Combined sewer overflow (CSO) reported — Massena (V) WWTP, Mar 11, 2026

Ongoing (as reported) · Massena (V) WWTP (NY DEC Sewage Pollution Right to Know)

Source: Massena (V) WWTP (NY DEC Sewage Pollution Right to Know), record 2402468877076699, reported Mar 12, 2026, 7:41 AM EDT, retrieved 2026-11-02 20:40 UTC · Read the original notice

Current status from this report

Earlier version. A later record from the same source replaces this one. The newest version sets the map status. read the newer version

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

Read the original notice · Report an error

1. Reported wastewater outlet

Operator named in the record: Massena (V) WWTP (federal wastewater discharge permit, NPDES, NY0031194). Outlet: “Massena WWTP”. Location: 44.93570, -74.87460; 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: “Grasse River”. DirtyWaterWatch links this report to Grasse 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: Mar 11, 2026, 7:30 PM EDT
Ended: ongoing, as last reported
Detail provided by the source: Times known to the minute
Reported to the source: Mar 12, 2026, 7:41 AM EDT
Published: Mar 12, 2026, 7:41 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: Ongoing (as reported)
Material: “Untreated”
Volume: “Ongoing Gallons Actual” (estimated)
Volume as reported: “Ongoing Gallons Actual”

Advice from Massena (V) 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: 2402468877076699
Original notice: Read the original notice
Earlier version: None: this is the first record
Later versions: version 2

Record details

Record details
Record identifier	ny-dec-sprtk:2402468877076699
Source identifier	ny-dec-sprtk
Source record number	2402468877076699
Earlier version	Not provided
Type	Combined sewer overflow (CSO)
Status in the report	Ongoing (as reported)
Sewer operator identifier	ny-massena
Sewer operator	Massena (V) WWTP
Federal wastewater discharge permit (NPDES)	NY0031194
Outlet number	Not provided
Outlet name	Massena WWTP
Water named in the report	Grasse River
Linked waters	grasse-river-ny
How this report was linked to the water	the water named in the report
Latitude	44.936
Longitude	-74.875
Location source	given in the source record
Location accuracy, in metres	Not provided
Started	Mar 11, 2026, 7:30 PM EDT (2026-03-11T19:30:00-04:00)
Ended	Not provided
Detail provided by the source	to the minute
Reported to the source	Mar 12, 2026, 7:41 AM EDT (2026-03-12T07:41:07-04:00)
Published	Mar 12, 2026, 7:41 AM EDT (2026-03-12T07:41:07-04:00)
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	Not provided
Volume as reported	Ongoing Gallons Actual
How volume was determined	estimated
Authority	Massena (V) 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": "2402468877076699",
    "sprtkAirDateTime": "03/12/2026 11:41:07",
    "notificationStatus": "New",
    "facilityName": "Massena (V) WWTP NY0031194",
    "facilityId": "NY0031194",
    "countyName": "St. Lawrence",
    "streetNumber": "302",
    "streetName": "E Orvis St.",
    "city": "Massena",
    "addressDescription": "Massena WWTP",
    "latitude": "-74.8746",
    "longitude": "44.9357",
    "sprtkStartDischargeDatetime": "03/11/2026 23:30:00",
    "sprtkEndDischargeDatetime": "03/12/2026 11:39:47",
    "dischargeDuration": "Ongoing Hours - Ongoing",
    "surfaceWater": "Yes",
    "receivingWaterBody": "Grasse River",
    "quantity": "Ongoing Gallons Actual",
    "treatedState": "Untreated",
    "dischargeDescription": "Emerg. Bypass from Massena WWTP",
    "stepsToContain": "Monitor.",
    "geoaddress": "302 E Orvis St, Massena, NY 13662, USA",
    "impactedArea": "Unknown -",
    "dischargeReason": "Weather Conditions - Wet Weather Conditions",
    "systemComponent": "-",
    "sprtkDischargeWaterFlow": "Manmade",
    "sprtkExplanation": "Wet Weather Conditions"
  },
  "_tab": "January 2026-August2026",
  "_row": 1053,
  "_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"
  },
  "_projected_end": "2026-03-12T07:39:47-04:00",
  "_projected_end_note": "NY-Alert requires an expected end time on every notice; this one is a projection, not a reported end",
  "_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)"
  },
  "_volume_note": "first (New) notice: NY-Alert requires a volume and an end time up front, so this figure is the notifier's estimate or placeholder, not a measured total",
  "_chain": {
    "id": "key:NY0031194|302 e orvis st massena|2026-03-11T23:30Z",
    "basis": "facility + address + start",
    "position": 1,
    "of": 2,
    "head": "ny-dec-sprtk:2402468877076699",
    "latest": "ny-dec-sprtk:2417140485348557"
  }
}

Source: Massena (V) WWTP (NY DEC Sewage Pollution Right to Know), record 2402468877076699, reported Mar 12, 2026, 7:41 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.