Is tap water a safe alternative to normal saline for wound irrigation in the community setting?

OBJECTIVE: This double-blind randomised controlled trial compared the effects of tap water and normal saline on the healing and infection rates of acute and chronic wounds. METHOD: The trial was conducted in two metropolitan community health centres in New South Wales, Australia. Thirty-five patients with 49 acute or chronic wounds were randomised to receive wound irrigation with either normal saline or tap water. RESULTS: Statistical analysis demonstrated there was no significant difference between the infection and healing rates in wounds irrigated with normal saline or tap water. CONCLUSION: Although the small sample size is a limitation of this study, the researchers conclude that drinkable tap water appears to provide a safe alternative to normal saline for wound cleansing and may be preferred by some patients.