Section 27(iii) in The Chennai Metropolitan Water Supply and Sewerage Service Charges (Levy and Collection) Regulations, 1998
(iii)In addition to clause 27(i) and (ii) the Board shall levy surcharge at the rates specified from time to time for the belated payment of water supply and sewerage service charges. Present rate of surcharge is 1.5% p.m. for domestic flat rate and metered consumers and 20% p.m. for other category of consumers including metered consumers.
