Polluted water

In Pikmin X: Deep Freeze
Polluted water is a hazard in Pikmin X: Deep Freeze that is very similar to regular water, filling pools and rivers in the Defiled Grounds. However, this type of water is a sludgy green and brown, indicating that it is full of pollutants. Polluted water is too toxic for even Blue Pikmin to swim in, and they will drown in it just like any other Pikmin type; in addition, even if they are rescued in time, Pikmin will lose their flowers if they touch polluted water. Leaders will also move much slower in this hazard compared to regular water; this can be nullified if the Anti-Corrosion Armor has been collected.

Polluted water is often found connected to filtration devices that will turn it into regular water, making it relatively safe to touch. Moss Pikmin can also safely walk on top of polluted water by freezing it.