Vermont / Events /

Combined sewer overflow: Montpelier, May 14, 2026

Ended (as reported) · Montpelier (incident report on the VT DEC Sewage Overflows page; reviewed by DEC)

Source: Montpelier (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:6997, the source gives no report time, retrieved 2026-11-02 10:55 UTC · notice

1. The reported outfall

Outfall reported by Montpelier (VT0100196 outfall 007): “CSO 007 - 10 Main St. (siphon)”. Location: 44.25946, -72.57721 from the outfall registry (the record has no coordinates).

Source: EPA ECHO outfall inventory matched in data/outfalls-ne.json (match: geometry), permit VT0100196 outfall 007.

2. Waters named in the notice

The notice names: “North Branch”. We place it on Winooski River, VT. Matched by the outfall's ID in the outfall registry, which places each outfall on a water.

outfall VT0100196 007 (geometry, 110 m)

3. Modeled downstream reach

No modeled reach for this record in this build.

Open on the main map

When: three different times

The time of the event, the time the source reported, published or updated it, and the time we fetched it are kept apart. Times are shown in New England time; the record keeps the original offsets.

Started

May 14, 2026, 10:27 PM EDT

Ended

May 15, 2026, 2:52 AM EDT

Precision

Known to the minute

Reported to the source

not given

Published

not given

Source last updated

not given

We fetched it

2026-11-02 10:55 UTC

What and how much

Type

Combined sewer overflow

Status in the record

Ended (as reported)

Material

“untreated sewage and stormwater (authorized wet weather CSO overflow)”

Volume

32,353 gal (estimated)

Volume in the source's words

“32353”

Advice

“Avoid swimming, wading, boating, or fishing after wastewater overflow, releases, or illicit discharges!”

Advice window

48 hours

Basis

VT DEC Notice of Untreated or Unpermitted Discharges page (advice); 10 V.S.A. § 1295(e) and DEC: temporary signs kept posted 48 hours after the discharge has stopped

Source and revisions

Source

VT DEC Public Alerts (untreated discharge alerts) on the Sewage Overflows report page

Record id at the source

incident:6997

Original notice

https://anrweb.vt.gov/DEC/WWInventory/UpdateFacilityIncident.aspx?F…

Revision of

none (first record)

Revised by

no later revision

{
  "Start Date": "2026-05-14",
  "End Date": "2026-05-15",
  "Start/End Times": "10:27 pm to 02:52 am",
  "Municipality": "City of Montpelier",
  "Location": "CSO 007 - 10 Main St. (siphon)",
  "Waterbody": "North Branch",
  "Nature of Incident": "Authorized Wet Weather CSO Overflow",
  "Estimated Volume (gallons)": "32353",
  "Wastewater Treatment Facility": "Montpelier [updateFacility.aspx?F=9&option=view]",
  "Submission Number": "HQN-JF93-9GZZ2",
  "ID": "6997",
  "_table": "Wet Weather CSO Incident Reports (reviewed)",
  "_facility_url": "https://anrweb.vt.gov/DEC/WWInventory/updateFacility.aspx?F=9&option=view",
  "_match_notes": null
}