Phoenix, Arizona, the “beautiful city,” is the second-most populated city in the United States, with a population of more than 18 million people.
However, Phoenix is one of the most polluted cities in the world, and is the world’s most polluted city with its air and water quality being among the worst in the region.
While Phoenix has been the subject of much attention in recent years, its pollution has not been limited to the city.
Phoenix’s air and wastewater quality has also been deemed the most unhealthy in the country by the World Health Organization.
The city’s pollution is caused by its polluted sewage system, which allows waste from the city to seep into the groundwater.
The system is one major contributor to the toxic levels of lead and cadmium in the groundwater, and in recent months, the Environmental Protection Agency (EPA) has reported a spike in lead levels in the city’s water supply, according to the AP.
The EPA is currently investigating whether the city has violated the Clean Water Act.
In 2017, the EPA reported that nearly 1,000 people in Phoenix were diagnosed with lead poisoning.
“I think that this was a real wake-up call for people that if we can’t do something about it, then we can do nothing about it,” said Daniele DePaula, a member of the Phoenix City Council and the chair of the city council’s environmental committee.
“So, I think this is an opportunity to take a step back and see if we are doing enough to address this problem,” DePaulas added.
Phoenix is the fourth-most polluted city in America.
The state of Arizona, which encompasses Phoenix, has reported more than 3,300 cases of lead poisoning since 2000, according the EPA.
According to the Environmental Working Group, about 30 percent of all Americans are at risk for lead poisoning, and nearly a quarter of those are young people.
More than 200,000 children in Arizona have lead poisoning because of exposure to lead paint.
A 2016 report by the National Institute of Environmental Health Sciences found that lead is one-fifth of all lead in the soil, a factor that can lead to developmental delay, learning difficulties, learning disabilities, learning disability and reduced IQ.
A 2013 study by the Centers for Disease Control and Prevention found that up to 80 percent of children in America live in neighborhoods where lead levels exceed federal health guidelines.
“Lead can have devastating impacts on children’s mental and physical health, and lead exposure is one contributing factor to a wide range of adverse health outcomes in children and adolescents,” said Dr. Mary Ann A. Lees, director of the Center for Environmental Health, in a statement.
Lead poisoning is particularly common among African-Americans, and the prevalence of the disease among children is highest among Latino and African-American children, according CDC.
Lead is also a neurotoxin that can be harmful to developing brains, according Dr. Jeffrey E. Schiappa, associate professor of pediatrics at Harvard Medical School and an expert on lead poisoning and child health.
“Children who are exposed to lead in utero have very low birth weight, have very poor mental development and cognitive problems, and can have serious consequences in the early years of life,” Schiappas told ABC News.
“This leads to increased risk of developmental delay and mental retardation in children, as well as problems with cognitive abilities later in life.”
Lead poisoning can be passed on to children as early as two years old.
The Centers for Diseases Control and Disease Control estimates that up of one in five children in the U.S. will develop lead poisoning at some point during their lifetime.