The board of directors of a sanitary district may enter into contracts or other arrangements with the United States government or any department thereof, with persons, railroads, or other corporations, with public corporations, and with the state government of this or other states, with sewerage, drainage, conservation, conservancy, or other improvement districts, in this or other states, for cooperation or assistance in constructing, maintaining, using, operating, and financing the works of the district or the waters thereof, not in violation of Article VIII, Ohio Constitution, or for making surveys and investigations or reports thereon. The board may purchase, lease, or acquire land or other property in adjoining states to secure outlets or for other purposes of this chapter, and may let contracts or spend money for securing such outlets or other works in adjoining states.