"A potentially harmful algae bloom covered more than 700 square miles in the western basin of Lake Erie last week, turning the lake bright green and alarming residents and local officials."

"A new study says small patches of native prairie plants provide a range of conservation benefits to Iowa’s landscape and could reduce water pollution from farm fields."

"State and federal environmental agencies report Harvey knocked out five drinking-water systems and seven sewage systems in the 58 Texas counties covered by Gov. Greg Abbott's disaster declaration."

"State and federal environmental agencies report Harvey knocked out five drinking-water systems and seven sewage systems in the 58 Texas counties covered by Gov. Greg Abbott's disaster declaration."

"The Arkema chemical plant — already facing multiple lawsuits over explosions of a volatile chemical in the aftermath of Hurricane Harvey — is under criminal investigation by the Harris County District Attorney’s Office, officials confirmed Friday."

"Cancer-causing dioxins leached from a Superfund site along a Texas river during Hurricane Harvey flooding, the U.S. Environmental Protection Agency said, triggering calls on Friday for the toxic waste to be permanently moved."

"Maryland Attorney General Brian Frosh (D) sued the Trump administration Wednesday to try to force it to take action against out-of-state power plants for their air pollution."

"Long before the Trump administration rescinded a ban on the sale of disposable water bottles in select national parks, the Interior Department was aware of a report from the National Park Service that the program worked."

A new technology for coating the inside of lead service pipes could save homeowners money and make expensive replacement unnecessary. It is being tested.

"Scott Pruitt, the Environmental Protection Agency administrator who has aggressively pushed to dismantle regulations and downsize the organization, is threatening to reach outside his agency and undermine the Justice Department’s work enforcing antipollution laws, documents and interviews show."