South Hartford Conveyance and Storage Tunnel

South Hartford Conveyance and Storage Tunnel

The SHCST is a four mile long deep rock tunnel designed to store excess combined wastewater and storm water during rain events...
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Wet Weather Expansion

Wet Weather Expansion

MDC is expanding the capacity of the Hartford Water Pollution Control Facility to provide treatment of wet weather flows, up to...
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About the Project

About the Project

When stormwater overwhelms the MDC’s sewer system, it causes combined sewer overflows into local waterways and backups into...
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News & Events

South Hartford Conveyance and Storage Tunnel Video Short

May 29, 2020 - Learn More >

South Hartford Conveyance and Storage Tunnel Brochure

February 5, 2020 - Learn More >

YouTube Video: Integrated Plan

January 29, 2020 - Learn More >

YouTube Video: The Clean Water Project

January 8, 2020 - Learn More >

Fox 61 News story on MDC’s South Hartford Conveyance and Storage Tunnel

December 26, 2019 - Learn More >

Tunnel Business Magazine Update

October 17, 2019 - Learn More >

Press Release:Green Infrastructure Improvement Project Completed at MDC Headquarters

June 28, 2019 - Learn More >

Press Release: MDC Receives National Recognition for Supplier Diversity Efforts on the Clean Water Project from U.S. EPA

May 13, 2019 - Learn More >

2018 Integrated Plan Long Term Control Plan Information

January 4, 2019 - Learn More >

Hartford Courant:Tunnel Ahead (article and video)

August 2, 2018 - Learn More >

Featured Videos

Complexity Under Control - The Clean Water Project - CDM SMith Project Stories

Fox 61: A look deep inside the MDC Tunnel

South Hartford Conveyance and Storage Tunnel Construction Update August 2019

Ride on the "loki" Train 200 feet underground

Tunnel Boring Machine construction update August 2018

Time Lapse Construction Video of Tunnel

South Hartford Tunnel Pump Station Blasting

South Hartford Conveyance and Storage Tunnel Blasting

South Hartford Conveyance and Storage Tunnel Construction October 2017

South Hartford Conveyance and Storage Tunnel Construction

South Hartford Conveyance and Storage Tunnel Groundbreaking

MDC Wastewater Treatment

MDC Wastewater Documentary

Complexity Under Control - The Clean Water Project - CDM SMith Project Stories

Fox 61: A look deep inside the MDC Tunnel

The Clean Water Project

The Metropolitan District (MDC) manages the Hartford region's drinking water and wastewater systems.  The Clean Water Project is a program that upgrades the MDC's wastewater infrastructure with more than $2 billion of improvements designed to protect the health and safety of citizens during storm events and formally addresses a federal consent decree and a Connecticut DEEP consent order to achieve Federal Clean Water Act goals.

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