A. The district, when necessary for the purposes of this act, shall have a dominant right of eminent domain over the right of eminent domain of private or public corportions [corporations].
B. In the exercise of this right, due care shall be taken to do no unnecessary damage to others, and, in case of failure to agree upon the mode and terms of interference, not to interfere with their operations or usefulness beyond the actual necessities of the case, due regard being given to other public interest [interests] involved.