Water is a hazard in the de Blob series.
In de Blob, it will whitewash Blob of his color and will bring paint points down until it gets to 10. In de Blob 2, it will whitewash Blob, but paint points are only lost if B is pressed. Water can be found in many places like fountains, lakes, and hydrants. In this game, however, water can be useful to sneak past Inkies.
A trap similar to water, introduced in de Blob 2, is called a White Tile.