When you must pay your assessment

All assessments so made shall be due and payable within thirty (30) days after the date of the last publication of the ordinance; provided that any assessment may, at the election of the owner of the land assessed, be paid in installments with interest, as hereinafter provided. Failure to pay the whole of any assessment within the period of thirty (30) days shall be conclusively considered and held an election on the part of all persons interested in such assessments, whether under disability or otherwise, to pay in installments. All persons so electing to pay in installments shall be conclusively considered and held to have consented to the improvement and such election shall be conclusively held and considered as a waiver of any and all right to question all power or jurisdiction of the County to make the improvement, the regularity or the sufficiency of the proceedings or the validity or correctness of the assessment; provided, however, that such waiver shall not apply to any person who has properly filed an action in court, challenging the power or jurisdiction of the County to make the improvement, within thirty (30) days after the passage of the ordinance fixing the assessments.