What type of water is used to reconstitute enteral formula?

• A. Distilled water
• B. Tap water
• C. Purified water
• D. Sterile water

Answer: (C)

Using water to reconstitute an enteral formula is about providing a clean, safe diluent that won’t introduce contaminants or disturb the patient’s electrolyte balance. Purified water fits this role well because it has been treated to remove most microbes and dissolved solids, giving a consistent, safe diluent for the powder formula. It avoids the potential microbes and chemicals that can be present in tap water, and it isn’t so mineral-poor as to unpredictably shift electrolytes like some distilled water can over time. Sterile water isn’t routinely needed for enteral feeds and is usually reserved for IV medications or specific immune-compromised situations. Distilled water, while very pure, may lack minerals that some protocols rely on, and isn’t typically preferred over purified water for routine reconstitution.