Paper ID: C2025-00383 ABSTRACT: Here we examine a brief history of the engineering of water tank corrosion protection and lining systems. The author also presents a technical review of the two most specified primer types in the modern potable water tank building industry: solvent borne epoxies and moisture cured urethane zinc primers. Engineering, application, and cost considerations are examined in detail. The author seeks to inform the reader with an in-depth holistic approach to immersion primer selection with a focus on polyamide epoxy primers and moisture cured urethane zinc primers.