Sanitary sewer overflow: WINCHESTER, TOWN OF, Jan 10, 2024

Ongoing (as reported) · WINCHESTER, TOWN OF (MassDEP sewage notification portal)

Source: WINCHESTER, TOWN OF (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 06e8535a-e80e-4417-bfdc-2d91b31af068, published Jan 11, 2024, 8:22 AM EST, retrieved 2026-11-02 10:58 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 WINCHESTER, TOWN OF. Location: 42.44181, -71.14925, given in the source record.

2. Waters named in the notice

The notice names: “Surface (Upper Mystic Lake)”. We place it on Upper Mystic Lake, MA. Matched by the name of the water in the source record.

3. Modeled downstream reach

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

Source: water outlines from OpenBoatLaunch and OpenStreetMap contributors (ODbL); outfalls from EPA ECHO and the state outfall layers; modeled reaches computed by DirtyWaterWatch from USGS NLDI, NHDPlus and the nearest USGS gauge (Jobson 1996); basemap OpenFreeMap and OpenMapTiles.

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: Jan 10, 2024, 5:30 AM EST
Ended: ongoing, as last reported
Precision: Known to the minute
Reported to the source: not given
Published: Jan 11, 2024, 8:22 AM EST
Source last updated: not given
We fetched it: 2026-11-02 10:58 UTC

What and how much

Type: Sanitary sewer overflow
Status in the record: Ongoing (as reported)
Material: “SSO – System Surcharging Under High Flow Conditions”
Volume: not reported (not stated whether estimated or measured)
Volume in the source's words: none

Advice

“Avoid contact with these water bodies for 48 hours after the discharge or overflow ceases due to increased health risks from bacteria and other pollutants. See website for more information on whether specific resource areas, such as bathing beaches, are affected.”
WINCHESTER, TOWN OF (MassDEP sewage notification portal) · 314 CMR 16.04(10)(g)

Advice window: 48 hours
Basis: 314 CMR 16.04(10)(g)

Source and revisions

Source: MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/)
Record id at the source: 06e8535a-e80e-4417-bfdc-2d91b31af068
Original notice: https://eeaonline.eea.state.ma.us/portal/dep/cso-data-portal/detail…
Revision of: none (first record)
Revised by: no later revision

Every field of the record

All fields of event ma-massdep:06e8535a-e80e-4417-bfdc-2d91b31af068
`event_id`	ma-massdep:06e8535a-e80e-4417-bfdc-2d91b31af068
`source_id`	ma-massdep
`source_record_id`	06e8535a-e80e-4417-bfdc-2d91b31af068
`parent_event_id`	null
`event_type`	sso
`status`	ongoing
`discharger_id`	ma-winchester-town-of
`discharger_name`	WINCHESTER, TOWN OF
`npdes_permit`	null
`outfall_id`	null
`outfall_name`	null
`waterbody_text`	Surface (Upper Mystic Lake)
`water_slugs`	["upper-mystic-lake-ma"]
`water_match`	name
`lat`	42.44181
`lon`	-71.14925
`coord_source`	source
`coord_precision_m`	null
`started_at`	2024-01-10T05:30:00-05:00
`ended_at`	null
`time_precision`	minute
`reported_at`	null
`published_at`	2024-01-11T08:22:16-05:00
`source_updated_at`	null
`fetched_at`	2026-11-02T10:58:11Z
`material`	SSO – System Surcharging Under High Flow Conditions
`volume_gal`	null
`volume_text`	null
`estimate_flag`	unknown
`authority`	WINCHESTER, TOWN OF (MassDEP sewage notification portal)
`advice_text`	Avoid contact with these water bodies for 48 hours after the discharge or overflow ceases due to increased health risks from bacteria and other pollutants. See website for more information on whether specific resource areas, such as bathing beaches, are affected.
`advice_window_hours`	48
`advice_window_basis`	314 CMR 16.04(10)(g)
`source_url`	https://eeaonline.eea.state.ma.us/portal/dep/cso-data-portal/details/06e8535a-e80e-4417-bfdc-2d91b31af068
`parse_error`	null
`fixture`	false
`file`	events/ma-massdep~3A06e8535a-e80e-4417-bfdc-2d91b31af068.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)

{
  "incidentId": "06e8535a-e80e-4417-bfdc-2d91b31af068",
  "incidentNumber": "24007628",
  "incidentDate": "2024-01-10T08:10:54",
  "incidentTime": "05:30",
  "amPm": null,
  "reporterClass": "Public Notification Report",
  "eventType": "SSO – System Surcharging Under High Flow Conditions",
  "permiteeClass": "Non-CSO",
  "permiteeName": "WINCHESTER, TOWN OF",
  "permiteeId": null,
  "outfallId": null,
  "municipality": "WINCHESTER",
  "reportingType": "Initial-Ongoing",
  "location": "Other",
  "latitude": "42.44181",
  "longitude": "-71.14925",
  "waterBody": "Other",
  "waterBodyDescription": "Surface (Upper Mystic Lake) ",
  "volumnOfEvent": "",
  "rainfallData": "",
  "hours": "",
  "minutes": "",
  "month": null,
  "year": null,
  "additionalInformation": null,
  "submittedDate": "2024-01-11T08:22:16.62",
  "parentIncidentId": null,
  "_report_class": "Public Notification Report",
  "_tz_assumed": "America/New_York (portal gives local clock time without zone)",
  "_water": {
    "no_slug": [
      "Other (read waterBodyDescription (free text))"
    ]
  },
  "_advice_source": "required wording of 314 CMR 16.04(10)(g); the permittee's own advisory is only in an attachment the portal will not serve"
}

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