Annual Water Quality Report 

Each year, the U.S. Environmental Protection Agency requires water systems to issue Consumer Confidence Reports (CCR), also known as the Water Quality Report, by July 1 detailing water quality for the previous year. This annual report informs water customers where the City’s drinking water comes from, how the water is treated, what chemicals it contains, and how it meets federal standards for tap water.

 The Baltimore City Department of Public Works (DPW) uses electronic delivery to disseminate its Annual Water Quality Report to City and County water customers.  The 2023 water quality data (Jan. 1, 2023, to Dec. 31, 2023) is available online: Water Report Web Page. Customers who want a printed copy of the report can call 311 or (410) 396-5352 (Baltimore County customers).

 Please click on the links or images below to download a copy of a recent water quality report.

Water Analyses

These analyses provide information on the general chemical composition of the water and its mineral or metal content.

• 2022 Mineral Analyses at the Ashburton Water Quality Laboratory
• 2022 Mineral Analyses at the Montebello Water Quality Laboratory
• 2021 Mineral Analyses at the Ashburton Water Quality Laboratory
• 2021 Mineral Analyses at the Montebello Water Quality Laboratory
• 2020 Mineral Analyses at the Ashburton Water Quality Laboratory
• 2020 Mineral Analyses at the Montebello Water Quality Laboratory
• 2019 Mineral Analyses at the Ashburton Water Quality Laboratory
• 2019 Mineral Analyses at the Montebello Water Quality Laboratory 
• 2018 Mineral Analyses at the Ashburton Water Quality Laboratory
• 2018 Mineral Analyses at the Montebello Water Quality Laboratory 
• 2017 Mineral Analyses at the Ashburton Water Quality Laboratory
• 2017 Mineral Analyses at the Montebello Water Quality Laboratory 
• 2016 Mineral Analyses at the Ashburton Water Quality Laboratory
• 2016 Mineral Analyses at the Montebello Water Quality Laboratory 
• 2015 Mineral Analyses at the Ashburton Water Quality Laboratory
• 2015 Mineral Analyses at the Montebello Water Quality Laboratory​

Baltimore City has two water quality laboratories, one is located at the Montebello Filtration Plant and the other lab is at the Ashburton Filtration Plant. Both water quality laboratories are Maryland Department of the Environment (MDE) certified and combined perform approximately 150,000 water quality analyses per year to ensure the quality of the drinking water. Most compliance analyses required by State and Federal regulations are completed on site.