Externals of water treatment tanks require protection against corrosion (or spalling, in the case of concrete tanks) and UV radiation. Water treatment tanks are usually painted in a dark green to help the tank "blend in" visually with the environment.
Exterior: 1 x DULUX Zincanode® 402 @ 75 μm
Exterior: 1 x DULUX Durebild® STE @ 150 µm
Exterior: 1 x DULUX Weathermax® HBR @ 80 µm