Actually, the water effect is based on an 8x8 surface. Any brick that isn't a multiple of 8 in every direction - or that isn't using strictly 8x8 surfaces, for instead the 32x32 is actually a 4x4 grid of 8x8 areas - won't line up with the water effect at all.
An 8x8x1 brick is possible, for puddles and what-have-you, but any brick that isn't 8x8 or some multiplication of it won't line up.