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All tracked reports and advisories

63,881 records from the sources we track, newest first. This list includes discharge reports, advisories and historical totals. Earlier versions are marked; the newest version sets the map status.

Sources are named in each row. List updated 2026-11-03 17:44 UTC.

Filter all 63,881 records Loads the last 90 days first, then the years a filter needs

Dates use the discharge start, or the report date when the start is missing.

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Every record, by state and year

Latest 100 records

Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater. Cyanobacteria (harmful blue-green algae) can make water unfit for contact; the issuing authority decides when its advisory ends. Treatment bypass: wastewater skips one or more treatment steps.

The latest 100 records
WhenReportStatus
to 1:05 AMTonawanda · Ellicott Creek · SSO · 9,921 gallons report · notice · mapended
Victor · industrial · Report · “30 Gallons per Minute Estimated” report · noticereported
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Baltimore City Department of Public Works (Sewer Overflow Map) · 5693 Liberty Heights Ave · SSO · volume not reported report · notice · mapongoing
Baltimore City DPW · Gwynns Run · 920 braddish ave · SSO · volume not reported report · notice · mapto Nov 16, 11:53 AM
BRISTOL WATER RECLAMATION FAC. · Sewer Main, 284 West St, Bristol, CT · SSO · 10 gallons report · notice · mapongoing
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Silver Lake · Algae advisory · volume in each report mapto Nov 17, 12:16 PM
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
to 12:30 AMMinoa · “Limestone Creek” · Behind Home · Report · 600 gallons in all ended
to 7:00 PMBaltimore City DPW · Gwynns Run · 2 N Wheeler Ave · SSO · 180 gallons report · notice · mapto Nov 4, 7:00 PM
Baltimore City DPW · Dead Run · 619 Nottingham Rd · SSO · 5 gallons report · notice · mapto Nov 15, 3:50 PM
to 4:00 PMNEW BRITAIN · Basement, 38 Lasalle St, New Britain, CT · SSO · 5 gallons report · notice · mapended
Baltimore City Department of Public Works (Sewer Overflow Map) · 1205 Ashland Ave · SSO · volume not reported report · notice · mapongoing
Western Virginia Water Authority · SSO · volume not reported report · noticeongoing
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
to 11:00 PMBaltimore City DPW · SSO · 2 gallons report · noticeended
to 9:00 PMBaltimore City DPW · “None” · 3915 Stokes Drive · SSO (earlier version) · 2 gallons report · noticeended
to 10:36 PMBaltimore City DPW · 3915 Stokes Dr · SSO · 448 gallons report · notice · mapended
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Bomoseen · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Bomoseen · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · “Private Quarry” · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory (earlier version) · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory (earlier version) · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Colchester Pond · Algae advisory · volume not reported report · notice · maplifted
Virginia DEQ Pollution Response Program (PReP), Blue Ridge Regional Office · Report · volume not reported report · notice · mapended
to 9:00 PMTown of La Plata · “Groundwater.” · 1014 Canterbury Lane · SSO · 80 gallons report · noticeended
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
PLAINVILLE WPCF · Quinnipiac River · Sewer Main, 4 Carol Dr, Plainville, CT · SSO · “Ongoing - TBD” report · notice · mapto Nov 6, 12:00 PM
to 2:00 PMHoward County DPW · Little Patuxent River · River Road · SSO · 33,000 gallons report · notice · mapended
Fauquier County Water and Sanitation… · SSO · volume not reported report · notice · mapreported
to 11:20 AMBoones Estates, MHC, LLC · “Groundwater” · 1091 Mount Zion Marlboro Rd · SSO · 400 gallons report · noticeended
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Silver Lake · Algae advisory (earlier version) · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
City of Norfolk Department of Utilities · “Oastes Creek” · SSO · volume not reported report · noticereported
to 10:00 PMHenrico County Department of Public Utilities · Meredith Branch · SSO · 1,125 gallons report · notice · mapended
RIDEM and RIDOH cyanobacteria advisories (RIDEM advisories layer) · “Willow Lake - RWP Ponds” · Algae advisory · volume not reported report · notice · mapto Nov 16, 8:35 AM
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Seymour Lake · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Baltimore City DPW · 2025 N Bentalou St · SSO · 2 gallons report · notice · mapreported
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
NYS DEC Harmful Algal Blooms Program (NYHABS) · Hedges Lake · Algae advisory · volume not reported report · notice · mapto Nov 12, 12:30 PM
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Iroquois · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Iroquois · Algae advisory · volume not reported report · notice · maplifted
Virginia DEQ Pollution Response Program (PReP), Northern Regional Office · SSO · volume not reported report · notice · mapreported
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Baltimore County DPW · “none” · 8113 Harford Rd · SSO · 30 gallons report · noticereported
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
to 1:00 PMWestern Virginia Water Authority · Roanoke River · SSO · 900 gallons report · notice · mapended
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
City of Richmond Department of Public… · SSO · volume not reported report · notice · mapongoing
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
to 9:00 AMSt. John Properties, Inc. · “Ground around inffluent pump area.” · 700 Lisbon Center Drive · SSO · 500 gallons report · noticeended
NYS DEC Harmful Algal Blooms Program (NYHABS) · Great Sacandaga Lake · Algae advisory · volume not reported report · notice · mapto Nov 12, 7:00 AM
to 8:30 PMWSSC Water · “reporter stated no waterways were affected. UT to Magruder Branch (I-P) runs directly behind the address of the overflow.” · 24413 Galeano Way · SSO · 242 gallons report · noticeended
NYS DEC Harmful Algal Blooms Program (NYHABS) · Beaverdam Lake · Algae advisory · volume not reported report · notice · mapto Nov 12, 7:00 AM
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
NYS DEC Harmful Algal Blooms Program (NYHABS) · Beaverdam Lake · Algae advisory · volume not reported report · notice · mapto Nov 12, 7:00 AM
NYS DEC Harmful Algal Blooms Program (NYHABS) · Beaverdam Lake · Algae advisory · volume not reported report · notice · mapto Nov 12, 7:00 AM
Waterbury WPCF · Lateral - Private, 10 Willow Ct, Waterbury, CT · SSO · 25 gallons report · notice · mapongoing
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory (earlier version) · volume not reported report · notice · maplifted
to 1:50 PMAnne Arundel County DPW · “no” · 1015 Brandon Shores Road · SSO · volume not reported report · noticeended
NYS DEC Harmful Algal Blooms Program (NYHABS) · Hyde Lake · Algae advisory · volume not reported report · notice · mapto Nov 11, 12:00 PM
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory (earlier version) · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lac Memphrémagog · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Woodstock · Ottauquechee River · Main wastewater treatment plant outfall. · Bypass (earlier version) · volume not reported report · notice · mapreported
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Silver Lake · Algae advisory (earlier version) · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lac Memphrémagog · Algae advisory · volume not reported report · notice · maplifted
to Oct 28, 7:26 PMBaltimore City DPW · Stony Run · 500 W University Pkwy · SSO · 28,520 gallons in all mapended
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Seymour Lake · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
to 7:30 PMWoodstock · Ottauquechee River · Main Plant · Bypass · 47,000 gallons report · notice · mapended
NYS DEC Harmful Algal Blooms Program (NYHABS) · Silver Lake · Algae advisory · volume not reported report · notice · mapto Nov 10, 11:16 AM
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
Vermont Department of Health (Cyanobacteria Tracker; volunteer and staff observations) · Lake Champlain · Algae advisory · volume not reported report · notice · maplifted
NJDEP Harmful Algal Bloom Program (Division of Water Monitoring, Standards and Pesticide Control) · Spruce Run Reservoir · Algae advisory · volume not reported report · notice · mapto Nov 13, 7:00 AM

Sources: DEC SPRTK workbook 'SPRTK_Data.xlsx' and older 'Sewage_Discharge_Reports.xlsx' (2013-2020), retrieved 2026-11-03 17:37 UTC; DEC Sewage Pollution Right to Know page, 'Recent NY-Alert Notifications' view, retrieved 2026-11-03 17:38 UTC; Cyanobacteria Tracker; volunteer and staff observations, retrieved 2026-11-03 17:40 UTC; Baltimore City DPW Sewer Overflow Map (SSO_Points2 map service), retrieved 2026-11-03 17:34 UTC; CT DEEP CSO/SSO Performance Dashboard (QScend), retrieved 2026-11-03 17:32 UTC; Virginia DEQ Pollution Response Program (PReP) pollution reports, sewage-related, retrieved 2026-11-03 17:39 UTC; MDE Reported Sewer Overflows (New for 2023), Maryland Open Data Portal (Socrata stgj-u72u), retrieved 2026-11-03 17:34 UTC; RIDEM advisories layer, retrieved 2026-11-03 17:38 UTC; DEC NYHABS current HAB reports (Current_HAB_Reports_DIL / Current_HAB_Reports_7_3_19) and Archived_HAB_Reports, retrieved 2026-11-03 17:36 UTC; VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, retrieved 2026-11-03 17:40 UTC; NJDEP Harmful Algal Bloom (HAB) Dashboard and its public feature service 'NJDEP_Production_HAB_Sampling_2021_public', retrieved 2026-11-03 17:35 UTC. A report's record id and times show when you hover or focus its "report" link.

All reports as CSV: 2026 · 2025 · 2024 · 2023 · 2022 · 2021 · 2020 · 2019 · 2018 · 2017 · 2016 · 2015 · 2014 · 2013 · 2012 · 2011 · 2010 · 2009 · 2008 · 2007 · 2006 · 2005 · 2004 · 2003 · 2002 · 2001 · 2000

Showing the latest 100 records of 63,881 records.