Indah Water Konsortium Sdn Bhd (IWK) has denied the allegation by an anti-corruption watchdog that the firm's sewerage system in Langkawi is mismanaged.

The nation's sewage services operator took the Center to Combat Corruption and Cronyism (C4) to task for statements it made on March 19 which it said contradicted C4's report highlighting issues of governance, environment, corruption, smuggling and other abuses said to be occurring on the island.

During the launch of its report "Langkawi (Good Governance, The Pillar to a Successful Tourism Industry)”, C4 cited alleged mismanagement of the IWK sewerage system had resulted in the occasional discharge of waste into the sea.