The Washington Aqueduct disinfects the drinking water with chlorine and chloramine to protect against contaminants. DC Water routinely collects and analyzes samples throughout the city to ensure chlorine levels are at or below our target level. However, at times customers may notice an increase in chlorine taste and odor. A chlorine odor is often an indicator that the disinfectant is effectively working to remove bacteria and debris in your pipes.

If you are experiencing a chlorine odor, DC Water recommends flushing your cold water taps for 5-10 minutes for three days to eliminate the odor and remove any bacteria and debris. If you experience a chlorine taste, we recommend collecting and refrigerating cold water after running your cold tap for at least two minutes or after high water use activities such as bathing or washing clothes. Use clean, sterile bottles or pitchers for collecting cold tap water and refrigerate in an open container. Within a few hours, the chlorine taste and odor will disappear and the water will be cold for drinking. If a chlorine odor continues after flushing, contact the Drinking Water Division at 202-612-3440.