With the rapid growth of population, the perennially thirsty national Capital will have to suffer if water-related projects remain choked with red tape. The Rs 800 crore Sonia Vihar Water Treatment Plant, which was to be commissioned in 2001, is gathering dust. The much-hyped Dwarka, Bawana and Okhla water treatment plants are hardly used since the Munak Canal project, which was supposed to bring raw water from Haryana, has now gone underground.