How many new plants will the city add according to the article?

The correct answer indicates that the city will add six new plants. This information is essential in understanding the scale of the city's sewage treatment expansion plans. Adding six new plants demonstrates a significant investment in infrastructure, which is likely driven by factors such as population growth, increased wastewater demands, or the need to enhance treatment capabilities. Expanding sewage treatment capacity is crucial for ensuring environmental compliance, improving public health outcomes, and meeting the future needs of the community.

In this context, understanding the number of plants being added can also shed light on operational efficiencies, potential job creation within the facilities, and improved resource recovery processes. This kind of information is pivotal for city planners, environmental engineers, and other stakeholders interested in sustainable urban infrastructure development.