When flushing tanks and lines it is important to run them dry then add 1/4 tank, flush everything and do it again and repeat. The reason for this is that it is very difficult to get rid of unwanted stuff in the system by mixing clean with bad. You need to have as little bad water in the system as possible when adding fresh to flush.
Some city systems have switched to amine instead of chlorine. Less smell and less effective.
Some city systems have switched to amine instead of chlorine. Less smell and less effective.