I need to treat my wells for coliform bacteria. What I have heard and read there are two ways to do that. First is with pouring bleach down the well, running the house water until you smell the bleach and then let it sit for 24 hours before flushing the pipes so you can use house water again. The other way is by dropping chlorine tablets down the well. I'm not sure if the tablets also require the 24 hour period or not. Any help will be greatly appreciated. Any help will be greatly appreciated.