Treatment bypass reported — Riverhead (T) SD WWTF, Jul 8, 2026

Ended (as reported) · Riverhead (T) SD WWTF (NY DEC Sewage Pollution Right to Know)

Source: Riverhead (T) SD WWTF (NY DEC Sewage Pollution Right to Know), record 2600758927507685, reported Jul 8, 2026, 11:01 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.

Read the original notice · Report an error

1. Reported wastewater outlet

Operator named in the record: Riverhead (T) SD WWTF (federal wastewater discharge permit, NPDES, NY0020061). Outlet: “Bioreactors at treatment plant”. Location: 40.92350, -72.64460; 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: “Sawmill Creek”. 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.

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.

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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: Jul 8, 2026, 7:00 AM EDT
Ended: Jul 8, 2026, 7:30 AM EDT
Detail provided by the source: Times known to the minute
Reported to the source: Jul 8, 2026, 11:01 AM EDT
Published: Jul 8, 2026, 11:01 AM EDT
Source last updated: not given
Last retrieved by DirtyWaterWatch: 2026-11-02 20:40 UTC

What and how much

Type: Treatment bypass: wastewater skips one or more treatment steps.
Status in the record: Ended (as reported)
Material: “Partially Treated without Disinfection”
Volume: 20,000 gallons (estimated)
Volume as reported: “20000 Gallons Estimated”

Advice from Riverhead (T) SD WWTF (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: 2600758927507685
Original notice: Read the original notice
Earlier version: None: this is the first record
Later versions: None

Record details

Record details
Record identifier	ny-dec-sprtk:2600758927507685
Source identifier	ny-dec-sprtk
Source record number	2600758927507685
Earlier version	Not provided
Type	Treatment bypass
Status in the report	Ended (as reported)
Sewer operator identifier	ny-riverhead-t-sd-wwtf
Sewer operator	Riverhead (T) SD WWTF
Federal wastewater discharge permit (NPDES)	NY0020061
Outlet number	Not provided
Outlet name	Bioreactors at treatment plant
Water named in the report	Sawmill Creek
Linked waters	Not provided
How this report was linked to the water	not linked to a mapped water
Latitude	40.924
Longitude	-72.645
Location source	given in the source record
Location accuracy, in metres	Not provided
Started	Jul 8, 2026, 7:00 AM EDT (2026-07-08T07:00:00-04:00)
Ended	Jul 8, 2026, 7:30 AM EDT (2026-07-08T07:30:00-04:00)
Detail provided by the source	to the minute
Reported to the source	Jul 8, 2026, 11:01 AM EDT (2026-07-08T11:01:00-04:00)
Published	Jul 8, 2026, 11:01 AM EDT (2026-07-08T11:01:00-04:00)
Source last updated	Not provided
Last retrieved by DirtyWaterWatch	Nov 2, 2026, 3:40 PM EST (2026-11-02T20:40:35Z)
Material	Partially Treated without Disinfection
Volume, in gallons	20,000
Volume as reported	20000 Gallons Estimated
How volume was determined	estimated
Authority	Riverhead (T) SD WWTF (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": "2600758927507685",
    "sprtkAirDateTime": "07/08/2026 15:01:00",
    "notificationStatus": "New",
    "facilityName": "Riverhead (T) SD WWTF NY0020061",
    "facilityId": "NY0020061",
    "countyName": "Suffolk",
    "streetNumber": "2",
    "streetName": "River Avenue",
    "city": "Riverhead",
    "addressDescription": "Sewage Treatment Plant",
    "latitude": "-72.6446",
    "longitude": "40.9235",
    "sprtkStartDischargeDatetime": "07/08/2026 11:00:00",
    "sprtkEndDischargeDatetime": "07/08/2026 11:30:00",
    "dischargeDuration": "30 Minutes - Ended",
    "surfaceWater": "No",
    "receivingWaterBody": "Sawmill Creek",
    "componentDescription": "Bioreactors at treatment plant",
    "quantity": "20000 Gallons Estimated",
    "treatedState": "Partially Treated without Disinfection",
    "dischargeDescription": "Wastewater overflow since permeate cycle did not initiate",
    "stepsToContain": "Portion of flow went into drywells. Liquid in drywells has been pumped out and delivered to on-site scavenger waste treatment plant. Free liquid was also pumped and delivered to on-site scavenger waste treatment plant.",
    "geoaddress": "2 River Ave, Riverhead, NY 11901, USA",
    "impactedArea": "Other - Treatment plant site and adjoining woodlands",
    "dischargeReason": "Power Outage - Power surge impacted control system which led to overflow of process tank",
    "systemComponent": "Other - Bioreactors at treatment plant",
    "region": "1",
    "sprtkDischargeWaterFlow": "Overland Flow",
    "sprtkImpactAreaDesc": "Treatment plant site and adjoining woodlands",
    "sprtkExplanation": "Power surge impacted control system which led to overflow of process tank"
  },
  "_tab": "January 2026-August2026",
  "_row": 4233,
  "_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": "partially treated discharge (treated state)",
  "_water": {
    "why_none": "the notifier says the discharge does not reach surface water"
  },
  "_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:NY0020061|2 river avenue riverhead|2026-07-08T11:00Z",
    "basis": "facility + address + start",
    "position": 1,
    "of": 1,
    "head": "ny-dec-sprtk:2600758927507685",
    "latest": "ny-dec-sprtk:2600758927507685",
    "notices": [
      {
        "id": "2600758927507685",
        "status": "New",
        "aired": "2026-07-08T11:01:00-04:00"
      }
    ]
  }
}

Source: Riverhead (T) SD WWTF (NY DEC Sewage Pollution Right to Know), record 2600758927507685, reported Jul 8, 2026, 11:01 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.