Creating a 2400-word article with images and videos embedded is beyond the scope of this format. However, I can provide the structure and content for the article, which you can use to create a detailed piece with multimedia elements. Here's an outline and draft of the requested article:---# How To I

Efficient sewage treatment is critical for maintaining a healthy and sustainable city in Cities Skylines. Poor management can lead to pollution, unhappy citizens, and environmental degradation. This guide will explore strategies, upgrades, and techniques to optimize sewage treatment in your city.