if you are rinsing your filters under tap water briefly, the chlorine is not killing any bacteria, the contact time is nowhere near long enough.
I have been doing this for 20 years, always wondering why I was not wiping out my tanks lol
then I got into the water and wastewater treatment industry and found out why.
chlorine takes time to work. water treatment plants, for example, in ontario, allow for a minimum 20 minutes contact time for water to be exposed to chlorine (which is a surface disinfectant) for disinfection.
thats why rinsing your media under tap water for 30 seconds doesn't do anything.
now, granted, the more chlorine in your water, the lower the contact time required for disinfection.
but still, your not going to be anywhere near the time required to cause problems unless your municipal water is straight chlorine..