Lead Service Line Replacement: Policy Design, Program Development, and Execution

February 4-5, 2021


Thursday, February 4, 2021 : Central Time

8:45 – 9:00 a.m. :: Log In and Welcome

9:00 a.m. – 4:00 p.m. :: Course Timing

12:00 – 12:30 p.m. :: Lunch Break

History of Lead in Drinking Water and Public Health Impacts

The Origin Story of Lead Service Line Replacement Programs in the District of Columbia

Morning Break

Policy Design

Public Outreach – Part A

Lunch Break

Public Outreach – Part B

Afternoon Break

Taking Inventory: Accurate Data on Lead Service Lines

Lead Service Line Planning

Program Administration

Friday, February 5, 2021

8:45 – 9:00 a.m. :: Log In and Welcome

9:00 a.m. – 12:00 p.m. :: Course Timing

Lead Service Line Engineering and Replacement

Lead Service Line Replacement in the District of Columbia: Barriers and Best Practices

Morning Break

Roundtable Interactive Session 

Wrap up: Questions, Comments, and Remarks


Ying Tan, Physical Scientist, Environmental Protection Agency

Ying has a passion to reduce lead in drinking water. Her first project with lead in drinking water was during graduate school at the University of Minnesota to investigate the use of stannous chloride as a lead corrosion inhibitor. After that, she joined DC Water in 2011 and focused her career on water quality and research activities on lead in drinking water. At the Water Quality & Technology Department, Ying managed the lead testing and compliance monitoring programs, supported the lead service line inventory developments, and provided insights to lead in drinking water research projects. Ying joined the Office of Ground Water and Drinking Water at the EPA in 2020 and oversees the state grant, Lead Testing at School and Child Care Program Drinking Water. Ying holds a Master’s degree in Civil & Environmental Engineering from the University of Minnesota and a Bachelor’s degree in Chemical Engineering from the University of Illinois Urbana-Champaign.

Mackenzie Matthews, Energy Program Specialist, Affordability and Efficiency Division, Washington DC Department of Energy and Environment

Mackenzie Mathews is an Energy Program Specialist in the Affordability and Efficiency Division at the District of Columbia Department of Energy and Environment (DOEE). Mackenzie is passionate about solving environmental problems in a way that alleviates social and economic inequality. She has been fortunate to act on this passion as the program lead for DC’s lead service line replacement assistance program that opened on October 1, 2019. Prior to the creation of this program, Mackenzie was essential to standing up an expansion of DC’s water utility affordability programs. Before joining DOEE, Mackenzie was a project manager for federal and local government mixed methods data analysis contracts at a small market research firm in Maryland and a building energy performance analyst at the U.S. Department of Energy laboratory in Los Alamos, New Mexico. Mackenzie holds a Master of Public Policy from The George Washington University and a Bachelor’s degree in Sustainability from The University of Tennessee. Outside of the office, Mackenzie is a painter, a salsa dancer, and Tennessee Volunteers football fan.


We will be using Microsoft Teams to facilitate your participation in the upcoming event. You do not need to have an existing Teams account in order to participate in the broadcast – the course will play in your browser and you will have the option of using a microphone to speak with the room and ask questions, or type any questions in via the chat window and our on-site representative will relay your question to the instructor.