The board of trustees of any special improvement district, the lands within which are obligated to repay a loan or loans from the United States under any loan repayment contract made between the district and the United States pursuant to Article 3 (commencing with Section 74610) of Chapter 5 of Part 5, shall be charged with the responsibility of performing or causing the performance of all obligations of the district and of the special improvement district under such contract. If, in the opinion of the board of directors, the board of trustees fails to adequately maintain and operate the waterworks facilities of the special improvement district constructed pursuant to such contract, or otherwise fails to perform or cause the performance of the obligations under such contract, the board of directors shall give the board of trustees written notice specifying the respect in which the board of trustees has failed, and in the event the board of trustees fails to cure such default within a reasonable time fixed in the notice following the giving of such notice, the board of directors may, upon giving at leasty thirty (30) days’ written notice to the board of trustees, take over the care, operation and maintenance of such waterworks and thereafter care for and operate and maintain the same and perform or cause the performance of such obligations.