As UV has no residual, how do I make sure the entire distribution system is free from bacteriological contaminants?
To ensure a bacteriologically-free distribution system, it is imperative that the entire water system located after the UV is chemically disinfected. This is easily accomplished by filling the pre-filter with 1-2 cups of household bleach and allowing this to flow through the system. While doing this, you must ensure that all taps, including outside faucets, dishwashers, washing machines, etc. pass chlorinated water. Once you detect the bleach at the faucets, shut the faucet off and wait a minimum of 20 minutes to allow adequate disinfection. Return to all locations and flush the chemical disinfectant from the system. Make sure the UV is on during this procedure. Remember to have your water tested on a regular basis to ensure that your system is operating correctly.
