The governing body of any municipality shall have power to cause a general sewer system to be established, which shall be composed of four classes of sewers, to wit: public, district, joint district, and private sewers. Public sewers shall be established, along the principal courses of drainage, at such time, to such extent, of such dimensions, and under such regulations as may be provided by ordinance. These may be extensions or branches of sewers already constructed or entirely new throughout, as may be deemed expedient. The municipality may levy a tax on all property made taxable for state purposes over the whole municipality to pay for the constructing, reconstructing and repairing of the work, which tax shall be called “special public sewer tax” and shall be of the amount as may be required for the sewer provided by ordinance to be built; and the fund arising from the tax shall be appropriated solely to the constructing, reconstructing and repairing of the sewer.