Loans may be approved by the Governor from available public or trust funds to any person for the installation of sanitary facilities as required in this chapter, to be repaid in monthly or quarterly installments within 10 years with simple interest at the rate of 4 per centum per annum. The applicant for such a loan shall produce satisfactory proof that he is unable, because of lack of means, to comply with the provisions of this chapter. Such loans shall be secured by a lien on the property in which the sanitary facilities are installed, or on any other real property in the Virgin Islands. Loans may be made with security in a superficiary house in which the sanitary facilities covered by the loan have been installed, provided the owner of such superficiary house has a satisfactory lease for the land on which it rests and which lease extends throughout the term of the loan.