Builders to prove that new housing developments will not cause pollution to nearby rivers. our political correspondent reports. building new homes while protecting the environment. that is the balance of the government wants to strike in relaxing the rules on pollution of waterways. eu laws require proof in some areas of england that new housing developments wouldn t increase harmful nutrient levels in nearby rivers and wetlands. ministers argue it has held up home building that is badly needed. under pressure to meet promises made in the last election, the prime minister said scrapping the rules would mean a significant increase in housing supply. today s announcement will unlock 100,000 new homes in communities where people want those homes to be built. that is fantastic for young, first time buyers. it also will provide an £18 billion boost to our economy and support tens of thousands ofjobs. but while ministers promise to tackle pollution, environmental campaigners are outraged. t