Arizona Plumbing Practice Exam

What is the minimum side wall depth for each seepage pit, below the inlet?

1. 5 feet

2. 7 feet

3. 10 feet

4. 12 feet

The correct answer is: 10 feet

The minimum sidewall depth for each seepage pit, as specified in plumbing regulations, is essential for ensuring proper drainage and preventing issues such as groundwater contamination. A sidewall depth of 10 feet provides adequate space for the effluent to disperse through the soil effectively. It allows for sufficient filtration and treatment of the wastewater before it reaches the groundwater table, which is critical for protecting the environment and public health. This depth is guided by industry standards and practices that consider factors like soil absorption rates and the potential for saturation. A depth of 10 feet strikes a balance between effective drainage and minimizing the risk of contamination, while also taking into account the practical aspects of construction and maintenance of seepage pits. Understanding this requirement can help plumbing professionals design effective wastewater management systems, ensuring compliance with local standards and safeguarding water quality.