Sample interview questions: How do you ensure that plumbing systems are designed to be resistant to waterborne viruses or pathogens?
Sample answer:
-
Use appropriate materials: Select piping materials that are resistant to microbial growth and corrosion. Copper, stainless steel, and cross-linked polyethylene (PEX) are common choices due to their inherent antimicrobial properties and resistance to scaling. Avoid materials like galvanized steel, which can harbor bacteria and promote biofilm formation.
-
Design for proper water flow: Ensure that the plumbing system is designed to promote proper water flow and prevent stagnation. This includes maintaining adequate pipe sizes, avoiding dead legs or areas where water can become trapped, and installing properly sized water heaters to ensure hot water reaches all fixtures at a sufficient temperature.
-
Install backflow prevention devices: Backflow prevention devices prevent contaminated water from flowing back into the potable water supply. Install backflow preventers at appropriate locations, such as hose bibs, irrigation systems, and cross-connections between different water sources.
-
Maintain proper water pressure: Maintain water pressure within the recommended range to ensure adequate flow and prevent leaks. High water pressure can stress pipes and fittings, increasing the risk of leaks and contamination. Read full answer
Source: https://hireabo.com/job/12_0_7/Plumbing%20Inspector