Connecticut / Reports /

Combined sewer overflow (CSO) reported — Norwich Public Utilities, Jul 21, 2026

Ended (as reported) · Norwich Public Utilities (CT DEEP Performance Dashboard)

Source: Norwich Public Utilities (CT DEEP Performance Dashboard) via CT DEEP CSO/SSO Performance Dashboard (QScend), record 11022, the source gives no report time, retrieved 2026-11-02 11:20 UTC · Read the original notice

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1. Reported wastewater outlet

Operator named in the record: Norwich Public Utilities (federal wastewater discharge permit, NPDES, CT0100412). 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 no water. 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 21, 2026, 2:45 PM EDT

Ended

Jul 21, 2026, 3:45 PM EDT

Detail provided by the source

Times known to the minute

Reported to the source

not given

Published

not given

Source last updated

not given

Last retrieved by DirtyWaterWatch

2026-11-02 11:20 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

not stated

Volume

428 gallons (measured or verified)

Volume as reported

“428”

Advice from Norwich Public Utilities (CT DEEP Performance Dashboard)

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

CT DEEP CSO/SSO Performance Dashboard (QScend)

Source record number

11022

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "Report Type": "CSO - Norwich 5 Day Report",
  "Muncipality": "Norwich",
  "Status": "Closed",
  "Date Activated": "07/21/2026",
  "Event Start Time": "02:45 PM",
  "CSO Group Name": null,
  "Request ID": "11022",
  "Receiving Waterbody": null,
  "CSO Estimated Volume": "428",
  "How was estimated quantity or rate determined": "Flow meter",
  "Date Ceased": "07/21/2026",
  "Event End Time": "03:45 PM",
  "Total Rainfall": "1.1",
  "Final Volume": "428",
  "Describe how final volume was determined": "Flow Meter",
  "_view": "CSO DATA VIEW",
  "_dww_note": [
    "CSO Group Name and Receiving Waterbody are blank in the source (DEEP dashboard, 2026 rows for MDC, Norwich, Bridgeport West and GNH): no water assigned; the utility's usual waters are not inferred"
  ]
}