Massachusetts / Events /

Blended (partially treated) discharge: LOWELL REGIONAL WASTEWATER UTILITY, Aug 3, 2026

Ended (as reported) · LOWELL REGIONAL WASTEWATER UTILITY (MassDEP sewage notification portal)

Source: LOWELL REGIONAL WASTEWATER UTILITY (MassDEP sewage notification portal) via MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/), record 27936c02-0c28-4a85-b056-836703422e9c, published Aug 3, 2026, 8:05 PM EDT, retrieved 2026-11-02 10:58 UTC · notice

1. The reported outfall

Outfall reported by LOWELL REGIONAL WASTEWATER UTILITY (MA0100633 outfall 035). Location: 42.64845, -71.28747, given in the source record.

2. Waters named in the notice

The notice names: “MERRIMACK RIVER”. We place it on Merrimack River, MA. Matched by the name of the water in the source record.

3. Modeled downstream reach

No modeled reach for this record in this build.

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

Aug 3, 2026, 9:20 AM EDT

Ended

Aug 3, 2026, 7:54 PM EDT

Precision

Known to the minute

Reported to the source

not given

Published

Aug 3, 2026, 8:05 PM EDT

Source last updated

not given

We fetched it

2026-11-02 10:58 UTC

What and how much

Type

Blended (partially treated) discharge

Status in the record

Ended (as reported)

Material

“Partially Treated – Blended”

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.”

Advice window

48 hours

Basis

314 CMR 16.04(10)(g)

What it does to the map, over time

• Advisory in effect Merrimack River: Within the authority's advice window after the discharge ended, Aug 3, 2026, 7:54 PM EDT to Aug 5, 2026, 7:54 PM EDT
• Caution Merrimack River: Within the site's caution window after the discharge ended (data/rules.json), Aug 5, 2026, 7:54 PM EDT to Aug 6, 2026, 7:54 PM EDT

Source: intervals computed by DirtyWaterWatch (build/status.py) from this record and the rules on the methods page, as of 2026-11-02 11:56 UTC.

Source and revisions

Source

MassDEP CSO API behind the portal (eeaonline.eea.state.ma.us/dep/CSOAPI/api/)

Record id at the source

27936c02-0c28-4a85-b056-836703422e9c

Original notice

https://eeaonline.eea.state.ma.us/portal/dep/cso-data-portal/detail…

Revision of

ma-massdep:4e4be6d0-10e7-4e15-b561-8fbb32ae01a8

Revised by

no later revision

{
  "incidentId": "27936c02-0c28-4a85-b056-836703422e9c",
  "incidentNumber": "26017006-1",
  "incidentDate": "2026-08-03T00:00:00",
  "incidentTime": "09:20",
  "amPm": null,
  "reporterClass": "Public Notification Report",
  "eventType": "Partially Treated – Blended",
  "permiteeClass": "CSO",
  "permiteeName": "LOWELL REGIONAL WASTEWATER UTILITY",
  "permiteeId": "MA0100633",
  "outfallId": "035",
  "municipality": "LOWELL",
  "reportingType": "Ceased",
  "location": "Other",
  "latitude": "42.64844804",
  "longitude": "-71.28746603",
  "waterBody": "MERRIMACK RIVER",
  "waterBodyDescription": null,
  "volumnOfEvent": "",
  "rainfallData": "",
  "hours": "",
  "minutes": "",
  "month": null,
  "year": null,
  "additionalInformation": null,
  "submittedDate": "2026-08-03T20:05:27.713",
  "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": {
    "via": "crosswalk on portal waterbody",
    "text": "MERRIMACK RIVER",
    "confidence": "high"
  },
  "_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",
  "_parent_number": "26017006",
  "_link_basis": "incidentNumber suffix",
  "_ended_at_basis": "parent notice's verified end (from Verified Data Report 26017869: its start + verified duration)"
}