Uploaded December 2025 | Updated September 2026, 5 hours ago
DC Water christened Mary, the Tunnel Boring Machine at the West Potomac Park site. Mary will excavate the Potomac River Tunnel, a vital step toward protecting the river and improving water quality in Washington, DC. Learn more about this transformative project at dcwater.com/prt.
DC Water christened Mary, the Tunnel Boring Machine at the West Potomac Park site. Mary will excavate the Potomac River Tunnel, a vital step toward protecting the river and improving water quality in Washington, DC. Learn more about this transformative project at dcwater.com/prt.










