Massachusetts / Reports /

Sanitary sewer overflow (SSO) reported — DEDHAM, TOWN OF, Jul 23, 2026

Ended (as reported) · DEDHAM, TOWN OF (MassDEP sewage notification portal)

Source: DEDHAM, TOWN OF (MassDEP sewage notification portal) via MassDEP CSO API behind the portal, record 1d0c3d4c-a99c-43db-a6af-0da0956f6fe3, published Sep 3, 2026, 10:20 AM EDT, retrieved 2026-11-02 10:58 UTC · Read the original notice

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1. Reported wastewater outlet

Operator named in the record: DEDHAM, TOWN OF. Outlet: not stated. Location: not given in the report or in the outlet records.

Outfall: a pipe or outlet where wastewater enters a water body.

2. Waters named in the notice

The notice names: “Not applicable”. Not linked to a mapped water.

3. Estimated downstream stretch

We estimate routes only on rivers before they become tidal. We do not estimate routes through tidal water or lakes.

When it happened and when it was reported

Event and notice times use Eastern Time (EST or EDT). Retrieval times use Coordinated Universal Time (UTC).

Started

Jul 23, 2026, 10:30 PM EDT

Ended

not reported

Detail provided by the source

Times known to the minute

Reported to the source

not given

Published

Sep 3, 2026, 10:20 AM EDT

Source last updated

not given

Last retrieved by DirtyWaterWatch

2026-11-02 10:58 UTC

What and how much

Type

Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater.

Status in the record

Ended (as reported)

Material

“SSO – System Surcharging Under High Flow Conditions”

Volume

volume not reported (not stated whether estimated or measured)

Volume as reported

none

Advice from DEDHAM, TOWN OF (MassDEP sewage notification portal)

“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 period

48 hours

Basis

314 CMR 16.04(10)(g)

Source and versions

Source

MassDEP CSO API behind the portal

Source record number

1d0c3d4c-a99c-43db-a6af-0da0956f6fe3

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "incidentId": "1d0c3d4c-a99c-43db-a6af-0da0956f6fe3",
  "incidentNumber": "26017431",
  "incidentDate": "2026-07-23T00:00:00",
  "incidentTime": "22:30",
  "amPm": null,
  "reporterClass": "Public Notification Report",
  "eventType": "SSO – System Surcharging Under High Flow Conditions",
  "permiteeClass": "Non-CSO",
  "permiteeName": "DEDHAM, TOWN OF",
  "permiteeId": null,
  "outfallId": null,
  "municipality": "DEDHAM",
  "reportingType": "Initial-Ceased",
  "location": "Other",
  "latitude": null,
  "longitude": null,
  "waterBody": "Other",
  "waterBodyDescription": "Not applicable",
  "volumnOfEvent": "",
  "rainfallData": "",
  "hours": "",
  "minutes": "",
  "month": null,
  "year": null,
  "additionalInformation": null,
  "submittedDate": "2026-09-03T10:20:18.947",
  "parentIncidentId": null,
  "_report_class": "Public Notification Report",
  "_tz_assumed": "America/New_York (portal gives local clock time without zone)",
  "_ended_note": "reported ceased; the portal gives no cessation time",
  "_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"
}