The ISO form CP 10 30 10 12 Discharge From Sewer, Drain or Sump (Not Flood-Related) can be added to the following policies: Building and Personal Property Coverage Form, Business Income(and Extra Expense), Business Income (Without Extra Expense), Condominium Association Cocverage Form, Condominium Commercial Unit-owners Coverage Form, Extra Expense Coverage Form, and Tobacco Sales Warehouses Coverage Form.