even though water use and nutrient pollution are increasing at much faster pace outside the oecd area particularly in the briics diffuse sources of pollution seasonal or local water shortage and floods remain an issue in most oecd countries as is financing to replace ageing infrastructure and meet increasingly stringent environmental and health standards the problem will be greatest in nonoecd countries that as a group are expected to have much larger rates of population growth this is particularly so in large developing countries such as india where the rate of increase in incomes is also expected to exceed the oecd average