Green City, Clean Waters is Philadelphia's 25-year plan to protect and enhance our watersheds by managing stormwater with innovative green infrastructure. The Philadelphia Water Department developed Green City, Clean Waters to provide a clear pathway to a sustainable future while strengthening the utility, broadening its mission, and complying with environmental laws and regulations.
Images above are design concepts only
2011-2012 Green City, Clean Waters Year in Review
There has been lots of excitement and major successes for the City of Philadelphia since the Green City, Clean Waters plan was signed back in June, 2011: new green stormwater infrastructure has been constructed; numerous designs are underway; opportunities to engage citizens are growing, among a variety of other initiatives. To commemorate our achievements, the Philadelphia Water Department is proud to share with you a photojournalistic glimpse into the highlights of the past year -
Related Blog: Giving Thanks
To learn more about Green City, Clean Waters, we recommend you start with the Summary Report. To help you understand the terminology and issues behind Green City, Clean Waters (technically known as the CSO Long Term Control Plan Update), here are some key concepts that inform our planning and solutions:
Stormwater Management Tools
|How do we keep stormwater from causing sewer overflows into our rivers and streams? PWD's green stormwater infrastructure tools evaporate some of the runoff into the ground, evaporate a portion of it into the air, and in some cases slowly release the water into the sewer system.||
|Videos||The Big Green Map
Green City, Clean Waters
Columbus Square Park
Greener, Healthier Playgrounds
|more videos >>|
CSO Long Term Control Plan Update Documents
EPA Administrative Order for Compliance on Consent
EPA Partnership Agreement
On April 10, 2012, the City of Philadelphia and the U.S. Environmental Protection Agency signed a partnership agreement to recognize the Green City, Clean Waters plan and its approach to stormwater management.
PA DEP Consent Order and Agreement
Consent Order and Agreement executed with the Pennsylvania Department of Environmental Protection on June 1, 2011 for the implementation of the Philadelphia Water Department's Combined Sewer Overflow Long Term Control Plan Update (Green City, Clean Waters Plan)
Complete Document (5.5 MB)
Consent Order and Agreement Required Deliverables
The following documents were submitted to the Pennsylvania Department of Environmental Protection as required by Appendix G of the Consent Order and Agreement.
The Implementation and Adaptive Management Plan (IAMP) was submitted to the PADEP by December 1, 2011. This plan provided the implementation framework for the Green City, Clean Waters program proposed in the LTCPU and its supplements. This plan described the programmatic elements that will be developed during the first five years of COA implementation.
Appendices (5.7 MB)
The Green Stormwater Infrastructure (GSI) Maintenance Manual Development Process Plan was submitted to the PADEP by June 1, 2012. This plan describes the current green stormwater infrastructure maintenance program and provides an overview of the process to develop the GSI Maintenance Manual by June 1, 2014.
The Plant Identification Manual contains information needed to make informed decisions about plant selection for GSI projects. When choosing plants for a GSI project, the information in this manual can help narrow the choices down to the most appropriate plant for each location.
The Plant Identification Manual (22 MB)
The Water Department's Comprehensive Monitoring Plan was approved May 28, 2014. The plan was originally submitted on June 1, 2013 and revised January 10, 2014 to incorporate PWD's responses to comments received from PADEP and USEPA. It is our initial plan for performing monitoring of natural and engineered systems associated with our Green City, Clean Waters program and addresses the monitoring and assessment of surface waters, groundwater, rainfall, CSO discharges, sewer flows, and green infrastructure performance.
Comprehensive Monitoring Plan (10.1 MB)
The Facility Concept Plans for the three Water Pollution Control Plants (NE, SE, SW) were submitted to the PADEP by June 1, 2013. These plans describe the specific engineering and construction activities proposed to increase the maximum wet weather flow into each water pollution control plant facility and thereby increase the capture rate of combined sewage.The Northeast Facility Concept Plan was revised based on comments from PADEP and re-submitted on December 31, 2013.
The Updated Nine Minimum Controls Report was submitted to the PADEP by June 1, 2013. This report is an update to the 1995 "Implementation of Nine Minimum Controls" document and indicates how the City's activities are being carried out currently, and highlight how these activities may have changed as a result of new technology, new practice, or other circumstances to address the CSO Nine Minimum Controls.
The Tributary Water Quality Model for Bacteria was submitted to the PADEP by June 1, 2013. This report describes the methods and results of a model that simulates bacteria concentrations in the nontidal reaches of Tacony/Frankford Creek and the Cobbs Creek that are affected by CSOs.
The Tributary Water Quality Model for Dissolved Oxygen was submitted to the PADEP by June 1, 2014. This report describes the methods and results of a receiving water quality model for Dissolved Oxygen (DO) in the nontidal extents of Tacony-Frankford Creek and Cobbs Creek. Extensive field monitoring data were used to develop and validate the model, which simulates existing DO conditions and underlying stream processes in the receiving waters.
The First Edition of the Green Infrastructure Maintenance Manual was submitted to the PADEP by June 1, 2014. The Manual describes the operation and maintenance of the full range of types of green stormwater infrastructure projects that have been, and that are proposed to be, implemented by the City as part of the CSO Program. The Manual is designed to be used by City agencies and anyone else who has responsibility for performing maintenance of green stormwater infrastructure. The Deliverable required by the Consent Order and Agreement should be considered the "first edition" of the Manual, since it is expected that the Manual will need to be updated periodically as the technology of green stormwater infrastructure advances, and as experience is gained with specific practices.
Green Infrastructure Maintenance Manual - First Edition (High Resolution - 46 MB)
The Sanitary Sewer Evaluation Survey (SSES) Report was submitted to the PADEP by June 1, 2014. The report describes the results of analyses performed using the USEPA sanitary Sewer Overflow Analysis and Planning Toolbox on flow metering data collected in the areas of the city served by separate sanitary sewers. The primary goal of the SSES is to address I/I in the separate sewer areas tributary to the City’s water pollution control plants by quantifying and characterizing monitored wastewater flows. The results characterize the base wastewater flows, the groundwater infiltration, and the rainfall-derived infiltration and inflow conditions within these portions of the City.
The Tidal Waters Water Quality Model - Bacteria and Tidal Waters Water Quality Model - Dissolved Oxygen were submitted as one report to the PADEP by June 1, 2015. The report describes the methods, and provides the results, of a project to model the receiving water quality in the tidal Delaware River and the tidal Schuylkill River.
The Outlying Communities Report was submitted to the PADEP by June 1, 2015. The report describes the activities conducted by PWD to analyze, quantify and characterize the dry weather and wet weather flows conveyed from outlying community points of connection to the City’s combined and separate sewer systems.
Outlying Communities Report (24 MB)
Long Term Control Plan Update
Complete Document (30 MB)
Section 1 Introduction and Background
Section 2 Public Participation
Section 3 Characterization of Current Conditions
Section 4 Problem Analysis and Goal Setting
Section 5 Overview of the LTCPU
Section 7 Water-Based Control Measures
Section 10 Recommend Plan Elements
Section 11 Financial Capability
Section 12 Post-Construction Monitoring
All Volumes (118 MB)
Volume 2 Triple Bottom Line Analysis
Volume 3 Basis of Cost Opinions
Volume 4 Hydrologic and Hydraulic Modeling
Volume 5 Precipitation Analysis
Volume 6 Stress Testing of the Northeast WPCP
Volume 7 Stress Testing of the Southeast WPCP
Volume 8 Stress Testing of the Southwest WPCP
Volume 13 TTF Integrated Watershed Management Plan
Volume 16 Cobbs Creek Vision Document
Volume 17 Tookany/Tacony-Frankford Vision Document
The U.S. Environmental Protection Agency and the City of Philadelphia have partnered to advance green infrastructure for urban wet weather pollution control. This partnership assures EPA’s support of Philadelphia’s adoption of green infrastructure to improve both water quality and the sustainability of its neighborhoods. Read agreement >>
The U.S.-Brazil Joint Initiative on Urban Sustainability is an innovative public-private partnership for catalyzing investment in sustainable urban infrastructure. Rio de Janeiro and Philadelphia have partnered to identify opportunities for scaling up investment in urban sustainability. more >>