The detachment order so entered shall not operate to abate, or to release the lien of, any assessment previously levied against the lands detached or to relieve such lands from liability for assessment by the drainage district for the purpose of paying indebtedness or obligations of the drainage district outstanding at the time of detachment. Immediately upon the entry of the detachment order, all drains, levees, drainage structures and easements of the drainage district in the detached area shall become the property of the municipal corporation without the payment of compensation therefor, and the municipal corporation shall thereafter be charged with the duty of keeping such property in repair.
70 ILCS 605/8-20