The Hydro-Jetting Services segmentation by application distinguishes five primary use‑cases that together drive market revenue. Municipal water‑pipe cleaning occupies the largest share, accounting for roughly 35 % of total spend, as cities replace aging infrastructure and comply with stringent discharge standards. Industrial equipment cleaning follows at 25 %, where manufacturers employ hydro‑jetting to remove scale, deposits, and contaminants from heat exchangers, reactors, and conveyor systems, thereby extending asset life and reducing downtime. Oil & gas pipeline maintenance contributes about 20 %, reflecting the sector’s need for high‑velocity water streams to clear paraffin, sand, and corrosion products without compromising pipe integrity. Power‑generation plant cleaning represents 12 %, primarily for cooling‑tower and condenser tube upkeep, where fouling directly impacts thermal efficiency. The residual Other category (8 %) captures niche activities such as marine hull cleaning and wastewater‑treatment plant servicing, each adding incremental value to the overall Hydro‑Jetting Services market size.