Hydro-blasting is commonly known as water blasting. This is commonly used because it usually requires only one operator. In hydro-blasting, a highly pressured stream of water is used to remove paint, chemicals and algae without damaging the surface. This method is ideal for cleaning internal and external surfaces because the operator is generally able to send the stream of water into places that are difficult to reach using other methods. Another benefit of hydro-blasting is the less consumption of water and environmental friendly.