Is Tap Water Safe to Drink in Baltimore?
Yes, tap water in Baltimore is generally safe to drink. It's drawn from regional reservoirs and treated by Baltimore's Department of Public Works, though the system has had two health-based violations since 2022, including an E. coli detection that led to a boil-water advisory in West Baltimore.
Water Source
Baltimore DPW draws from the Loch Raven, Prettyboy, and Liberty Reservoirs, fed by the Gunpowder Falls, Patapsco, and Susquehanna watersheds.
EPA Compliance Status
EPA records show two health-based violations since 2021. The first was an E. coli detection in September 2022 that led to a boil-water advisory in West Baltimore; the second was a trihalomethane (TTHM) exceedance of 81 µg/L against the 80 µg/L limit in early 2026. EPA also issued an order in 2023 over the city's uncovered finished-water reservoirs. The system otherwise meets federal Safe Drinking Water Act standards.
Notable Contaminants & Context
- •Some older rowhome neighborhoods, common to many pre-1950s East Coast cities, have legacy lead service lines; the city runs an active testing and replacement program
- •Disinfection byproducts (trihalomethanes) exceeded the federal limit at one monitoring point in early 2026
How It Compares
Baltimore's reservoir system provides comparatively high-quality source water typical of well-protected Mid-Atlantic watersheds.
Tips
- •Free lead test kits are available for residents in older rowhomes
- •Baltimore DPW publishes an annual water quality report
- •Running the tap briefly clears standing water in older buildings
Frequently Asked Questions
Sources & References
The safety rating and guidance on this page draw on the following sources. See our full methodology.
- •US EPA Safe Drinking Water Act regulations
- •EWG Tap Water Database
- •The utility's most recent Consumer Confidence Report (CCR)
- •WHO Guidelines for Drinking-water Quality