Fragrant Water Lily?

Identifying specimens can be pretty hectic some times. It was really so when I tried to determine the identity of this aquatic plant which is very common in Sri Lanka. The same plant was describe by some as Fragrant Water Lily (Nymphaea odorata) and White Lotus  (Nymphaea lotus) by others online! Any way I believe this to be Fragrant Water Lily, and if it is, it must probably have been introduced during the colonial times.