cities in the United States that have effective strategies for urban growth

1.List two cities in the United States that have effective strategies for urban growth. For each of the cities, describe their problem and how it was solved.
Your response must be at least 200 words in length. APA format with references required

2. What are the treatment processes used to make drinking water safe from sources such as groundwater or surface water?
Your response must be at least 200 words in length. APA format with references required