Water material in Unreal Engine 5.2 5.3 5.4 Lumen . Use for fluid geometry imported from Houdini, Maya , Blender, Realflow. Glass / water Shader Tutorial

 

export the fluid cache as single alembic. make sure it has no polygon with more than 4 sides. 

you can use @numvtx>4 in a houdini group expression node to figure out such polygons and triangulate them. unreal does not import geometry with polygons that has more than 4 sides. either triangles or quads accepted.

Water look example : 

1. Lumen On

 2. Forward Shading Off

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7.  add thin translucent material node manually if its not automatically added.

8. turn on refraction from None to IOR