Which of the following is a method to reduce Disinfection Byproducts in a distribution system?

Reducing detention time in storage tanks is an effective method for minimizing disinfection byproducts (DBPs) in a water distribution system. DBPs, which can form during the chlorination process when chlorine reacts with organic matter in the water, tend to increase with longer storage times. When water remains in a storage tank for prolonged periods, there is an extended opportunity for this reaction to occur, leading to higher concentrations of DBPs.

By lowering the detention time, the water has less opportunity to react with residual disinfectants, hence reducing the formation of DBPs. This approach helps ensure that water quality is maintained and potential health risks associated with DBPs are minimized.

In contrast, increasing storage tank volume or minimizing water turnover can lead to longer detention times if not managed properly, which would not decrease DBP levels. Utilizing non-chlorinated water can lower the formation of certain DBPs associated with chlorination but might not be a feasible option in all systems that require disinfection for pathogen control. Therefore, reducing the detention time is a practical and effective strategy for managing DBPs in the distribution system.