In a large bowl, cream butter and sugars until light and fluffy. Add eggs, one at a time, beating well after each addition. Beat in water and vanilla. Combine the oats, flour, salt, cinnamon and baking soda; gradually add to creamed mixture and mix well. (Transfer to a larger bowl if necessary.) Stir in the raisins, chocolate chips, walnuts and coconut.
Drop by tablespoonfuls 2 in. apart onto ungreased baking sheets. Bake at 350° for 12-14 minutes or until lightly browned. Remove to wire racks to cool.