Freshwater pollution

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)

An aerial shot shows widespread destruction caused by Cyclone Kenneth when it struck Ibo island north of Pemba city in Mozambique, Wednesday, May, 1, 2019. The government has said more than 40 people have died after the cyclone made landfall on Thursday, and the humanitarian situation in Pemba and other areas is dire. More than 22 inches (55 centimeters) of rain have fallen in Pemba since Kenneth arrived just six weeks after Cyclone Idai tore into central Mozambique. (AP Photo/Tsvangirayi Mukwazhi)

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)

FILE - In this Sunday, Dec. 14, 2008 file photo, Italian solo rower Alex Bellini arrives at the Opera House in Sydney, Australia. Italian explorer Alex Bellini plans to travel down the world’s 10 most polluted rivers on make-shift rafts, tracing the routes of plastics that pollute the world’s oceans. Bellini said Thursday April 4, 2019 that he was inspired by a 2018 study by a German scientist that found 80% of plastic in the oceans arrives from just 10 rivers. (AP Photo/Rob Griffith, File)

In this photo taken Thursday, March 28, 2019, Anne Vierra,with the town of Paradise, takes payment for the first building permit since the Camp Fire as Jason and Meagann Buzzard plan to rebuild their home in Paradise, Calif. Small signs of rebuilding a Northern California town destroyed by wildfire are sprouting this spring, including the issuing of the first permit to rebuild one of the 11,000 homes destroyed in Paradise five months ago. A city hall clerk on Thursday issued the couple a building permit to replace their home destroyed by the Nov. 8 fire that killed 85 people. The couple told reporters they never thought about leaving. Paradise Mayor Jody Jones said the Buzzards' permit is a sign that the town will rebuild.(Hector Amezcua/The Sacramento Bee via AP)

Larry Poell, who lives on top of a Superfund site in Mead, Neb., adjusts Wednesday, March 27, 2019, the overalls of his granddaughter, while visiting a flood relief shelter in Ashland. Poell said federal officials have always maintained that the contaminated plumes are stable, but he wonders if the floodwater caused them to shift. "I'm concerned about it, I think everybody's concerned about it," he said. (AP Photo/Nati Harnik)

FILE - In this June 25, 1952 file photo, a fire tug fights flames on the Cuyahoga River near downtown Cleveland. Federal environmental regulators say fish living in the northeastern Ohio river are now safe to eat. The easing of fish consumption restrictions on the Cuyahoga River was lauded by Republican Gov. Mike DeWine as progress achieved by investing in water quality.(The Plain Dealer via AP)

An island of solar panels floats in a pond at the Los Bronces mining plant, about 65 kilometers (approximately 40 miles) from Santiago, Chile, Thursday, March 14, 2019. The island of solar panels could give purpose to mine refuse in Chile by using them to generate clean energy and reduce water evaporation.(AP Photo / Esteban Felix)

FILE - This Aug. 7, 2014, image 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. After excavating thousands of tons of soil and treating millions of gallons of water, New Mexico regulators say the U.S. Air Force still has work to do to clean up the contamination. (AP Photo/Susan Montoya Bryan)