Freshwater pollution

FILE - In this Jan. 25, 2017 file photo, heavy equipment is used at an ash storage site at Gallatin Fossil Plant in Gallatin, Tenn. The nation’s largest public utility has agreed to dig up and remove about 12 million cubic yards of coal ash from unlined pits at Gallatin Fossil Plant. In a Thursday, June 13, 2019 settlement, the Tennessee Valley Authority says it will excavate a majority of coal ash at its Gallatin Fossil Plant. .(AP Photo/Mark Humphrey, File)

Environmental Protection Agency Administrator Andrew Wheeler speaks at the National Press Club in Washington, Monday, June 3, 2019. The Food and Drug Administration's first broad testing of food for a worrisome class of nonstick, stain-resistant industrial compounds found high levels in some grocery store meats and seafood and in off-the-shelf chocolate cake. (AP Photo/Andrew Harnik)

FILE - This Aug. 7, 2014, file photo, shows a contract employee watching a crews excavate contaminated soil at a site where millions of gallons of jet fuel leaked underground over decades at Kirtland Air Force Base in Albuquerque, N.M. A coalition of state lawmakers and nonprofit groups took the first step toward suing the U.S. Air Force on Friday, May 31, 2019, saying it wants firm deadlines for cleaning up jet fuel contamination at a base bordering New Mexico's largest city. The coalition filed a notice of intent to sue, saying the contamination at Kirtland Air Force Base near Albuquerque is a danger to public health and the environment. It wants an agreement that sets a cleanup schedule with clear deadlines and penalties. (AP Photo/Susan Montoya Bryan, File)

FILE - In this Monday, April 11, 2016 file photo, New Hampshire state and local officials load boxes of free bottled water in in Litchfield, N.H. New Hampshire is suing eight companies including 3M and Dupont for damage it says has been caused statewide by a class of potentially toxic chemicals found in everything from pizza boxes to fast-food wrappers. The state becomes the second in the nation to go after the makers of perfluoroalkyl and polyfluoroalkyl substances or PFAS and the first to target statewide contamination. (AP Photo/Jim Cole, File)

Scientists say water clarity has rebounded from an all-time low in 2017 at Lake Tahoe, pictured in this photo taken from an airplane departing from Reno, Nev. on March 2, 2017. UC Davis researches said on Thursday, May 23, 2019 that Last year's reading improved about 10 feet from the previous year and is now in line with the most recent five-year average. (AP Photo/Scott Sonner)

In this April 8, 2019, photo, Tim Tanksley, who has been fighting for years trying to convince Oklahoma lawmakers to crack down on the coal ash dumping, stands outside a dump site in Bokoshe, Okla. President Donald Trump’s EPA has approved Oklahoma to be the first state to take over permitting and enforcement on coal-ash sites. “They’re going to do absolutely nothing,” Tanksley said. (AP Photo/Sue Ogrocki)

Cyprus Special Disaster Response Unit carry a suitcase after it was retrieved from a man-made lake near the village of Mitsero outside of the capital Nicosia, Cyprus, Sunday, May 5, 2019. Cyprus police spokesman Andreas Angelides says investigators hunting for bodies dumped by a suspected serial killer pulled a suitcase containing decomposing human remains from a toxic lake. (AP Photo/Petros Karadjias)

FILE - In this Dec. 3, 2018, file photo, trees reflect in a swimming pool outside Erica Hail's Paradise, Calif., home, which burned during the Camp Fire. Water officials say the drinking water in Paradise, which was decimated by a wildfire last year, is contaminated with the cancer-causing chemical benzene. Fixing the problem could cost $300 million and take up to two years. The Sacramento Bee reports Thursday, April 18, 2019, experts believe the extreme heat of the November firestorm created a "toxic cocktail" of gases in burning homes that was sucked into water pipes when the system depressurized. (AP Photo/Noah Berger, File)