I'd like to know more about this also. I need to keep water in a basement out, not in The moisture is keeping me from storing more preps down there.Can you give us more information, such as the size and who the manufacturer of damtight is. What is the base of your cistern?
One word: bulletsAnyone know any good places to pick up a water cistern? I like those big galvanized steel 1200 gallon ones. It'll be put in above ground to capture rain water off the roof and used for irrigation and livestock.