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Combined sewer overflow (CSO) reported — Macomb County Public Works Office, Sep 3, 2026

Ended (as reported) · Michigan EGLE (MiEnviro CSO/SSO List)

Source: Michigan EGLE (MiEnviro CSO/SSO List) via EGLE MiEnviro CSO/SSO List, record 8571598647773467998-3, reported Sep 3, 2026, 4:23 AM EDT, retrieved 2026-11-04 15:09 UTC · Read the original notice

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1. Reported wastewater outlet

Operator named in the record: Macomb County Public Works Office (federal wastewater discharge permit, NPDES, MI0025585). Outlet: 001 “001”. Location: 42.46383, -82.87765; location source: EPA wastewater outlet records (the report gives no location).

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

Source: EPA ECHO wastewater outlet records, permit MI0025585, outlet 001. Location linked by DirtyWaterWatch.

2. Waters named in the notice

The notice names: “Lake St. Clair”. DirtyWaterWatch links this report to Lake Saint Clair, MI. Match basis: the water named in the report.

3. Estimated downstream stretch

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

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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

Sep 3, 2026, 4:05 AM EDT

Ended

Sep 4, 2026, 12:10 AM EDT

Detail provided by the source

Times known to the minute

Reported to the source

Sep 3, 2026, 4:23 AM EDT

Published

not given

Source last updated

not given

Last retrieved by DirtyWaterWatch

2026-11-04 15:09 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

“(retention treatment basin discharge: combined sewage given partial treatment)”

Volume

35.6 million gallons (not stated whether estimated or measured)

Volume as reported

“35.6 Million Gallons”

Advice from Michigan EGLE (MiEnviro CSO/SSO List)

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

Status history from this report

• Discharge or advisory reported Lake Saint Clair: Discharge reported ongoing, Sep 3, 2026, 4:05 AM EDT to Sep 4, 2026, 12:10 AM EDT
• Caution Lake Saint Clair: Within the caution period after the reported end, Sep 4, 2026, 12:10 AM EDT to Sep 8, 2026, 12:10 AM EDT

Source: DirtyWaterWatch calculations using this report and the published status rules. Updated 2026-11-05 06:27 UTC.

Source and versions

Source

EGLE MiEnviro CSO/SSO List

Source record number

8571598647773467998-3

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "submissionId": "8571598647773467998",
  "submissionReferenceNumber": "HQR-9JDX-RD5SA",
  "sectionNumber": 3,
  "submissionReceivedDate": "2026-09-03T04:23:01.2470000-04:00",
  "responsiblePartyName": "Macomb County Public Works Office",
  "siteName": "Chapaton RTB",
  "permitNumber": "MI0025585",
  "countyDescription": "Macomb",
  "countyId": "50",
  "reportStatusId": "COMPLETE",
  "reportStatusDescription": "Completed",
  "dischargeType": "RTB Discharge,RTB Discharge",
  "dischargeQuality": "RTB,RTB",
  "dischargeVolume": "35.60000 Million Gallons",
  "dischargeVolumeNumeric": 35600000,
  "eventStartDate": "2026-09-03T04:05:00.0000000-04:00",
  "eventEndDate": "2026-09-04T00:10:00.0000000-04:00",
  "featureNumber": "001",
  "featureDescription": "001",
  "receivingWater": "Lake St. Clair",
  "landImpacted": null,
  "precipitationAmount": "2.93",
  "precipitationType": "Rain,Rain",
  "reached_water": true
}