Baltimore · H2O Quality
Monday, June 8
Enterococcus is a bacteria used by the EPA to measure recreational water safety. Levels are reported as Colony Forming Units per 100 milliliters (CFU/100mL). Below 35 — generally safe for swimming. 35 to 104 — elevated bacteria, swim at your own risk. Above 104 — unsuitable for swimming or direct contact.
Water Quality
Unsuitable
Jones Falls Outfall · Tributaries
Geometric Mean
53CFU
Enterococcus per 100 mL · 53 CFU/100mL
Last Sampled
4 days ago
Report June 4, 2026
Inner Harbor
- Inner Harbor at McKeldin156
- Pier 5 / National Aquarium92
- Harbor East Promenade71
Fells Point & Canton
- Fells Point Broadway Pier48
- Canton Waterfront Park22
- Boston Street Pier31
Locust Point
- Fort McHenry Seawall14
- Tide Point19
Middle Branch
- Masonville Cove27
- Middle Branch Park64
- Cherry Hill Waterfront88
Tributaries
- Jones Falls Outfall312
- Gwynns Falls Mouth245
Patapsco River
- Fort Armistead18
- Brooklyn Pier41
Bacteria levels (Enterococcus CFU/100mL) based on EPA recreational water criteria. Sampling and reporting by Blue Water Baltimore and the Baltimore Harbor Waterkeeper. Updated weekly during swim season.