2026 Reading Challenge

Join the Goodreads Author Program

Are you O'Brien Mahony, author of the books below?
The Presence of Organic Matter in Potable Water Always Delete... by O'Brien Mahony “Collector’s Edition” The presence of organic matter in potab... by O'Brien Mahony The Presence of Organic Matter in Potable Water Always Delete... by O'Brien Mahony The Presence of Organic Matter in Potable Water Always Delete... by O'Brien Mahony


To join the author program as O'Brien Mahony, you will first need to sign in to Goodreads. Then navigate back to this page to apply.


About the Author Program
Authors on Goodreads
Author Guidelines
Author Program How-To
Author & Advertisers Blog
Ask the Author: Featured Authors
About Goodreads