DirtyWaterWatch

Massachusetts / Events /

Bypass: Massachusetts Water Resources Authority, Sep 27, 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 MA0103284:4:1, reported Sep 28, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice

Revised. A later record from the same source replaces this one. The newest revision is the one used for the map. Duplicate of ma-massdep:6ab65d5c-a34d-4d05-9e6f-dc79368c6dcb.

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

1. The reported outfall

Outfall reported by Massachusetts Water Resources Authority (MA0103284). Location: 42.35043, -70.95743, given in the source record.

2. Waters named in the notice

The notice names: “Massachusetts Bay”. We place it on Massachusetts Bay, MA. Matched by the name of the water in the source record.

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
Ended
Precision
Known to the minute
Reported to the source
Published
Source last updated
We fetched it

What and how much

Type
Bypass
Status in the record
Ended (as reported)
Material
“wastewater diverted around part of the treatment process”
Volume
90.38 million gal (measured or verified)
Volume in the source's words
“90,380,000 gallons (Automated Remote Monitoring)”

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
MA0103284:4:1
Original notice
https://echo.epa.gov/detailed-facility-report?fid=MA0103284&sys=ICP
Revision of
none (first record)
Revised by
no later revision

Every field of the record

All fields of event echo-sewer-overflow:MA0103284:4:1
event_idecho-sewer-overflow:MA0103284:4:1
source_idecho-sewer-overflow
source_record_idMA0103284:4:1
parent_event_idnull
event_typebypass
statusended
discharger_idma-mwra
discharger_nameMassachusetts Water Resources Authority
npdes_permitMA0103284
outfall_idnull
outfall_namenull
waterbody_textMassachusetts Bay
water_slugs["massachusetts-bay-ma"]
water_matchname
lat42.350425
lon-70.957432
coord_sourcesource
coord_precision_mnull
started_at2026-09-27T13:36:00
ended_at2026-09-27T23:30:00
time_precisionminute
reported_at2026-09-29
published_at2026-10-30
source_updated_at2026-10-30T11:11:23Z
fetched_at2026-11-02T11:54:48Z
materialwastewater diverted around part of the treatment process
volume_gal90380000
volume_text90,380,000 gallons (Automated Remote Monitoring)
estimate_flagmeasured
authorityEPA ECHO Sewer Overflow and Bypass Event report (reported to regulators)
advice_textnull
advice_window_hoursnull
advice_window_basisnull
source_urlhttps://echo.epa.gov/detailed-facility-report?fid=MA0103284&sys=ICP
parse_errornull
duplicate_ofma-massdep:6ab65d5c-a34d-4d05-9e6f-dc79368c6dcb
fixturefalse
fileevents/echo-sewer-overflow~3AMA0103284~3A4~3A1.json
placement_notenull
unplaced_reasonnull
set_asidenull
supersedednull
reachnull
reach_bandnull

The source's record (raw)

{
  "sewer_overflow_bypass_event_key": "27566",
  "permit_identifier": "MA0103284",
  "program_report_form_set_id": "4",
  "program_report_form_id": "1",
  "sewer_overflow_bypass_event_id_ext": "1",
  "program_report_received_date": "2026-09-29",
  "program_report_start_date": "2026-09-27",
  "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": "321058445",
  "transaction_type": "N",
  "sewer_overflow_bypass_description_text": "Wet Weather Blending Event",
  "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": "Y",
  "latitude_measure": "42.350425",
  "longitude_measure": "-70.957432",
  "sewer_overflow_bypass_duration_hours": "9.90",
  "sewer_overflow_bypass_start_datetime": "2026-09-27 13:36:00",
  "sewer_overflow_bypass_end_datetime": "2026-09-27 23:30:00",
  "discharge_quantification_method_code": "ARM",
  "discharge_quantification_method_desc": "Automated Remote Monitoring",
  "sewer_overflow_bypass_discharge_volume_gallons": "90380000.00",
  "event_transaction_type": "N",
  "types": [
    "Bypass Event"
  ],
  "receiving_waters": [
    "Massachusetts Bay"
  ],
  "impacts": [
    {
      "code": "NOI",
      "desc": "No observable impacts",
      "other": null
    }
  ],
  "causes": [
    {
      "code": "OTN",
      "desc": "Other Cause at Treatment Plant - Not Elsewhere Specified",
      "other": "Please see Additional Information"
    }
  ],
  "corrective_actions": [
    {
      "code": "PNA",
      "desc": "Provide News Alert or Notice to Local Authorities or Public",
      "other": null
    }
  ],
  "treatment": [
    {
      "code": null,
      "desc": null,
      "bypassed_equipment": "Secondary treatment equipment"
    }
  ],
  "collection_system_name": null,
  "percent_collection_system_css": null,
  "reached_water_rule": "receiving water named",
  "timezone_note": "ECHO gives event times without a timezone; recorded as given (presumably local time)",
  "report_version": "1"
}

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 MA0103284:4:1, reported Sep 28, 2026, 8:00 PM EDT, retrieved 2026-11-02 11:54 UTC · notice

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