Growing up on the Passamaquoddy Tribe’s reservation, Cyril Francis knew to never drink the water.It was obvious when the water ran tan or even muddy brown, reminiscent of the bottom of Boyden Lake, the source of the Passamaquoddy Water District. But even when it runs clear and after millions of dollars of investment into a treatment facility, Francis, 63, said she does not use the local water except for showering, laundry and sometimes dishes. Even that comes with unsettling issues, as Francis found out during a recent doctor’s appointment.