Sanitary sewer overflow: Woonsocket Sanitary Sewer System, Sep 28, 2026

Ended (as reported) · EPA ECHO Sewer Overflow and Bypass Event report (reported to regulators)

Source: EPA ECHO Sewer Overflow and Bypass Event report (reported to regulators) via ECHO NPDES Sewer Overflow and Bypass Event Dataset (eRule Phase 2, current versions), record RISS00025:7:1, reported Sep 28, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice

Colours no water as of Nov 2, 2026, 6:56 AM EST: the windows on the methods page have passed, or the record has no time to count from.

A report is not a test of the water. See how statuses are worked out.

1. The reported outfall

Outfall reported by Woonsocket Sanitary Sewer System (RISS00025). Location: 41.99444, -71.52708, given in the source record.

2. Waters named in the notice

The notice names: “Cherry Brook”. Not placed on a tracked water.

3. Modeled downstream reach

Not modeled: the reach model runs on rivers above the head of tide only.

Source: water outlines from OpenBoatLaunch and OpenStreetMap contributors (ODbL); outfalls from EPA ECHO and the state outfall layers; modeled reaches computed by DirtyWaterWatch from USGS NLDI, NHDPlus and the nearest USGS gauge (Jobson 1996); basemap OpenFreeMap and OpenMapTiles.

Open on the main map

When: three different times

The time of the event, the time the source reported, published or updated it, and the time we fetched it are kept apart. Times are shown in New England time; the record keeps the original offsets.

Started: Sep 28, 2026, 7:00 PM EDT
Ended: Sep 28, 2026, 11:30 PM EDT
Precision: Known to the minute
Reported to the source: Sep 28, 2026, 8:00 PM EDT
Published: Oct 29, 2026, 8:00 PM EDT
Source last updated: Oct 30, 2026, 7:11 AM EDT
We fetched it: 2026-11-02 11:54 UTC

What and how much

Type: Sanitary sewer overflow
Status in the record: Ended (as reported)
Material: “untreated sewage”
Volume: 270 gal (estimated)
Volume in the source's words: “270 gallons (Best Professional Judgement)”

Advice

The record carries no advice text from EPA ECHO Sewer Overflow and Bypass Event report (reported to regulators).

Advice window: not stated in the record; the state's window on the methods page applies
Basis: not stated

Source and revisions

Source: ECHO NPDES Sewer Overflow and Bypass Event Dataset (eRule Phase 2, current versions)
Record id at the source: RISS00025:7:1
Original notice: https://echo.epa.gov/detailed-facility-report?fid=RISS00025&sys=ICP
Revision of: none (first record)
Revised by: no later revision

Every field of the record

All fields of event echo-sewer-overflow:RISS00025:7:1
`event_id`	echo-sewer-overflow:RISS00025:7:1
`source_id`	echo-sewer-overflow
`source_record_id`	RISS00025:7:1
`parent_event_id`	null
`event_type`	sso
`status`	ended
`discharger_id`	null
`discharger_name`	Woonsocket Sanitary Sewer System
`npdes_permit`	RISS00025
`outfall_id`	null
`outfall_name`	null
`waterbody_text`	Cherry Brook
`water_slugs`	[]
`water_match`	none
`lat`	41.994439
`lon`	-71.527078
`coord_source`	source
`coord_precision_m`	null
`started_at`	2026-09-28T19:00:00
`ended_at`	2026-09-28T23:30:00
`time_precision`	minute
`reported_at`	2026-09-29
`published_at`	2026-10-30
`source_updated_at`	2026-10-30T11:11:23Z
`fetched_at`	2026-11-02T11:54:48Z
`material`	untreated sewage
`volume_gal`	270
`volume_text`	270 gallons (Best Professional Judgement)
`estimate_flag`	estimated
`authority`	EPA ECHO Sewer Overflow and Bypass Event report (reported to regulators)
`advice_text`	null
`advice_window_hours`	null
`advice_window_basis`	null
`source_url`	https://echo.epa.gov/detailed-facility-report?fid=RISS00025&sys=ICP
`parse_error`	null
`fixture`	false
`file`	events/echo-sewer-overflow~3ARISS00025~3A7~3A1.json
`duplicate_of`	null
`placement_note`	null
`unplaced_reason`	null
`set_aside`	null
`superseded`	null
`reach`	null
`reach_band`	null

The source's record (raw)

{
  "sewer_overflow_bypass_event_key": "27562",
  "permit_identifier": "RISS00025",
  "program_report_form_set_id": "7",
  "program_report_form_id": "1",
  "sewer_overflow_bypass_event_id_ext": "1",
  "program_report_received_date": "2026-09-29",
  "program_report_start_date": "2026-09-28",
  "program_report_end_date": "2026-09-28",
  "electronic_submission_type_code": "ES1",
  "electr_submission_type_desc": "EPA electronic reporting system",
  "program_report_npdes_data_group_number_code": "G9A",
  "program_report_npdes_data_group_desc": "Sewer Overflow/Bypass Event Report ",
  "payload_id": "321049273",
  "transaction_type": "N",
  "sewer_overflow_bypass_description_text": "Broken sewer main resulting in a sewer bypass discharge to Cherry Brook",
  "sewer_overflow_bypass_reporting_requirement_code": "1",
  "sewer_overflow_reporting_requirement_desc": "5-day reporting for noncompliance that may endanger health or the environment",
  "wet_weather_occurance_indicator": "N",
  "sewer_overflow_structure_type_code": "BRO",
  "sewer_overflow_structure_type_desc": "Broken Pipe",
  "collection_system_identifier": "001",
  "latitude_measure": "41.994439",
  "longitude_measure": "-71.527078",
  "sewer_overflow_bypass_duration_hours": "4.50",
  "sewer_overflow_bypass_start_datetime": "2026-09-28 19:00:00",
  "sewer_overflow_bypass_end_datetime": "2026-09-28 23:30:00",
  "discharge_quantification_method_code": "BPJ",
  "discharge_quantification_method_desc": "Best Professional Judgement",
  "sewer_overflow_bypass_discharge_volume_gallons": "270.00",
  "event_transaction_type": "N",
  "collection_system_owner_type_code": "CTG",
  "collection_system_owner_type_desc": "Municipality",
  "collection_system_population": "53000",
  "types": [
    "Sanitary Sewer Overflow Event"
  ],
  "receiving_waters": [
    "Cherry Brook"
  ],
  "impacts": [
    {
      "code": "AHI",
      "desc": "Aquatic habitat impairment",
      "other": null
    }
  ],
  "causes": [
    {
      "code": "BPO",
      "desc": "Broken Pipe - Other",
      "other": null
    }
  ],
  "corrective_actions": [
    {
      "code": "FBP",
      "desc": "Fix Broken Pipe",
      "other": null
    }
  ],
  "treatment": [],
  "collection_system_name": "Woonsocket Sanitary Sewer System",
  "percent_collection_system_css": "0",
  "reached_water_rule": "receiving water named",
  "timezone_note": "ECHO gives event times without a timezone; recorded as given (presumably local time)",
  "report_version": "1"
}

Personal fields (names, emails, phone numbers of staff) are removed from raw records before they are stored.