Many of us take plumbing for granted, especially indoor plumbing. We turn on the tap and out comes water, hot or cold, our choice, but we never really think about it. We flush the toilet, wash our hands, and get on with our lives. On March 11 of every year, however, we can celebrate World Plumbing Day and be thankful for our own healthy plumbing. What’s more, we can work together on this day to bring quality plumbing to those in need. Our health, economic prosperity, and environmental sustainability are all interdependent upon clean water from clean, well-working plumbing. March…