The South Korean government is planning to charge an additional 100 won per ton of tap water to fund a project to improve the quality of potable water as early as next year. The ruling coalition and the government agreed on the additional charges to households in Seoul and Inchon when they met to coordinate policy yesterday. An official of the National Congress for New Politics (NCNP) said the government is planning to raise 400 billion won each year to improve the quality of water piped in from a stretch of the Han River upstream from Seoul.