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Sewage discharges in Vermont

25 waters tracked: 2 red, 1 yellow, 0 unresolved, 22 with no current report, as of Nov 2, 2026, 6:56 AM EST. 5 discharges reported in the last 30 days.

Source: DirtyWaterWatch statuses from the 1 feed listed under Coverage below, as of 2026-11-02 11:56 UTC.

Source: water outlines from OpenBoatLaunch and OpenStreetMap contributors (ODbL); outfalls from EPA ECHO and the state outfall layers; modeled reaches computed by DirtyWaterWatch from USGS NLDI, NHDPlus and the nearest USGS gauge (Jobson 1996); basemap OpenFreeMap and OpenMapTiles.

Advisory in effect Advisory in effect: 2 waters

Caution Caution: 1 water

No current report No current report: 22 waters

Dischargers

Coverage

What the authority says about the period after a discharge

48 hours after the discharge ends. Basis: “10 V.S.A. 1295(e): signs stay in place for 48 hours after the untreated discharge has stopped; DEC advice: avoid swimming, wading, boating or fishing after overflows”

Source: rules.json red.by_state.VT (research/nh-vt/report.md).

How long a water stays coloured, in every state

Feeds we read

29 other sources considered for Vermont are listed on the sources page.

Discharges in Vermont over the years

  • Discharge events, last 12 months175Dec 2025 to Nov 2026
  • Days with a discharge, last 12 months147Dec 2025 to Nov 2026
  • Hours under advisory, last 12 months4,394Dec 2025 to Nov 2026; on at least one water in the state
  • 2026 season under advisory56%May to October; 2,455 h

Discharge events per month

1,016 events, Jan 2022 to Nov 2026. Counted from 998 verified or annual reports, 18 public notices.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Bypass, blended or other

Source: Vermont DEC sewage overflows page. Covered 2022-01-01 to 2026-11-02.

Show table
Discharge events per month
MonthCombined sewer overflowSanitary sewer overflowBypass, blended or otherTotalCounted fromCoverage
Jan 20220044Verified or annual reports
Feb 202291515Verified or annual reports
Mar 20225229Verified or annual reports
Apr 2022150318Verified or annual reports
May 2022121215Verified or annual reports
Jun 202271513Reports and notices
Jul 20225027Verified or annual reports
Aug 2022191020Verified or annual reports
Sep 202290312Reports and notices
Oct 20225139Verified or annual reports
Nov 2022100212Verified or annual reports
Dec 2022103316Verified or annual reports
Jan 20236118Reports and notices
Feb 20230336Verified or annual reports
Mar 20230011Public notices (no report yet)
Apr 20232215Verified or annual reports
May 20231113Verified or annual reports
Jun 2023110011Verified or annual reports
Jul 202336131766Reports and notices
Aug 2023305540Verified or annual reports
Sep 202323712Reports and notices
Oct 202391313Verified or annual reports
Nov 20232125Verified or annual reports
Dec 202316101339Reports and notices
Jan 20243227Verified or annual reports
Feb 20240235Reports and notices
Mar 2024131721Verified or annual reports
Apr 202450611Verified or annual reports
May 202471311Verified or annual reports
Jun 2024164323Verified or annual reports
Jul 20247601288Verified or annual reports
Aug 2024582464Verified or annual reports
Sep 202480513Verified or annual reports
Oct 20245117Reports and notices
Nov 202462210Verified or annual reports
Dec 2024100313Verified or annual reports
Jan 20250022Verified or annual reports
Feb 20250101Verified or annual reports
Mar 2025201930Reports and notices
Apr 202581211Verified or annual reports
May 2025593668Verified or annual reports
Jun 2025141116Verified or annual reports
Jul 2025201324Reports and notices
Aug 202533612Reports and notices
Sep 2025111214Verified or annual reports
Oct 2025241328Verified or annual reports
Nov 20251023Verified or annual reports
Dec 2025153523Verified or annual reports
Jan 20261023Verified or annual reports
Feb 20260202Verified or annual reports
Mar 2026100212Reports and notices
Apr 2026112518Verified or annual reports
May 2026200222Verified or annual reports
Jun 2026370643Verified or annual reports
Jul 2026111820Verified or annual reports
Aug 2026170219Reports and notices
Sep 20266028Verified or annual reports
Oct 20262125Verified or annual reports
Nov 20260000

Hours under advisory per month

Hours at least one water in the state was under an advisory, by the map's red rules.

  • Advisory in effect

183 discharge events have no reported end and no ongoing status; under the status rules they set caution, not an advisory, and add no hours here. 5 events reported to last more than 31 days are counted to 31 days. Official beach and cyanobacteria advisories are counted on water pages only.

Source: Vermont DEC sewage overflows page. Covered 2016-01-05 to 2026-11-02.

Show table
Hours under advisory per month
MonthHours under advisoryFrom discharge windowsHours in monthCoverage
Jan 2022253253744
Feb 2022379379672
Mar 2022662662744
Apr 2022293293720
May 2022173173744
Jun 2022153153720
Jul 2022219219744
Aug 2022276276744
Sep 2022167167720
Oct 2022432432744
Nov 2022168168720
Dec 2022292292744
Jan 2023248248744
Feb 2023504504672
Mar 202300744
Apr 2023138138720
May 2023101101744
Jun 2023207207720
Jul 2023626626744
Aug 2023662662744
Sep 2023341341720
Oct 2023387387744
Nov 2023127127720
Dec 2023371371744
Jan 2024394394744
Feb 2024121121696
Mar 2024421421744
Apr 2024375375720
May 2024462462744
Jun 2024405405720
Jul 2024519519744
Aug 2024414414744
Sep 2024488488720
Oct 2024224224744
Nov 2024365365720
Dec 2024175175744
Jan 20256767744
Feb 20256666672
Mar 2025689689744
Apr 2025465465720
May 2025479479744
Jun 2025461461720
Jul 2025316316744
Aug 2025481481744
Sep 2025223223720
Oct 2025401401744
Nov 2025198198720
Dec 2025334334744
Jan 2026605605744
Feb 2026356356672
Mar 2026235235744
Apr 2026409409720
May 2026332332744
Jun 2026399399720
Jul 2026512512744
Aug 2026534534744
Sep 2026566566720
Oct 2026112112744
Nov 20260032

Days with a discharge per month

A day counts when any counted discharge was under way on it (start to reported end, local time); an event with no end counts its start day.

Source: Vermont DEC sewage overflows page. Covered 2022-01-01 to 2026-11-02.

Show table
Days with a discharge per month
MonthDays with a dischargeCoverage
Jan 202216
Feb 202218
Mar 202228
Apr 20228
May 20226
Jun 20226
Jul 20225
Aug 20226
Sep 20225
Oct 202215
Nov 20226
Dec 20228
Jan 20238
Feb 202320
Mar 20231
Apr 20234
May 20235
Jun 20235
Jul 202324
Aug 202316
Sep 202314
Oct 202313
Nov 20236
Dec 202312
Jan 202412
Feb 202410
Mar 202413
Apr 202417
May 202414
Jun 202413
Jul 202416
Aug 202414
Sep 202415
Oct 20247
Nov 20248
Dec 20244
Jan 20252
Feb 20252
Mar 202524
Apr 202516
May 202515
Jun 202511
Jul 20258
Aug 202519
Sep 20256
Oct 202513
Nov 20257
Dec 202513
Jan 202624
Feb 202611
Mar 20267
Apr 202615
May 202610
Jun 202612
Jul 202621
Aug 202610
Sep 202620
Oct 20264
Nov 20260

Discharge events per year, 2016 to 2026

2,182 events, 2016 to 2026.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Bypass, blended or other
  • Partly covered or sparse source

Source: Vermont DEC sewage overflows page. Covered 2016-01-05 to 2026-11-02.

Show table
Discharge events per year, 2016 to 2026
YearCombined sewer overflowSanitary sewer overflowBypass, blended or otherTotalCoverage
20161231812153Partly covered or sparse source
20171542019193
20181761327216
20192153640291
20201181332163
20211011831150
20221061034150
20231154054209
20242071551273
20251751641232
2026115631152

Reported volume per year

Gallons, summed from the 1,267 events that gave a number (915 did not).

  • Partly covered or sparse source

915 of 2,182 events gave no volume as a number (834 gave a range); only numbers are summed. Vermont volumes were range buckets before 2024 (">10,000 to 100,000 gallons"); those records have no number and are not summed.

Source: Vermont DEC sewage overflows page. Covered 2016-01-05 to 2026-11-02.

Show table
Reported volume per year
YearGallonsEvents with a numberEvents withoutCoverage
20165,039,75830123Partly covered or sparse source
20175,334,44091102
201845,564,80013284
201935,235,497107184
20207,290,3346499
202111,137,6067377
202211,721,9338862
202384,632,65870139
2024108,961,53423538
202553,394,1892284
202624,158,1051493

Hours under advisory per year

Hours under advisory each year; 2026 to date.

  • Advisory in effect
  • Partly covered or sparse source

183 discharge events have no reported end and no ongoing status; under the status rules they set caution, not an advisory, and add no hours here. 5 events reported to last more than 31 days are counted to 31 days. Official beach and cyanobacteria advisories are counted on water pages only.

Source: Vermont DEC sewage overflows page. Covered 2016-01-05 to 2026-11-02.

Show table
Hours under advisory per year
YearHours under advisoryShare of the yearCoverage
20162,58829.5%Partly covered or sparse source
20172,65630.3%
20184,20948.0%
20193,78843.2%
20203,42038.9%
20213,76743.0%
20223,46839.6%
20233,71142.4%
20244,36249.7%
20254,17947.7%
20264,06055.4%

Share of the May to October season under advisory

Share of the hours from May 1 to October 31 with an advisory in effect.

  • Advisory in effect

183 discharge events have no reported end and no ongoing status; under the status rules they set caution, not an advisory, and add no hours here. 5 events reported to last more than 31 days are counted to 31 days. Official beach and cyanobacteria advisories are counted on water pages only.

Source: Vermont DEC sewage overflows page. Covered 2016-01-05 to 2026-11-02.

Show table
Share of the May to October season under advisory
SeasonShare under advisoryHours under advisoryHours coveredSeason hoursPartly covered
201632.9%1,4514,4164,416
201739.4%1,7414,4164,416
201855.2%2,4404,4164,416
201948.3%2,1354,4164,416
202055.5%2,4524,4164,416
202152.6%2,3254,4164,416
202232.2%1,4214,4164,416
202352.6%2,3244,4164,416
202456.9%2,5114,4164,416
202553.4%2,3604,4164,416
202655.6%2,4554,4164,416

Discharge events by calendar month, all years

Every counted discharge event, by the calendar month it began.

Months are summed over every year a source covers; the table gives the number of years behind each month.

Source: Vermont DEC sewage overflows page. Covered 2016-01-05 to 2026-11-02.

Show table
Discharge events by calendar month, all years
MonthEventsYears of records
Jan9711
Feb11511
Mar11211
Apr16211
May20611
Jun25411
Jul35411
Aug32511
Sep15111
Oct16611
Nov10011
Dec14010

Discharge events by outfall

The 10 outfalls with the most events of 752, all years.

Source: Vermont DEC sewage overflows page. Covered 2016-01-05 to 2026-11-02.

Show table
Discharge events by outfall
OutfallDischargerEvents
001 CSO # 1 - Calvary CemeteryRutland141
002 CSO # 2 - Home Plate, Ball FieldRutland123
005 CSO # 5 - West Street SiphonRutland94
003 CSO 003- Bailey AveMontpelier83
CSO # 3 - School Street & CSO # 4 - Meadow Street - Combined - Third Base, BallRutland82
001 CSO 001- Taylor St BridgeMontpelier79
West Street SiphonRutland50
009 CSO 009 - 152 Main St.Montpelier47
Pine Street CSOBurlington Main45
007 CSO 007 -10 Main St. (siphon)Montpelier43
Other outfalls (742)1,394
Outfall not stated1
How these charts are counted

Discharge events are counted once: where a source publishes both public notices and verified reports (MassDEP, Vermont DEC), a discharger's month with any verified report counts its verified reports only, and other months count notices. Revisions are folded into the record they revise, and EPA copies of a state report are not counted twice. Monthly and yearly totals (Maine DEP, EPA discharge monitoring reports, Portsmouth) are shown on their own and never added to the event counts. Hours under advisory follow the map's red rules. A muted band marks periods no source covers: a gap there is missing data, not a quiet month.

  • Vermont DEC sewage overflows page: 2016-01-05 to now

Discharges in the last 30 days

Discharges in Vermont in the last 30 days, newest first
StartEnd Water Discharger OutfallTypeVolumeSourceLinks
Oct 27, 2026, 12:45 PM EDT Oct 27, 2026, 7:30 PM EDT “Ottauquechee River” (not placed) Woodstock Main Plant Treatment plant bypass 47,000 gal Woodstock (incident report on the VT DEC Sewage Overflows page; reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record incident:7110, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice Event: Treatment plant bypass, Woodstock, Oct 27, 2026, 12:45 PM EDT
Oct 23, 2026, 7:00 AM EDT not reported Connecticut River, VT Hartford - WRJ White River Junction Treatment plant bypass 450,000 gal Hartford - WRJ (incident report on the VT DEC Sewage Overflows page; pending DEC review) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record pending:HQS-H6FX-2GH8F, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice Event: Treatment plant bypass, Hartford - WRJ, Oct 23, 2026, 7:00 AM EDT · Map
Oct 14, 2026, 5:00 AM EDT Oct 14, 2026, 8:00 AM EDT Connecticut River, VT Lunenburg FD2 Pump Station Sanitary sewer overflow 1,000 gal Lunenburg FD2 (incident report on the VT DEC Sewage Overflows page; reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record incident:7107, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice Event: Sanitary sewer overflow, Lunenburg FD2, Oct 14, 2026, 5:00 AM EDT · Map
Oct 13, 2026, 10:55 PM EDT Oct 14, 2026, 1:15 AM EDT Passumpsic River, VT St Johnsbury 006 CSO – 06: (Bay Street – south of CVPS) Combined sewer overflow 75,236 gal St Johnsbury (incident report on the VT DEC Sewage Overflows page; reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record incident:7105, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice Event: Combined sewer overflow, St Johnsbury, Oct 13, 2026, 10:55 PM EDT · Map
Oct 13, 2026, 10:55 PM EDT Oct 14, 2026, 1:15 AM EDT Passumpsic River, VT St Johnsbury 014 CSO – 14: (Mill Street) Combined sewer overflow 43,895 gal St Johnsbury (incident report on the VT DEC Sewage Overflows page; reviewed by DEC) via VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page, record incident:7106, the source gives no report time, retrieved 2026-11-02 11:55 UTC · notice Event: Combined sewer overflow, St Johnsbury, Oct 13, 2026, 10:55 PM EDT · Map