The Obama administration is about to unveil an ambitious — and hotly disputed — plan to strengthen its authority over minor water bodies like wetlands, streams and ponds.
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The Environmental Protection Agency’s (EPA) “waters of the United States” regulation, expected to be issued in the coming days, has become one of the most controversial environmental regulations of the Obama presidency, with some of the strongest lobbying forces in Washington staking out positions.

The rule dubbed WOTUS in environmental and business circles could indelibly change how the federal government fights pollution and protects water for drinking, navigation, wildlife and other uses under the 1972 Clean Water Act.