Test your knowledge with ABYC's Question of the Week! 💡 To properly disinfect a potable-water system per ABYC Standards, a chlorine solution of at least ______ must be introduced into the system for at least ______. A. 10 ppm, 10 hours B. 100 ppm, 10 hours C. 100 ppm, 1 hour D. 1000 ppm, 1 hour Drop your guess in the comments below!
Bill Porter
3w
"C"
I had to look that one up to be sure. Thank goodness for the big blue standards book!