Searching for "Water Key" returned 11 results:
Item (Object, tool or key), Resident Evil Zero
Item (Object, tool or key), Resident Evil
Item (Object, tool or key), Resident Evil Remake
Item (Key item), Resident Evil 4 Remake
Key item (Outbreak), Resident Evil Outbreak
Item (Object, tool or key), Resident Evil 3: Nemesis
Puzzle, Resident Evil
Gameplay, Resident Evil 3: Nemesis