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Construction on the Atotonilco wastewater plant in Mexico.

Pre-K - Higher Ed
Construction on the Atotonilco wastewater plant in Mexico.
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Wastewater holding tanks at treatment plant in Tepoztlan, Mexico.

Pre-K - Higher Ed
Wastewater holding tanks at treatment plant in Tepoztlan, Mexico.
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Aerial view of holding tanks at Atotonilco wastewater treatment plant in Tepoztlan, Mexico.

Pre-K - Higher Ed
Aerial view of holding tanks at Atotonilco wastewater treatment plant in Tepoztlan, Mexico.
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Wastewater holding tanks at treatment plant in the Valley of Mexico.

Pre-K - Higher Ed
Wastewater holding tanks at treatment plant in the Valley of Mexico.
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Expansion of the Atotonilco wastewater treatment plant in The Valley of Mexico.

Pre-K - Higher Ed
Expansion of the Atotonilco wastewater treatment plant in The Valley of Mexico.
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View of wastewater treatment facility under construction in Tepoztlan, Mexico.

Pre-K - Higher Ed
View of wastewater treatment facility under construction in Tepoztlan, Mexico.
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Construction workers building the Atotonilco wastewater plant in Mexico.

Pre-K - Higher Ed
Construction workers building the Atotonilco wastewater plant in Mexico.
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View of construction on the Atotonilco wastewater plant in Mexico.

Pre-K - Higher Ed
View of construction on the Atotonilco wastewater plant in Mexico.
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Polluted water running through canal at wastewater plant in Tepoztlan, Mexico.

Pre-K - Higher Ed
Polluted water running through canal at wastewater plant in Tepoztlan, Mexico.
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View of expansion of the Atotonilco wastewater plant in Tepoztlan, Mexico.

Pre-K - Higher Ed
View of expansion of the Atotonilco wastewater plant in Tepoztlan, Mexico.
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Aerial view of construction on the Atotonilco wastewater plant in Mexico.

Pre-K - Higher Ed
Aerial view of construction on the Atotonilco wastewater plant in Mexico.
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Aerial view of men working on the holding tanks in a water treatment plant in Tepoztlan, Mexico.

Pre-K - Higher Ed
Aerial view of men working on the holding tanks in a water treatment plant in Tepoztlan, Mexico.
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View of holding tanks under construction in water treatment plant in Valley of Mexico.

Pre-K - Higher Ed
View of holding tanks under construction in water treatment plant in Valley of Mexico.
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Aerial view of the shoreline of Lake Nabor Carrillo.

Pre-K - Higher Ed
Aerial view of the shoreline of Lake Nabor Carrillo.
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Leaving the city of Chimalhuacan then crossing the blue green waters of Lake Nabor Carrillo in the Valley of Mexico.

Pre-K - Higher Ed
Leaving the city of Chimalhuacan then crossing the blue green waters of Lake Nabor Carrillo in the Valley of Mexico.
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View of the salt marshes in the Valley of Mexico.

Pre-K - Higher Ed
View of the salt marshes in the Valley of Mexico.
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City of Chimalhuacan and Lake Nabor Carrillo in The Valley of Mexico.

Pre-K - Higher Ed
City of Chimalhuacan and Lake Nabor Carrillo in The Valley of Mexico.
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Holding tanks at Atotonilco wastewater treatment plant in Tepoztlan, Mexico.

Pre-K - Higher Ed
Holding tanks at Atotonilco wastewater treatment plant in Tepoztlan, Mexico.
Stock Footage1:02
Getty Images

Expansion of the Atotonilco wastewater treatment plant in the Valley of Mexico.

Pre-K - Higher Ed
Expansion of the Atotonilco wastewater treatment plant in the Valley of Mexico.