Storage facility water quality design considerations must conform to the latest standards from which two organizations?

• A. AWWA, NSF
• B. EPA, OSHA
• C. ANSI, ISO
• D. CDC, NIH

Answer: (A)

Design decisions for storage facility water quality rely on standards published by organizations that specialize in drinking water engineering and materials safety. The best choice is the combination of AWWA and NSF. AWWA provides engineering standards and recommended practices for water systems, including storage facilities, treatment, and distribution, guiding how facilities should be designed and operated to protect water quality. NSF International develops and maintains standards for products and materials that come into contact with drinking water, ensuring components used in storage facilities are safe and do not contaminate the water. Together, these two organizations supply the current, widely accepted benchmarks for both system design and the materials used.

Regulatory rules from EPA dictate required limits utilities must meet, but they aren’t the specific design standards engineers reference for facility construction and materials. OSHA focuses on workplace safety. ANSI/ISO cover broad quality and management standards, not the specific drinking-water design standards used for storage facilities. CDC/NIH provide health guidance, not operational design standards for water storage.