• Work continues to remove the remaining soil between locks 10 and 12 of the C & O Canal which was used as an emergency bypass while the Potomac Interceptor was repaired.
• Crews continue to remove plants, trees and shrubs as part of site preparations for the bypass that will be constructed for the long-term rehabilitation that has been accelerated on more than 2700 linear feet of the Potomac Interceptor.

Water Quality Sampling 

Daily water quality testing continues to show E. coli levels within the typical range for recreation, with normal historical fluctuations attributed to rain, heat, stormwater runoff, and other known environmental factors. See the District Department of Energy and Environment webpage for more details.

Ongoing sampling is precautionary and intended to address community concerns, ensuring the highest standards of public health and safety.

For the Potomac River, historical water quality data shows E. coli levels may vary from a range as low as 10 MPN/100mL to as much as 5,000 MPN/100mL on a given day.

Results April 27 – present below: (past results can be found  here)