Each board of health shall, annually, subject to Section 21 of this Act, on or before August 1 of each year, transmit to the county clerk of the county in which the public health district is located a certificate signed by the chairman and treasurer, setting forth the rate or percentage of the taxes by them levied for the purposes herein provided and the county clerk to whom the certificate shall be transmitted shall set down in the general tax warrant of the year for the collection of the State and county taxes, in a separate column to be styled a “public health tax,” a tax in amount equal to the sum resulting from the rate or percentage so certified by the board of health upon the real and personal property within the health district according to the valuation of the same as made for the purpose of State and county taxation; and shall set down in each column the amount of tax chargeable to the several persons, corporations, lots or parcels of land, liable for taxes in the public health district according to such rate or percentage, and the collector shall proceed to collect the same in such manner as is now, or may hereafter be provided by law for the collection of State and county taxes; and the provisions of law in respect to collection of State and county taxes, and proceedings to enforce the same, which are now enforced, or which may be hereafter enacted, so far as applicable, shall apply to such taxes; and as fast as such tax shall be collected by the collector or other officer receiving the same, it shall be paid over to the board of health, on the joint order of the chairman and treasurer of the board of health and shall be receipted for by the treasurer. The funds shall be used only for the purposes herein prescribed and shall be disbursed by the treasurer on the joint order of the chairman and secretary. A failure by the board of health to file the certificate with the county clerk in the required time shall not vitiate the assessment.