The Northern Kentucky Water District (NKWD) recently initiated a corrosion control treatment (CCT) desktop study to proactively ensure that our water chemistry is optimized with regards to pipe corrosion. This presentation will delve into the aspects of the CCT study and the specific experience of NKWD. Topics addressed will include: •Introductory discussion of corrosion control treatment (CCT) in drinking water production, especially in relation to the Lead and Copper Rules. •Common elements of a desktop corrosion control study and resources (e.g. EPA, state, and industry publications) that are available to consider when drafting a project scope. •Contractor assistance and the request for proposals (RFP) solicitation process for this project. •Data utilized in the study and the decisions water producers can make to collect extra data in preparation for CCT studies at their utilities. •Lead service line harvesting and advanced scale analysis as an optional step to “ground truth” the study. •Unique study considerations for NKWD’s system with three treatment plants that vary both in their source water and treatment train. •A budget-level discussion of costs for study services based on NKWD’s experience. The result of each desktop corrosion control study is unique to the water chemistry of the utility conducting it, so the talk will focus on the design and execution of studies in general, using this study to illustrate points, rather than diving too deeply into the detailed results of NKWD’s study. That way utility representatives in attendance can take away information that is valuable to their systems and are not tempted to generalize the specific results NKWD learned to their own plants, where water chemistry will certainly be different. The talk will conclude with a discussion of next steps planned at NKWD, including a pipe rig study using harvested lead service lines and frames purchased from another regional utility.