair of underground utility lines, including sewer mains, water mains, and related infrastructure. Work typically involves excavation, pipe laying, and backfilling, often within active roadways or public rights-of-way.
Crews include equipment operators running excavators and trenchers, pipefitters laying and joining pipe sections, laborers managing trench safety and backfill, and flaggers directing traffic around the work zone. Projects often require coordination with other underground utilities to avoid strikes.
The leading hazards are trench collapse, struck-by incidents from traffic or heavy equipment, and utility strikes on gas, electric, or other buried lines. Trench shoring or sloping, utility locates before digging, and clear traffic control plans are the core safety measures for this high-severity classification.
What code 6204 typically includes
- Excavator and trenching equipment operators
- Pipefitters and pipe-laying crews
- Trench safety and backfill laborers
- Traffic control flaggers and site safety staff
- Utility locating and coordination personnel
Codes this one gets confused with
6306 — Sprinkler Installation — Fire Protection
Fire sprinkler work is installed inside buildings, while this classification covers underground utility trenching outside in roadways and rights-of-way.
See code 63060037-2 — Farm Machinery Operation
Both involve heavy equipment operation, but this classification is construction-based excavation work rather than agricultural field work.
See code 0037-2What this code means for your premium
Underground utility construction is rated among the higher classifications in this group given trench collapse potential and exposure to traffic and buried utility strikes.
Estimate your premiumClassification is not final until a carrier assigns it. Code numbers, wording and exceptions vary by state and rating bureau — several states run their own bureaus. This page is general reference written in our own words; your carrier's underwriter assigns the code based on your actual operations and payroll records.
Questions about code 6204
Ready to see your options?
One application. Up to 10 competing quotes. Answer a few questions and we will shop your business to our A-rated carrier network, then a licensed agent walks you through the options.