Connecticut / Events /

Sanitary sewer overflow: Greater New Haven WPCA, Sep 4, 2026

Ended (as reported) · Greater New Haven WPCA (CT DEEP Performance Dashboard)

Source: Greater New Haven WPCA (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 11405, the source gives no report time, retrieved 2026-11-02 11:20 UTC · notice

1. The reported outfall

Outfall reported by Greater New Haven WPCA (CT0100366): “Manhole, State St, Hamden, CT”. Location: no coordinates in the record or the outfall registry.

2. Waters named in the notice

The notice names no water. Not placed on a tracked water.

3. Modeled downstream reach

Not modeled: the reach model runs on rivers above the head of tide only.

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 4, 2026, 10:00 AM EDT

Ended

Sep 4, 2026, 10:45 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

Sanitary sewer overflow

Status in the record

Ended (as reported)

Material

“Raw Sewage”

Volume

“Less than 50 gallons” (estimated)

Volume in the source's words

“Less than 50 gallons”

Advice

The record carries no advice text from Greater New Haven WPCA (CT DEEP Performance Dashboard).

Advice window

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

Basis

not stated

Source and revisions

Source

CT DEEP CSO/SSO Performance Dashboard (QScend)

Record id at the source

11405

Original notice

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

Revision of

none (first record)

Revised by

no later revision

{
  "Reporting Utility": "GNHWPCA",
  "Status": "Closed",
  "Incident Type": "Sewage Bypass",
  "Weather Conditions": "Dry",
  "Date Bypass Began or was Discovered": "09/04/2026",
  "Event Start Time": "10:00 AM",
  "Location of Bypass": "Manhole",
  "Type of Bypass": "Raw Sewage",
  "Cause of Bypass": "Sewage Line Blockage - Grease",
  "Cause of Bypass Other Explanation": "Contractor cleaning grease from the pump station wet well caused the spill during the cleaning operation.",
  "How was Incident Discovered": "Contractor called it up the grease spill.",
  "Estimated Quantity or Rate of Discharge": "Less than 50 Gallons",
  "How was estimated Quantity or Rate Determined": "Field estimate by crew.",
  "Reach Waterbody": "No",
  "Request ID": "11405",
  "Waterbody Name": "N/A",
  "Date Bypass Ended": "09/04/2026",
  "Event End Time": "10:45 AM",
  "Final Quantity": "Less than 50 gallons",
  "How was Final Volume Determined": null,
  "How incident was resolved": "Contractor stopped the cleaning operation to clean the spill. the contractor used a vac truck to clean the road and area around the manhole.",
  "Municipality": "Hamden",
  "Address": "State St, Hamden, CT",
  "_view": "SSO DATA VIEW"
}