Poor water quality can destabilize emulsions through hardness, dissolved salts, and organic contaminants. Hard water can reduce surfactant effectiveness and promote flocculation. Alkalinity and impurities can shift pH, changing charge behavior and break characteristics. Microbial growth in water systems can also affect odor, stability, and filters over time. Plants extend shelf life by using filtered or softened water, controlling pH precisely, maintaining clean tanks and lines, and keeping consistent temperatures. Water quality control is often one of the highest leverage steps for stable production.