What happened to change the water quality in Flint?

1. The city built a new pipeline to connect to a nearby water system.

2. The city added chlorine to the water supply, which removed harmful bacteria.

3. The city switched its water sources from the Detroit water system to the Flint River.

4. The city switched its water source from the Flint River to the Detroit water system.

3. The city switched its water sources from the Detroit water system to the Flint River.

2. developmental delays, 4. learning difficulties, and 5. rashes and skin irritation.

I apologize for the mistake. You are correct, Legionella pneumophila was the bacteria that caused 12 people to die in Flint. Thank you for bringing it to my attention.

What was in Flint's water that caused 12 people to die?

1. lead

2. total trihalomethanes

3. Legionella pneumophila

4. Escherichia coli

Which of the following are symptoms of lead poisoning in children? Select the three correct answers.

1. abdominal pain and vomiting

2. developmental delays

3. breathing difficulty and asthma

4. learning difficulties

5. rashes and skin irritation

The answer for the second question is wrong. It's not lead, it's Legionella pneumophila.

1. Lead