(a) If any person fails to pay any tax, or fails to pay any water or sanitation charges within thirty days after the due date, the collector or the collector's duly appointed agent shall make personal demand of such person therefor or leave written demand at such person's usual place of abode or deposit in some post office a written demand for such tax or such water or sanitation charges, postage prepaid, addressed to such person at such person's last-known place of residence unless, after making reasonable efforts, the assessor is unable to identify the owner or persons responsible. If such person is a corporation, limited partnership or other legal entity, such written demand may be sent to any person upon whom process may be served to initiate a civil action against such corporation, limited partnership or entity.
(b) After demand has been made in the manner provided in subsection (a) of this section, the collector for the municipality, alone or jointly with the collector of any other municipality owed taxes by such person, may (1) levy for any unpaid tax or any unpaid water or sanitation charges on any goods and chattels of such person and post and sell such goods and chattels in the manner provided in case of executions, or (2) enforce by levy and sale any lien or warrant upon real estate for any unpaid tax or levy upon and sell such interest of such person in any real estate as exists at the date of the levy for such tax.
(c) For the purposes of this section, “water or sanitation charges” means (1) any rates or charges established pursuant to section 7-239 , or (2) any charges imposed by a municipality for the collection and disposal of garbage, trash, rubbish, waste material and ashes.