COVID-19: Wastewater Testing Data

Download Maine CDC Wastewater Testing Reports

The reports listed below are the latest received by the Maine CDC. Individual site reports are now being added, and we expect all site reports will be added by the end of March.

• Bath Wastewater Treatment Plant (PDF) (last updated 6/30/2022)
• Belfast Influent in Waldo County (PDF) (last updated 6/30/2022)
• Bethel Wastewater Treatment Plant (PDF) (last updated 6/27/2022)
• Blue Hill Influent in Hancock County (PDF) (last updated 6/27/2022)
• Boothbay Harbor Sewer District (PDF) (last updated 7/1/2022)
• Brunswick Influent in Cumberland County (PDF) (last updated 6/27/2022)
• City of Bangor Wastewater Treatment Plant in Penobscot County (PDF) (last updated 6/27/2022)
• City of Calais Influent in Washington County (PDF) (last updated 7/1/2022)
• East Millinocket Wastewater Treatment Plant in Penobscot County (PDF) (last updated 7/1/2022)
• Fort Kent Maine Pumping Station in Aroostook County (PDF) (last updated 7/1/2022)
• Greater Augusta Utility District (GAUD) Wastewater Treatment Plant in Kennebec County (PDF) (last updated 6/27/2022)
• Guilford-Sangerville Sanitary District (PDF) (last updated 6/29/2022)
• Houlton Wastewater Plant in Aroostook County (PDF) (last updated 6/30/2022)
• Lewiston-Auburn Composite in Androscoggin County (PDF) (last updated 6/29/2022)
• Machias Influent in Washington County (PDF) (last updated 7/1/2022)
• Moosehead Headworks in Piscataquis County (PDF) (last updated 6/30/2022)
• Portland Water District, East End Wastewater Treatment Facility in Cumberland County (PDF) (last updated 7/1/2022)
• Portland Water District, Westbrook-Gorham Regional Wastewater Treatment Facility in Cumberland County (PDF) (last updated 7/1/2022)
• Presque Isle Utilities District Wastewater Treatment Plant in Aroostook County (PDF) (last updated 6/30/2022)
• Town of Yarmouth Wastewater Department (PDF) (last updated 6/30/2022)
• Wilton Sewer Plant Influent (PDF) (last updated 6/30/2022)
• York Sewer District Plant Influent in York County (PDF) (last updated 7/1/2022)

People infected with the virus that causes COVID-19 may shed it in the water that flows from their homes to public wastewater systems. This happens whether they have symptoms or not. Communities can track virus activity by looking for viral RNA in wastewater. Wastewater, or sewage, includes water that may contain human waste (toilets, showers, sinks). It also includes water from some other sources (rainwater, water for industrial use). To better understand the burden of COVID-19 in a community, Maine CDC and US CDC test wastewater for the virus. This helps to tailor public health actions to protect communities across the state.

For technical details about these data, visit the Biobot Technical Frequently Asked Questions.

Additional wastewater testing sites in Maine report data directly to US CDC. The sites are in these counties:

• Cumberland County
• Franklin County
• Knox County
• Lincoln County
• Oxford County
• Piscataquis County
• Sagadahoc County

Find these data on the US CDC COVID Data Tracker. Data will be added to the Data Tracker as they become available.