The New York City Water Purification System Waystation  is a central way-station that treats and purifies all of New York City's ocean-bound water. It is located in the East River, south of Houston Street.
Once the Dry Spell Spirit escaped from the Maritime Research Center, it made its way to the Lower East Side through the water purification system. The Extreme Ghostbusters arrived and rerouted two of the three inlets into one reservoir so the ghost would be forced to use the third as an exit into the ocean. Eduardo Rivera volunteered himself as bait and stood in the water for 20 minutes. Sure enough, the ghost attacked Eduardo but François Rousseau interfered and tried to take the ghost for himself. Once Rousseau fell victim to the ghost, it was trapped.