Rockville's drinking water remains safe and reliable, as confirmed by the city's Annual Drinking Water Quality Report released on July 1. The report indicates that the water treatment plant, which supplies approximately 70% of the city’s residents, has consistently met or exceeded federal water quality standards. A significant upgrade project initiated in 2021 is nearing completion, focusing on replacing aged electrical components and improving the plant's infrastructure. Despite a monitoring violation in 2023 due to a clerical error regarding synthetic organic contaminants, the city reassured residents that no immediate action was required. Upcoming projects will further enhance safety and reliability, including network security improvements and a switch from chlorine gas to sodium hypochlorite.

Additionally, Rockville is preparing to comply with new Lead and Copper Rule Revisions by the EPA, which involves inventorying water service line materials. The city aims to develop a lead service line replacement plan and enhance corrosion control measures. For more information on water quality, residents are encouraged to visit the city's official website.