Combined sewer overflow (CSO) reported — Amsterdam (C) WWTP, Jul 28, 2026

Ended (as reported) · Amsterdam (C) WWTP (NY DEC Sewage Pollution Right to Know)

Source: Amsterdam (C) WWTP (NY DEC Sewage Pollution Right to Know), record 2657658653910825, reported Jul 31, 2026, 11:02 AM EDT, retrieved 2026-11-02 20:40 UTC · Read the original notice

Current status from this report

This report does not set a map status as of Nov 2, 2026, 4:26 PM EST. Check its dates and the status rules.

A report is not a test of the water. See how we assign statuses.

Latest conditions, not at the time of this report:At the Mohawk River near Little Falls NY gauge, 7.4 kilometres from the nearest boat launch on Mohawk River: flow 736 cubic feet per second (Nov 2, 2026, 3:30 PM EST). Conditions are measured at the gauge, not at this spot, and do not change the status.Conditions on Mohawk River

Source: U.S. Geological Survey via Water Data for the Nation, gauge 01347000, reading Nov 2, 2026, 3:30 PM EST, retrieved 2026-11-02 21:22 UTC. Gauge chosen by DirtyWaterWatch. · Readings and history at USGS

Read the original notice · Report an error

1. Reported wastewater outlet

Operator named in the record: Amsterdam (C) WWTP (federal wastewater discharge permit, NPDES, NY0020290). Outlet: not stated. Location: 42.93020, -74.18330; location source: given in the source record.

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

2. Waters named in the notice

The notice names: “Mohawk river”. DirtyWaterWatch links this report to Mohawk River, NY. Match basis: the water named in the report.

3. Estimated downstream stretch

No downstream estimate is available for this report.

Map sources: water outlines and launches from OpenBoatLaunch and OpenStreetMap contributors (Open Database License); wastewater outlets from EPA and state records; downstream estimates by DirtyWaterWatch using U.S. Geological Survey maps and flow data. Base map: OpenFreeMap and OpenMapTiles.

Open on the main map

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 28, 2026, 3:30 PM EDT
Ended: Jul 30, 2026, 11:25 AM EDT
Detail provided by the source: Times known to the minute
Reported to the source: Jul 31, 2026, 11:02 AM EDT
Published: Jul 31, 2026, 11:02 AM EDT
Source last updated: not given
Last retrieved by DirtyWaterWatch: 2026-11-02 20:40 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: “Untreated”
Volume: 9.21 million gallons (estimated)
Volume as reported: “9,209,634 Gallons Estimated”

Advice from Amsterdam (C) WWTP (NY DEC Sewage Pollution Right to Know)

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: NY DEC Sewage Pollution Right to Know
Source record number: 2657658653910825
Original notice: Read the original notice
Earlier version: Read the earlier version
Later versions: None

Record details

Record details
Record identifier	ny-dec-sprtk:2657658653910825
Source identifier	ny-dec-sprtk
Source record number	2657658653910825
Earlier version	ny-dec-sprtk:2637867444601391
Type	Combined sewer overflow (CSO)
Status in the report	Ended (as reported)
Sewer operator identifier	ny-amsterdam
Sewer operator	Amsterdam (C) WWTP
Federal wastewater discharge permit (NPDES)	NY0020290
Outlet number	Not provided
Outlet name	Not provided
Water named in the report	Mohawk river
Linked waters	mohawk-river-ny
How this report was linked to the water	the water named in the report
Latitude	42.93
Longitude	-74.183
Location source	given in the source record
Location accuracy, in metres	Not provided
Started	Jul 28, 2026, 3:30 PM EDT (2026-07-28T15:30:00-04:00)
Ended	Jul 30, 2026, 11:25 AM EDT (2026-07-30T11:25:00-04:00)
Detail provided by the source	to the minute
Reported to the source	Jul 31, 2026, 11:02 AM EDT (2026-07-31T11:02:28-04:00)
Published	Jul 31, 2026, 11:02 AM EDT (2026-07-31T11:02:28-04:00)
Source last updated	Not provided
Last retrieved by DirtyWaterWatch	Nov 2, 2026, 3:40 PM EST (2026-11-02T20:40:35Z)
Material	Untreated
Volume, in gallons	9,209,634
Volume as reported	9,209,634 Gallons Estimated
How volume was determined	estimated
Authority	Amsterdam (C) WWTP (NY DEC Sewage Pollution Right to Know)
Advice	Not provided
Advice period, in hours	Not provided
Basis of the advice period	Not provided
Original notice	https://www.dec.ny.gov/fs/data/SPRTK_Data.xlsx

Original source data

{
  "row": {
    "notificationId": "2657658653910825",
    "sprtkAirDateTime": "07/31/2026 15:02:28",
    "notificationStatus": "Update",
    "facilityName": "Amsterdam (C) WWTP",
    "facilityId": "NY0020290",
    "countyName": "Montgomery",
    "streetNumber": "46",
    "streetName": "Swan",
    "city": "Amsterdam",
    "latitude": "-74.1833",
    "longitude": "42.9302",
    "sprtkStartDischargeDatetime": "07/28/2026 19:30:00",
    "sprtkEndDischargeDatetime": "07/30/2026 15:25:00",
    "dischargeDuration": "2575 Minutes - Ended",
    "surfaceWater": "Yes",
    "receivingWaterBody": "Mohawk river",
    "quantity": "9,209,634 Gallons Estimated",
    "treatedState": "Untreated",
    "stepsToContain": "All pumps are in working order, stop two pumps to reduce flow at the plant",
    "geoaddress": "46 Swan St, Amsterdam, NY 12010, USA",
    "impactedArea": "-",
    "dischargeReason": "Weather Conditions - Very heavy rain",
    "systemComponent": "-",
    "region": "4",
    "sprtkDischargeWaterFlow": "Manmade",
    "sprtkExplanation": "Very heavy rain"
  },
  "_tab": "January 2026-August2026",
  "_row": 4692,
  "_time_basis": {
    "air": "UTC in the workbook (rows aired from late May 2025); converted to America/New_York",
    "start": "UTC in the workbook (rows aired from late May 2025); converted to America/New_York",
    "end": "UTC in the workbook (rows aired from late May 2025); converted to America/New_York"
  },
  "_coords": "latitude and longitude columns swapped; a street-address geocode chosen by the notifier",
  "_event_type_basis": "inferred: untreated wet-weather discharge from a CSO permittee, no component given (could also be a sanitary overflow or plant bypass)",
  "_water": {
    "via": "receiving water name within New York (checked against the geocode)"
  },
  "_chain": {
    "id": "key:NY0020290|46 swan amsterdam|2026-07-28T19:30Z",
    "basis": "facility + address + start",
    "position": 2,
    "of": 2,
    "head": "ny-dec-sprtk:2637867444601391",
    "latest": "ny-dec-sprtk:2657658653910825",
    "notices": [
      {
        "id": "2637867444601391",
        "status": "New",
        "aired": "2026-07-28T16:32:52-04:00"
      },
      {
        "id": "2657658653910825",
        "status": "Update",
        "aired": "2026-07-31T11:02:28-04:00"
      }
    ]
  }
}

Source: Amsterdam (C) WWTP (NY DEC Sewage Pollution Right to Know), record 2657658653910825, reported Jul 31, 2026, 11:02 AM EDT, retrieved 2026-11-02 20:40 UTC · Read the original notice

Staff names, email addresses and phone numbers are removed from source data before it is stored.