This powerpoint presentation begins by providing a brief overview of the need for optimization of water systems from source to tap. Partnership for Safe Water (PSW) has made considerable progress with optimization of surface water supplies. The project objective was to develop a PSW-like distribution system self-assessment optimization program that is widely useful, with easily measurable criteria and minimal capital expenditures. The Optimization Pyramid is presented, along with an overview of the 4109 approach that included the following: literature review; utility questionnaire; expert workgroups; draft optimization criteria (Steps 1&2); beta review - Part 1 review by full workgroup, practical and feasible; beta review - Part 2 detailed review/application by individual utilities; expert workshop; software development; and, final DOSAC document.