Connecticut / Events /

Treatment plant bypass: MDC TREATMENT PLANT, Sep 7, 2026

Ended (as reported) · MDC TREATMENT PLANT (CT DEEP Sewage Right-to-Know annual report 2026)

Source: MDC TREATMENT PLANT (CT DEEP Sewage Right-to-Know annual report 2026) via ct-deep-annual, record x267072f70977, published Feb 25, 2026, 4:08 PM EST, retrieved 2026-11-02 11:53 UTC · notice

1. The reported outfall

Outfall reported by MDC TREATMENT PLANT: “Treatment Plant, 231 Brainard Road, Hartford, 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

Sep 7, 2026

Ended

Sep 7, 2026

Precision

Known to the day only

Reported to the source

not given

Published

Feb 25, 2026, 4:08 PM EST

Source last updated

not given

We fetched it

2026-11-02 11:53 UTC

What and how much

Type

Treatment plant bypass

Status in the record

Ended (as reported)

Material

not stated

Volume

8.12 million gal (estimated)

Volume in the source's words

“8120000”

Advice

The record carries no advice text from MDC TREATMENT PLANT (CT DEEP Sewage Right-to-Know annual report 2026).

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, Sep 7, 2026, 12:00 AM EDT to Sep 7, 2026, 11:59 PM EDT
• Advisory in effect Connecticut River: Within the authority's advice window after the discharge ended, Sep 7, 2026, 11:59 PM EDT to Sep 9, 2026, 11:59 PM EDT
• Caution Connecticut River: Within the site's caution window after the discharge ended (data/rules.json), Sep 9, 2026, 11:59 PM EDT to Sep 10, 2026, 11:59 PM 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-annual

Record id at the source

x267072f70977

Original notice

https://portal.ct.gov/-/media/deep/water/municipal_wastewater/srtk-…

Revision of

none (first record)

Revised by

no later revision

{
  "Reporting Utility": "MDC TREATMENT PLANT",
  "Status": null,
  "Incident Type": "NPDES PERMITTED BYPASS OF SECONDARY TREATMENT",
  "Weather Conditions": null,
  "Date Bypass Began or was Discovered": "46272",
  "Event Start Time": null,
  "Location of Bypass": "Treatment Plant",
  "Type of Bypass": null,
  "Cause of Bypass": "Excessive Flows - Storm Event",
  "Cause of Bypass Other Explanation": null,
  "How was Incident Discovered": "SCADA",
  "Estimated Quantity or Rate of Discharge": "REPORTED THROUGH MOR",
  "How was estimated Quantity or Rate Determined": null,
  "Reach Waterbody": "Yes",
  "Request ID": null,
  "Waterbody Name": "CT River",
  "Date Bypass Ended": "46272",
  "Event End Time": null,
  "Final Quantity": "8.12 MGD",
  "Final Volume Converted for counting": "8120000",
  "How was Final Volume Determined": "16.09 hours",
  "How incident was resolved": "Rain stopped",
  "Municipality": "Hartford",
  "Address": "231 Brainard Road, Hartford, CT",
  "_view": "SSO DATA VIEW",
  "_source_file": {
    "file": "2026-sso-bypass.xlsx",
    "url": "https://portal.ct.gov/-/media/deep/water/municipal_wastewater/srtk-annual-report/2026-sso-bypass.xlsx",
    "sheet": "MDC",
    "row": 100,
    "report_year": 2026
  }
}