WATERBORO — The town of Waterboro has closed its public library because of a persistent bad odor and several code violations, including asbestos wall coverings.

Town Administrator Gary Lamb says the library, housed in an old school built nearly a century ago, was closed last week by the town’s code enforcement officer.

The source of the odor, sometimes described as a sewer-type smell, has been a mystery for at least a decade and some suspect it has something to do with the septic system.

Librarian Ruth Blake and Brigit McCallum, president of the library’s trustees, told The Journal Tribune that sometimes there’s no odor and at others times it is pronounced.

Asbestos was removed several years ago and McCallum says she was unaware of the new asbestos issue.