Massachusetts / Reports /

Combined sewer overflow (CSO) reported — City of Holyoke (Water Pollution Control / DPW; Veolia contract operator), Jun 1, 2026

Ended (as reported) · EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures)

Source: EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures) via ECHO Effluent Charts REST services, record MA0101630:021:2026-06, reported Jul 15, 2026, 12:00 AM EDT, retrieved 2026-11-02 15:54 UTC · Read the original notice

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1. Reported wastewater outlet

Operator named in the record: City of Holyoke (Water Pollution Control / DPW; Veolia contract operator) (federal wastewater discharge permit, NPDES, MA0101630). Outlet: 021 “RIVER TERRACE”. Location: 42.22917, -72.62390; location source: from the state's or EPA's outfall layer.

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

Source: EPA ECHO wastewater outlet records, permit MA0101630, outlet 021. Location linked by DirtyWaterWatch.

2. Waters named in the notice

The notice names: “CONNECTICUT RIVER”. DirtyWaterWatch links this report to Connecticut River, MA. Match basis: the outlet's permit and number in EPA and state records.

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

June 2026

Ended

June 2026

Detail provided by the source

Times known to the month only

Reported to the source

Jul 15, 2026, 12:00 AM EDT

Published

not given

Source last updated

not given

Last retrieved by DirtyWaterWatch

2026-11-02 15:54 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

“combined sewage and stormwater”

Volume

740,896 gallons (not stated whether estimated or measured)

Volume as reported

“10 discharge event(s); 29.9 hr/mo of discharge; 740,896 gallons”

Advice from EPA ECHO Discharge Monitoring Reports (permittee-reported monthly CSO figures)

This report includes no advice. Check current local health notices.

Advice period

This report does not state a period. See the rule DirtyWaterWatch applies and its source.

Basis

not stated

Source and versions

Source

ECHO Effluent Charts REST services

Source record number

MA0101630:021:2026-06

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "month": "2026-06",
  "permit_feature": "021",
  "limit_set_schedule_id": "3601191197",
  "monitoring_location": "Effluent Gross",
  "parameters": {
    "events": {
      "ParameterCode": null,
      "_param": "Number of Events",
      "DMRValueId": "3873420101",
      "DMRValueNmbr": "10",
      "DMRUnitDesc": "#",
      "StatisticalBaseDesc": "MO TOTAL",
      "ValueTypeDesc": "Concentration1",
      "NODICode": null,
      "NODIDesc": null,
      "ValueReceivedDate": "15-JUL-26",
      "DMRDueDate": "15-JUL-26",
      "DaysLate": null,
      "VersionNmbr": "0"
    },
    "duration": {
      "ParameterCode": null,
      "_param": "Duration of discharge",
      "DMRValueId": "3873420103",
      "DMRValueNmbr": "29.9",
      "DMRUnitDesc": "hr/mo",
      "StatisticalBaseDesc": "MO TOTAL",
      "ValueTypeDesc": "Concentration1",
      "NODICode": null,
      "NODIDesc": null,
      "ValueReceivedDate": "15-JUL-26",
      "DMRDueDate": "15-JUL-26",
      "DaysLate": null,
      "VersionNmbr": "0"
    },
    "flow": {
      "ParameterCode": null,
      "_param": "Flow, total",
      "DMRValueId": "3873420102",
      "DMRValueNmbr": "740896",
      "DMRUnitDesc": "gal/mo",
      "StatisticalBaseDesc": "MO TOTAL",
      "ValueTypeDesc": "Concentration1",
      "NODICode": null,
      "NODIDesc": null,
      "ValueReceivedDate": "15-JUL-26",
      "DMRDueDate": "15-JUL-26",
      "DaysLate": null,
      "VersionNmbr": "0"
    }
  },
  "note": "monthly DMR total, not an individual event"
}