The Calvert Global Water Fund Class A (CFWAX) is a mutual fund that focuses on investing in companies that are involved in the water industry. This includes companies that provide water treatment, distribution, and infrastructure services. The fund aims to provide long-term capital appreciation by investing in companies that are committed to sustainable water management practices. It also considers environmental, social, and governance factors in its investment decisions. CFWAX offers investors a diversified portfolio of global water-related companies, making it a suitable option for those looking to invest in the growing demand for clean water solutions.