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Combined sewer overflow (CSO) reported — LOWELL REGIONAL WASTEWATER UTILITY, Jul 21, 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, record 90ace84b-34a3-4611-9035-5321b3702634, published Jul 22, 2026, 1:09 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: LOWELL REGIONAL WASTEWATER UTILITY (federal wastewater discharge permit, NPDES, MA0100633). Outlet: LOW027 “TILDEN STREET”. Location: 42.65092, -71.31142; location source: from the state's or EPA's outfall layer.

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

2. Waters named in the notice

The notice names: “MERRIMACK RIVER”. DirtyWaterWatch links this report to Merrimack River, MA. Match basis: the water named in the report.

3. Estimated downstream stretch

No downstream estimate is available for this report.

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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 21, 2026, 6:45 PM EDT

Ended

Jul 21, 2026, 7:37 PM EDT

Detail provided by the source

Times known to the minute

Reported to the source

not given

Published

Jul 22, 2026, 1:09 AM EDT

Source last updated

not given

Last retrieved by DirtyWaterWatch

2026-11-02 10:58 UTC

What and how much

Type

Combined sewer overflow (CSO): sewage mixed with rainwater spills from a shared sewer system.

Status in the record

Ended (as reported)

Material

“CSO – UnTreated”

Volume

volume not reported (not stated whether estimated or measured)

Volume as reported

none

Advice from LOWELL REGIONAL WASTEWATER UTILITY (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

90ace84b-34a3-4611-9035-5321b3702634

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

version 2

{
  "incidentId": "90ace84b-34a3-4611-9035-5321b3702634",
  "incidentNumber": "26016766",
  "incidentDate": "2026-07-21T00:00:00",
  "incidentTime": "18:45",
  "amPm": null,
  "reporterClass": "Public Notification Report",
  "eventType": "CSO – UnTreated",
  "permiteeClass": "CSO",
  "permiteeName": "LOWELL REGIONAL WASTEWATER UTILITY",
  "permiteeId": "MA0100633",
  "outfallId": "LOW027",
  "municipality": "LOWELL",
  "reportingType": "Initial-Ceased",
  "location": "TILDEN STREET",
  "latitude": null,
  "longitude": null,
  "waterBody": "MERRIMACK RIVER",
  "waterBodyDescription": null,
  "volumnOfEvent": "",
  "rainfallData": "",
  "hours": "",
  "minutes": "",
  "month": null,
  "year": null,
  "additionalInformation": null,
  "submittedDate": "2026-07-22T01:09:48.403",
  "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",
  "_coords": "MassDEP CSOs layer DEP_OUTFL_ LOW027 (locations are estimates)",
  "_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",
  "_ended_at_basis": "from Verified Data Report 26017294: its start + verified duration"
}