Connecticut / Events /

Treatment plant bypass: SOUTH WINDSOR, Aug 27, 2026

Ended (as reported) · SOUTH WINDSOR (CT DEEP Performance Dashboard)

Source: SOUTH WINDSOR (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 11342, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice

1. The reported outfall

Outfall reported by SOUTH WINDSOR: “Treatment Plant, 1 Vibert Rd, South Windsor, CT”. Location: no coordinates in the record or the outfall registry.

2. Waters named in the notice

The notice names: “CT River”. We place it on Connecticut River, CT. Matched by the name of the water in the source record.

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

Aug 27, 2026, 8:30 AM EDT

Ended

Aug 27, 2026, 8:45 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 11:20 UTC

What and how much

Type

Treatment plant bypass

Status in the record

Ended (as reported)

Material

“Fully treated raw sewage except disinfection”

Volume

8,333 gal (not stated whether estimated or measured)

Volume in the source's words

“8,333 gallons”

Advice

The record carries no advice text from SOUTH WINDSOR (CT DEEP Performance Dashboard).

Advice window

not stated in the record; the state's window on the methods page applies

Basis

not stated

What it does to the map, over time

• Advisory in effect Connecticut River: Discharge in progress, Aug 27, 2026, 8:30 AM EDT to Aug 27, 2026, 8:45 AM EDT
• Advisory in effect Connecticut River: Within the authority's advice window after the discharge ended, Aug 27, 2026, 8:45 AM EDT to Aug 29, 2026, 8:45 AM EDT
• Caution Connecticut River: Within the site's caution window after the discharge ended (data/rules.json), Aug 29, 2026, 8:45 AM EDT to Aug 30, 2026, 8:45 AM EDT

Source: intervals computed by DirtyWaterWatch (build/status.py) from this record and the rules on the methods page, as of 2026-11-02 11:56 UTC.

Source and revisions

Source

CT DEEP CSO/SSO Performance Dashboard (QScend)

Record id at the source

11342

Original notice

https://deepct.qscend.mygovcenter.com/cms/cms?id=1

Revision of

none (first record)

Revised by

no later revision

{
  "Reporting Utility": "SOUTH WINDSOR",
  "Status": "Closed",
  "Incident Type": "Sewage Bypass",
  "Weather Conditions": "Dry",
  "Date Bypass Began or was Discovered": "08/27/2026",
  "Event Start Time": "08:30 AM",
  "Location of Bypass": "Treatment Plant",
  "Type of Bypass": "Fully treated raw sewage except disinfection",
  "Cause of Bypass": "Electrical Equipment Failure",
  "Cause of Bypass Other Explanation": "Loss of power during mainteneance to level snesor in UV chamber.  Caused the UV system to go into a \"Limp\" mode where only the bottom two of 12 rows of bulbs were activated despite putting it in a manual overide mode.  There was only partial disinfection ",
  "How was Incident Discovered": "The electrical issues were noticed imediately but the affect on the disinfection weren't realized until about 9:30.",
  "Estimated Quantity or Rate of Discharge": "8333 gallons",
  "How was estimated Quantity or Rate Determined": "Flow at time of discharge was 1.6 MGD. 1600000 gpd / 24 hours/60 minutes*10 minutes=11,111 gallons *.75",
  "Reach Waterbody": "Yes",
  "Request ID": "11342",
  "Waterbody Name": "CT River",
  "Date Bypass Ended": "08/27/2026",
  "Event End Time": "08:45 AM",
  "Final Quantity": "8,333 gallons",
  "How was Final Volume Determined": null,
  "How incident was resolved": "We will need to contact the manufacturer to get this power seperated so we can safely lock out the bank without losing power to this critical sensor and cooling pumps. Additionally we should have away to overide this \"Limp\" mode. In the meantime we hold o",
  "Municipality": "South Windsor",
  "Address": "1 Vibert Rd, South Windsor, CT",
  "_view": "SSO DATA VIEW"
}