Sanitary sewer overflow: GREENWICH (GRASS ISLAND WPCF), May 28, 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 10712, the source gives no report time, retrieved 2026-11-02 11:20 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): “Lateral - Private, 180 West Putnam Avenue, Greenwich, CT”. Location: no coordinates in the record or the outfall registry.

2. Waters named in the notice

The notice names: “Horseneck Brook”. 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: May 28, 2026, 7:45 AM EDT
Ended: May 29, 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: Sanitary sewer overflow
Status in the record: Ended (as reported)
Material: “Raw Sewage”
Volume: 500 gal (estimated)
Volume in the source's words: “Approximately 500 gallons”

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: 10712
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:10712
`event_id`	ct-deep:10712
`source_id`	ct-deep
`source_record_id`	10712
`parent_event_id`	null
`event_type`	sso
`status`	ended
`discharger_id`	ct-greenwich-grass-island
`discharger_name`	GREENWICH (GRASS ISLAND WPCF)
`npdes_permit`	CT0100234
`outfall_id`	null
`outfall_name`	Lateral - Private, 180 West Putnam Avenue, Greenwich, CT
`waterbody_text`	Horseneck Brook
`water_slugs`	[]
`water_match`	none
`lat`	null
`lon`	null
`coord_source`	null
`coord_precision_m`	null
`started_at`	2026-05-28T07:45:00-04:00
`ended_at`	2026-05-29T08:45:00-04:00
`time_precision`	minute
`reported_at`	null
`published_at`	null
`source_updated_at`	null
`fetched_at`	2026-11-02T11:20:59Z
`material`	Raw Sewage
`volume_gal`	500
`volume_text`	Approximately 500 gallons
`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~3A10712.json
`placement_note`	null
`unplaced_reason`	null
`set_aside`	null
`superseded`	null
`duplicate_of`	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": "05/28/2026",
  "Event Start Time": "07:45 AM",
  "Location of Bypass": "Lateral - Private",
  "Type of Bypass": "Raw Sewage",
  "Cause of Bypass": "Sewage Line Blockage - Grease",
  "Cause of Bypass Other Explanation": "Backup came out of fresh air vent on sewer lateral on side of auto service station at 180 West Putnam Avenue",
  "How was Incident Discovered": "Reported by Auto dealer adjacent to the sewer main",
  "Estimated Quantity or Rate of Discharge": "Approximately 500 gallons",
  "How was estimated Quantity or Rate Determined": "Visual observations made by contractor on site who cleared the stoppage",
  "Reach Waterbody": "Yes",
  "Request ID": "10712",
  "Waterbody Name": "Horseneck Brook",
  "Date Bypass Ended": "05/29/2026",
  "Event End Time": "08:45 AM",
  "Final Quantity": "Approximately 500 gallons",
  "How was Final Volume Determined": null,
  "How incident was resolved": "Jetted the line to clear the partial blockage in the sewer main",
  "Municipality": "Greenwich",
  "Address": "180 West Putnam Avenue, Greenwich, CT",
  "_view": "SSO DATA VIEW",
  "_dww_note": [
    "receiving water 'Horseneck Brook' has no matching water record"
  ]
}

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