Citywide Long-Term Control Plan - DEP

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Long-Term Control Plans
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Long-Term Control Plans

Harbor Water Quality

Trash in Waterways

Waterbody Advisories


Long Term Control Plans

On March 8, 2012, the New York State Department of Environmental Conservation (DEC) and DEP signed a groundbreaking agreement to reduce Combined Sewer Overflows (CSOs) using a hybrid green and gray infrastructure approach. As part of this agreement, DEP will develop 10 waterbody-specific Long Term Control Plans plus 1 citywide LTCP to reduce CSOs and improve water quality in NYC’s waterbodies and waterways. The goal of each Long Term Control Plan (LTCP) is to identify the appropriate CSO controls necessary to achieve waterbody-specific water quality standards, consistent with the Federal CSO Policy and the water quality goals of the Clean Water Act.

To learn more about the City’s LTCPs and efforts to improve water quality, download Improving New York City’s Waterways – Reducing the Impacts of CSOs.

LTCP Feedback

If you wish to submit comments on the LTCP or would like to receive LTCP Program announcements, please email ltcp@dep.nyc.gov.

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CSO Consent Order Documents and Quarterly Reports

Download the CSO Consent Order (CO2-20110512-25)

Download the LTCP Goal Statement

Combined Sewer Overflow Order on Consent Quarterly Progress Reports

Download the CSO Quarterly Progress Report—Second Quarter—2024

To view all previous quarterly progress reports, visit our Document Portal and search for “Quarterly Progress Report.”

LTCP Public Participation Plan

The LTCP Public Participation Plan describes the methods DEP will utilize to raise awareness about, foster understanding of and encourage input on the development of waterbody-specific and citywide LTCPs.

Download the LTCP Public Participation Plan

NYC Green Infrastructure Program

The 2012 CSO Consent Order outlined, among other things, a roadmap for the implementation of green infrastructure throughout the combined sewer areas of the City. Since 2012, DEP has included green infrastructure implementation as part of its regulatory milestones to complement traditional gray infrastructure investments. In 2023, DEP and the New York State Department of Environmental Conservation signed a modification to the Consent Order, which includes expanding the definition of green infrastructure, extending the deliverable timeline with updated certification metrics and interim milestones, and increasing DEP total funding commitment for green infrastructure to include projects located citywide.

Download the 2023 CSO Consent Order Modification

LTCP Citywide Meetings

The City holds a series of waterbody specific public meetings throughout the development of each LTCP. The City also holds regular Citywide meetings to discuss the entire CSO program, provide status updates on LTCP progress.

Annual Citywide LTCP Public Meeting (Dec 5, 2018 - CUNY School of Law, Queens)

Download the 2018 LTCP Citywide Public Meeting – Presentation

To watch the 2018 Annual Citywide Long Term Control Plan Meeting, visit our YouTube Channel.

Annual Citywide LTCP Public Meeting (Nov 15, 2017 - CUNY School of Law, Queens)

Download the 2017 LTCP Citywide Public Meeting – Presentation

To watch the 2017 Annual Citywide Long Term Control Plan Meeting, visit our YouTube Channel.

LTCP Citywide Public Meeting (January 12, 2016 - La Guardia Community College)

Download the LTCP Citywide Public Meeting - Presentation

Download the LTCP Citywide Public Meeting - Summary

Download the LTCP Citywide Public Meeting - Affordability Board

Download the LTCP Citywide Public Meeting - Water Quality and Uses Board

Download the LTCP Citywide Public Meeting - CSO Controls Board

Download the LTCP Citywide Public Meeting - General Board

Download the LTCP Citywide Public Meeting - MS4 Board

Download the MS4 Quick Facts

LTCP Third Annual Citywide Meeting (December 11, 2014 - Hostos College, Bronx, NY)

The Third Annual Citywide LTCP was held on Thursday December 11, 2014 at Hostos College in the Bronx. At the meeting, DEP reviewed the NYC Wastewater infrastructure, the LTCP process, the 2014 draft LTCP submittals (Westchester Creek, Hutchinson River and Flushing Creek) and provided an update on the Green Infrastructure program. DEP staff were available throughout the meeting to answer questions and present information on DEP’s CSO program and the LTCP process.

Download the LTCP Third Annual Citywide Meeting Advertisement

Download the LTCP Third Annual Citywide Meeting Presentation

Download the LTCP Third Annual Citywide Meeting Summary

LTCP Third Annual Citywide Meeting Poster Boards

Download the What is a Combined Sewer Overflow Poster Board

Download the Current Water Quality Standards Updated Poster Board

Download the NYC Wastewater Drainage Areas and Wastewater Collection Facilities Poster Board

Download the Types of Green Infrastructure Poster Board

Download the Potential LTCP Alternatives

Download the NYC’s Combined Sewer Areas and LTCP Waterbodies Poster Board

Download the Combined Sewer Overflow in NYC Poster Board

Download the Nine elements of a Long Term Control Plan Poster Board

LTCP Citywide Modeling Meeting (February 28, 2013 - US Custom House, Manhattan)

Attendees of the LTCP Citywide Modeling Meeting learned more about the modeling processes that will be used to test potential alternatives identified as part of the LTCP Program. At the meeting, DEP and DEC staff reviewed the Watershed/Landside and Hydrodynamic/Water Quality models and the proposed baseline assumptions for evaluating the benefits of CSO control alternatives. DEP and DEC staff were available throughout the meeting to answer questions and present information on DEP’s CSO program and the LTCP process.

Download the LTCP Citywide Modeling Meeting Summary

Download the LTCP Citywide Modeling Meeting Advertisement

Download the LTCP Citywide Modeling Meeting Agenda

Download the LTCP Citywide Modeling Meeting Poster Boards

Download the LTCP Citywide Modeling Meeting Presentation

LTCP Citywide Kickoff Meeting (June 26, 2012—Visitor Center at Newtown Creek)

Attendees of the LTCP Citywide Kickoff Meeting learned more about DEP’s current and upcoming efforts to reduce CSOs and how to provide input on possible solutions. DEP and DEC staff were available throughout the session to answer questions and present information on DEP’s CSO program and the LTCP process.

Download the LTCP Citywide Kickoff Meeting Summary

Watch the LTCP Citywide Modeling Meeting—Part One

Watch the LTCP Citywide Modeling Meeting—Part Two

Watch the LTCP Citywide Modeling Meeting—Part Three

Download the LTCP Citywide Kickoff Meeting Advertisement

Download the LTCP Citywide Kickoff Agenda

Download the LTCP Citywide Kickoff Presentation

Download the LTCP Citywide Modeling Meeting – Glossary of Modeling Terms

LTCP Citywide Kickoff Meeting Poster Boards

Download the History of NYC’s Sewer and Wastewater Systems Poster Boards

Download the NYC’s Combined Sewer Overflow Program Poster Boards

Download the NYC’s Green Infrastructure Program Poster Boards

Download the Citywide Waterfront Initiatives Poster Boards

Download the Evaluating Alternatives for Water Quality Improvements Poster Boards

LTCP Citywide Related Reports

Download the InfoWorks Citywide Recalibration Report

Download the 2012 Hydraulic Capacity Analysis Report

Download the Recalibration Report Comments and Responses