Drinking Water
Safe drinking water is our top priority
The Baltimore City Department of Public Works supports the health, environment, and economy of our City and the region by providing our customers with safe drinking water.
DPW is the major water supplier for Baltimore and surrounding areas
DPW provides safe drinking water to 1.8 million residential and business customers, making the City of Baltimore the major water supplier for the Baltimore region. In addition to Baltimore City, DPW supplies water to these surrounding counties:
- Baltimore
- Howard
- Harford
- Carroll
- Anne Arundel
Where does your water come from?
DPW maintains three water reservoirs. They contain the water that becomes your drinking water after we test, clean, and filter it. These reservoirs combined hold about 86 billion gallons of water.
- Prettyboy reservoir
- Loch Raven reservoir
- Liberty reservoir
From reservoir to tap: fresh, clean drinking water
Baltimore has three water treatment plants:
- Montebello I
- Montebello II
- Ashburton Filtration Plant
Combined, the water treatment plants produce up to 360 million gallons of safe and clean drinking water each day. The water filtration plants treat and produce water that meets or exceeds federal and state drinking water standards.
- Review our monthly water testing reports
- Review our annual water quality reports
- Maryland drinking water standards
- Federal drinking water standards
Take a tour of a water treatment plant
The Baltimore City Department of Public Works provides tours for our customers, students, businesses, or anyone interested in how we treat, test, and filter your drinking water at our water filtration plants.
Schedule a tour
- Montebello Plant: Call 410-396-6040
- Ashburton Plant: Call 410-396-0150
Questions or concerns about your drinking water?
To report any concerns about your drinking water, call 311. Water customers located outside of Baltimore City may call 410-396-5352 for assistance.