Sec. 19. Appeal on assessment. A person aggrieved by a decision of the trustees as it relates to an assessment for sewer construction has the same rights of appeal as are provided in the case of laying out town ways.

Sec. 20. Lien for unpaid assessments. All assessments create a lien upon each lot or parcel of land so assessed and the buildings upon the same. The lien takes effect when the trustees file with the clerk of the district the completed assessment and continues for one year thereafter. Within 10 days after the date of hearing on the assessment, the clerk of the district shall make out a list of all assessments, the amount of each and the names of the persons against whom those assessments are assessed, and the clerk shall certify the list and deliver it to the treasurer of the district. If the assessments are not paid within 3 months from the date of notice, the treasurer may bring a civil action for the collection of the assessments in the name of the district against the persons against whom the assessments are made and for the enforcement of the liens. The complaint in an action must contain a statement of the assessment, a description of the real estate against which the assessment is made and an allegation that a lien is claimed on the real estate to secure the payment of the assessment. If no service is made upon the defendant or it appears that another person is