Wastewater Treatment Workgroup
The Wastewater Treatment Workgroup facilitates the implementation of regulatory approaches to wastewater treatment.
Meetings
Wastewater Treatment Workgroup Meeting - January 2026
Wastewater Treatment Workgroup Meeting - February 2026
Wastewater Treatment Workgroup Meeting - March 2026
CANCELED: Wastewater Treatment Workgroup Meeting - October 2025
Wastewater Treatment Workgroup Meeting - September 2025
CANCELED: Wastewater Treatment Workgroup Meeting - August 2025
About
The scope of the Wastewater Treatment Workgroup (WWTWG) is to facilitate implementing regulatory approaches to wastewater treatment in the Bay watershed. The group is mostly composed of state and federal National Pollution Discharge Elimination System managers from around the Bay watershed.
The purpose of the workgroup is to:
- Track and report wastewater data. Track and report on wastewater nutrient and sediment point source loads from both significant and non-significant facilities, and septic sewer systems.
- Identify and evaluate new wastewater treatment technologies. Discuss the implementation of new wastewater treatment technologies to remove nutrients and sediments. Activities include initiating panel reports on specific topics.
- Engage in peer-to-peer learning and provide a discussion forum. That is, sharing regulatory approaches to improve wastewater treatment to help improve water quality. Exchange information between the Bay partners, stakeholders, and the Chesapeake Bay Program on point source nutrient and sediment removal and the associated implementation costs.
- Leverage resources. Identify and harness opportunities with other workgroups on co-benefits associated with reducing wastewater and septic nutrient loads in the Bay watershed. Provide and receive information (e.g., data, models, methods, and approaches) from other workgroups and committees.
- Respond to Water Quality Goal Implementation Team. Initiate and coordinate activities on wastewater topics in response to WQGIT requests.
Projects
Wastewater Treatment Workgroup Small Group Materials
In ProgressThese reference materials support the Small Groups established by the Wastewater Treatment Workgroup to discuss a boat pumpout best mangement practice, combined sewer overflows and santitary sewer exfiltration.
Phase 7 Model Development
In ProgressThese updated modeling tools will be used by the Chesapeake Bay Program partnership to inform decisions related to the nutrient and sediment reduction goals outlined in the 2014 Chesapeake Bay Watershed Agreement.
Phase 6 Model Review Resources
Repository for resources related to the WWTWG's review of the Phase 6 Watershed Model documentation.
General phase 6 model and midpoint assessment resources, webinar links, and a log of fatal flaw comments are available under WQGIT Projects and Resources: http://www.chesapeakebay.net/who/group/water_quality_goal_implementation_team
Link to wastewater calibration data: https://archive.chesapeakebay.net/?prefix=VT/Phase_6_Calibration_Data_Review/1-Wastewater/
Link to draft Phase 6 Model documentation: https://archive.chesapeakebay.net/?prefix=Modeling/Phase6/Draft_Phase_6/Documentation/
Please contact Michelle Williams, WWTWG staffer (williams.michelle@epa.gov) with any questions.
Publications
Advanced OWTS BMP Panel report
Publication date: Not listedThe Chesapeake Bay On-site Wastewater Nitrogen Removal BMP Expert Review Panel was reconvened to specifically evaluate two proposed BMPs:
Recommendations of the On-Site Wastewater Treatment Systems Expert Panel
Publication date: Not listedApproved by the Water Quality Goal Implementation Team, July 14, 2014
View document [PDF, 2.2 MB] Recommendations of the On-Site Wastewater Treatment Systems Expert Panel
Water Quality Goal Implementation Team (GIT) Governance Protocols
Publication date: Not listedThe decision-making procedures and cross-sector communication processes observed by the Water Quality GIT and its workgroups.
View document [PDF, 176.4 KB] Water Quality Goal Implementation Team (GIT) Governance Protocols
Our Members
- Jamie Heisig-Mitchell (Chair)
Hampton Roads Sanitation District (VA) jmitchell@hrsd.com - Justin Carl (Chair)
Alexandria Renew Enterprises (AlexRenew) justin.carl@alexrenew.com - Petra Baldwin (Staffer)
Chesapeake Research Consortium Baldwin.Petra@epa.gov - Bel Martinez da Matta
Maryland Department of the Environment maria.martinezdamatta@maryland.gov - Erica Duncan
Virginia Department of Environmental Quality erica.duncan@deq.virginia.gov - Zachary Steckler
Pennsylvania Department of Environmental Protection zsteckler@pa.gov - George Onyullo
District of Columbia Department of Energy & Environment george.onyullo@dc.gov - John Rebar
Delaware Department of Natural Resources and Environmental Control John.Rebar@delaware.gov - Tricia Sizemore
West Virginia Department of Environmental Protection tricia.t.sizemore@wv.gov - Rashid Ahmed
New York State Department of Environmental Conservation rashid.ahmed@dec.ny.gov - Marel King
Chesapeake Bay Commission mking@chesbay.us - Dana Hales
U.S. Environmental Protection Agency (EPA) hales.dana@epa.gov - Moussa Wone
DC Water Moussa.Wone@dcwater.com - Ed Cronin
Brown and Caldwell ecronin@brwncald.com - James Grandstaff
Henrico Water Reclamation Facility (VA) gra@henrico.us - Robert Buglass
Washington Suburban Sanitary Commission (MD) bob.buglass@wsscwater.com - Ivy Ozmon
Hampton Roads Planning District Commission (VA) iozmon@hrpdcva.gov - Andrew Malmgren
Lancaster Area Sewer Authority (PA) agmalmgren@gmail.com - Dylan Burgevin
Maryland Department of the Environment dylan.burgevin1@maryland.gov - Joseph Bryan
Virginia Department of Environmental Quality joseph.bryan@deq.virginia.gov - George Mwangi
Delaware Department of Natural Resources and Environmental Control george.mwangi@state.de.us - Dave Montali
Tetra Tech dave.montali@tetratech.com - Cassandra Davis
New York State Department of Environmental Conservation cassandra.davis@dec.ny.gov - Jun Fang
DC Water jun.fang@dcwater.com - Clifton Bell
Brown and Caldwell cbell@brwncald.com