Treatment plant bypass: GREENWICH (GRASS ISLAND WPCF), Oct 2, 2026

Ended (as reported) · GREENWICH (GRASS ISLAND WPCF) (CT DEEP Performance Dashboard)

Source: GREENWICH (GRASS ISLAND WPCF) (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 11560, the source gives no report time, retrieved 2026-11-02 11:53 UTC · notice

Colours no water as of Nov 2, 2026, 6:56 AM EST: the windows on the methods page have passed, or the record has no time to count from.

A report is not a test of the water. See how statuses are worked out.

1. The reported outfall

Outfall reported by GREENWICH (GRASS ISLAND WPCF) (CT0100234): “Treatment Plant, 250A Shore Rd, Greenwich, CT”. Location: no coordinates in the record or the outfall registry.

2. Waters named in the notice

The notice names: “Greenwich Harbor”. 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: Oct 2, 2026, 8:00 AM EDT
Ended: Oct 2, 2026, 8:15 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 11:53 UTC

What and how much

Type: Treatment plant bypass
Status in the record: Ended (as reported)
Material: “Partially Treated Raw Sewage”
Volume: “Approximately 50 gallons or less” (estimated)
Volume in the source's words: “Approximately 50 gallons or less”

Advice

The record carries no advice text from GREENWICH (GRASS ISLAND WPCF) (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: 11560
Original notice: https://deepct.qscend.mygovcenter.com/cms/cms?id=1
Revision of: none (first record)
Revised by: no later revision

Every field of the record

All fields of event ct-deep:11560
`event_id`	ct-deep:11560
`source_id`	ct-deep
`source_record_id`	11560
`parent_event_id`	null
`event_type`	plant_bypass
`status`	ended
`discharger_id`	ct-greenwich-grass-island
`discharger_name`	GREENWICH (GRASS ISLAND WPCF)
`npdes_permit`	CT0100234
`outfall_id`	null
`outfall_name`	Treatment Plant, 250A Shore Rd, Greenwich, CT
`waterbody_text`	Greenwich Harbor
`water_slugs`	[]
`water_match`	none
`lat`	null
`lon`	null
`coord_source`	null
`coord_precision_m`	null
`started_at`	2026-10-02T08:00:00-04:00
`ended_at`	2026-10-02T08:15:00-04:00
`time_precision`	minute
`reported_at`	null
`published_at`	null
`source_updated_at`	null
`fetched_at`	2026-11-02T11:53:46Z
`material`	Partially Treated Raw Sewage
`volume_gal`	null
`volume_text`	Approximately 50 gallons or less
`estimate_flag`	estimated
`authority`	GREENWICH (GRASS ISLAND WPCF) (CT DEEP Performance Dashboard)
`advice_text`	null
`advice_window_hours`	null
`advice_window_basis`	null
`source_url`	https://deepct.qscend.mygovcenter.com/cms/cms?id=1
`parse_error`	null
`fixture`	false
`file`	events/ct-deep~3A11560.json
`duplicate_of`	null
`placement_note`	null
`unplaced_reason`	null
`set_aside`	null
`superseded`	null
`reach`	null
`reach_band`	null

The source's record (raw)

{
  "Reporting Utility": "GREENWICH (GRASS ISLAND WPCF)",
  "Status": "Closed",
  "Incident Type": "Sewage Bypass",
  "Weather Conditions": "Dry",
  "Date Bypass Began or was Discovered": "10/02/2026",
  "Event Start Time": "08:00 AM",
  "Location of Bypass": "Treatment Plant",
  "Type of Bypass": "Partially Treated Raw Sewage",
  "Cause of Bypass": "Other",
  "Cause of Bypass Other Explanation": "Contractor while performing work on the primary settling tank upgrades was moving equipment and needed to move a hose that was running supernantent to a manhole structure and the valve was not fully closed so a small amount leaked out of the house onto th",
  "How was Incident Discovered": "By Sewer Division staff member",
  "Estimated Quantity or Rate of Discharge": "Approximately 50 gallons or less",
  "How was estimated Quantity or Rate Determined": "Based on visual observation",
  "Reach Waterbody": "Yes",
  "Request ID": "11560",
  "Waterbody Name": "Greenwich Harbor",
  "Date Bypass Ended": "10/02/2026",
  "Event End Time": "08:15 AM",
  "Final Quantity": "Approximately 50 gallons or less",
  "How was Final Volume Determined": null,
  "How incident was resolved": "The valve was fully closed and the contractor was notified.  Additional safeguards have been put in place to limit chance of recurrence.",
  "Municipality": "Greenwich",
  "Address": "250A Shore Rd, Greenwich, CT",
  "_view": "SSO DATA VIEW",
  "_dww_note": [
    "receiving water 'Greenwich Harbor' has no matching water record"
  ]
}

Personal fields (names, emails, phone numbers of staff) are removed from raw records before they are stored.