Wellington Water soldiered on with a faulty piece of equipment for four years before overdosing a batch of drinking water with fluoride then having to drain the tank and stop fluoridating the city’s water. “I’m just floored” said Wellington City councillor Sean Rush, who chairs the infrastructure committee, is the council’s liaison with Wellington Water, but only found out about the faulty equipment and overdosing in the past week. He believed he “absolutely” should have been told earlier. Wellington Water has commissioned an independent inquiry into its fluoride debacle that saw Te Marua wate…