Low pH can lead to which kind of problems?

• A. Corrosion
• B. Scaling
• C. Biological growth
• D. Odor

Answer: (A)

Low pH means the water is more acidic, and that acid attacks metal surfaces. The hydrogen ions corrode the protective oxide layers on pipes and equipment, speeding dissolution of metals and leading to damaged infrastructure, leaks, and contamination from dissolved metals. Scaling, which is mineral precipitation, tends to form when water is more alkaline and carbonate species precipitate, so it's less likely at very low pH. Biological growth thrives in neutral to mildly alkaline conditions and is often inhibited by strongly acidic water, so low pH is not a primary driver of microbial buildup. Odor can arise from many factors and isn’t a direct or consistent result of acidity. So the main problem caused by low pH is corrosion.