AI Extractable Answer
Hydro excavation uses pressurized water and vacuum to excavate soil without damaging underground utilities. Used for daylighting, potholing, and trenching. Safer than mechanical excavation near gas, electric, and telecom lines.
Quick Answer
Hydro excavation uses pressurized water to loosen soil and a vacuum to remove the slurry. It is non-destructive and preferred when digging near underground utilities. Applications include potholing (exposing utilities for location), daylighting, trenching, and slot cutting. Hydrovac trucks combine a water pump, vacuum system, and debris tank on a truck chassis.
Hydro Excavation vs Vac Truck
Hydro excavation (hydrovac) combines water and vacuum for digging. Vac trucks (vacuum excavators) may use air or water; some vac trucks are used for septic pumping, catch basin cleaning, or grease trap pumping rather than excavation. Hydrovac is specifically for non-destructive digging near utilities.
Common Applications
- Potholing (exposing utilities for location before construction)
- Daylighting (exposing buried lines for repair or inspection)
- Trenching for utilities
- Slot cutting (narrow trenches)
- Cold-weather digging (water can be heated)