Ala. Code § 11-50-83

The owners of any real estate or any interest therein which it is proposed to assess for the cost or any part thereof of said sewer or sewers or sewer system, may appear at any time on or before the date named in the notice provided for in Section 11-50-81 or at the meeting mentioned therein and file in writing with the clerk or in his office any objections or defense to the proposed assessment against said property or to the amount thereof. Persons who do not file objections in writing or protests against such assessment on or before the date named in said notice shall be held to have consented to the same.