Drinking Water Quality and Conservation

Over 46,000 people who live and work in the City receive their drinking water from Rockville’s water treatment plant located on the banks of the Potomac River.  Each year, the plant produces nearly two billion gallons of water for drinking, washing and watering lawns and gardens.

The City’s goal is to always provide the residents and businesses we serve with a safe and dependable supply of drinking water. To do this, the City:

You can find comprehensive information about our water treatment plant including results of water quality testing in our Annual Drinking Water Report.

Help Keep Pharmaceuticals Out of Our Water

Trace amounts of various pharmaceuticals have been found in surface and ground water throughout the county. Households contribute a significant portion of these contaminants. People often dispose of unused medicines incorrectly by flushing them down toilets. In addition, some residual medication passes, unabsorbed, through the body and into the sewer system. While the wastewater is treated before it is discharged into reservoirs, rivers or lakes, trace amounts of these chemicals make it through the sewage treatment facilities and out into the environment.

The best way to address this issue is to keep as much medication as possible out of the sewer system in the first place by properly disposing of unused medication.