The fuel contamination of Iqaluit’s water supply left people asking a lot of questions, not least of which was — how did it get there in the first place? Answering this question was one requirement among a longer list of must-dos before the territory’s chief public health officer, Dr. Michael Patterson, would consider telling people the city’s water was safe to drink again after diesel fuel was detected in the city’s water system in October. Patterson did lift the do-not-consume water advisory on Dec. 10, nearly two months after it was imposed on Oct. 12. The original suspect was a crack in one of two underground holding tanks at Iqaluit’s water treatment plant, where water sits in chlorine before moving into a treated reservoir, called the North Clear well.