Section 17 in The Chennai Metropolitan Water Supply and Sewerage Board's Water Tax and Sewerage Tax (Levy and Collection) Regulations, 1991
17. Assessments shall normally be revised once in five years.
- For this purpose the authorised authority may with the approval of the Board arrange the territorial divisions of the city in such groups as may be considered necessary and revise the assessment books relating to each group by rotation once in five years.
