The exterior of the Newtown Creek Wastewater Treatment Plant is seen in the Greenpoint neighborhood of Brooklyn, New York, January 5, 2020. The plant treats wastewater from more than 1 million people and is the largest of 14 wastewater facilities in New York City. (Robert Nickelsberg / Getty Images)
Samuel Alva, a technical adviser with the Cybersecurity and Infrastructure Security Agency, says aiding thousands of water utilities is a "daunting" task.