Baltimore Will Tap Susquehanna River for Water Supply
The city plans to supplement drought-stricken reservoirs with river water starting in late September or early October.
Updated on Sept. 21, 2026 in Utilities
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Facing declining reservoir levels, the Baltimore Department of Public Works will begin blending Susquehanna River water into the municipal supply in late September or early October 2026. This supplemental water will be filtered and treated to serve areas connected to the Lake Montebello water treatment plants.
Why it matters
The decision comes as drought conditions deplete Baltimore's primary water sources, including the Liberty, Loch Raven, and Prettyboy reservoirs. Authorities are utilizing the river to maintain adequate supply levels while existing voluntary water restrictions remain in effect for residents.
The city's primary water supply is drawn from the Liberty, Loch Raven, and Prettyboy reservoirs, which are currently showing declining levels. The Susquehanna water introduction remains an operational target pending drought progression.
The players
Baltimore Department of Public Works
This municipal agency is responsible for managing the city water supply, sewage systems, and solid waste collection services.
The details
The Susquehanna water will be mixed with reservoir water and subjected to filtration processes to address higher levels of sediment and organic material before being distributed. While the Lake Montebello system will receive this blended supply, residents currently served by the Liberty system are excluded from the change.
Timeline
Late September or early October 2026: The Baltimore Department of Public Works begins taking water from the Susquehanna River.
Market Landscape
This transition to supplemental water sourcing reflects standard drought management strategies used to balance municipal utility loads during periods of low precipitation. By tapping the Susquehanna River, the city aims to stabilize infrastructure reliability against environmental volatility.
Residents in the Lake Montebello service area will receive blended water as part of the municipal supply, though filtration will ensure it remains suitable for consumption. All residents should continue to follow current voluntary water use restrictions until further notice.
The takeaway
Utility providers often diversify water sources as a defensive measure against long-term climate-driven drought risks. Residents can check their service provider documentation to see if their specific property is included in the new blending project.
Further reading
Learn more about local infrastructure and water management on the Utilities page.
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