Texas Commission on Environmental Quality (TCEQ). Class C Water License Exam

When chemicals are used at a water treatment plant, how many days' supply should be maintained at a minimum?

1. 15

2. 20

3. 30

4. 45

The correct answer is: 30

The correct response indicates that a water treatment plant should maintain a minimum supply of chemicals for 30 days. This requirement is critical for ensuring operational continuity, especially in the event of supply chain disruptions or unforeseen emergencies. A 30-day supply allows for adequate time to procure additional chemicals should there be a delay in resupply, helping to prevent service interruptions that could affect water quality and treatment processes. Maintaining a supply of chemicals is essential for water treatment plants, as these chemicals are vital for disinfection, coagulation, and various other critical treatment processes. A shorter supply could lead to inadequate treatment, potentially compromising water safety and public health. Therefore, having a 30-day buffer also aligns with best practices and regulatory recommendations, providing assurance that the plant can continue operating safely and effectively.