Fill out the LEED Online credit form. The total calculated flush-fixture water-use for the baseline and design cases will be automatically generated once the WEp1 credit form is filled out. You will need to provide information on the blackwater source (toilet or urinal), annual quantity treated, annual quantity infiltrated onsite, annual quantity reused onsite, and plumbing drawings or other documents that detail information about the onsite treatment, infiltration, and reuse capabilities of your project.