Maryland / Reports /

Sanitary sewer overflow (SSO) reported — WSSC, Aug 12, 2026

Ended (as reported) · WSSC

Source: WSSC via MDE Reported Sewer Overflows (New for 2023), Maryland Open Data Portal (Socrata stgj-u72u), record mdc121199-20260812T2159-10651-martin-luther-king-jr-hwy, updated by the source Nov 2, 2026, 10:55 AM EST, retrieved 2026-11-03 02:31 UTC · Read the original notice

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1. Reported wastewater outlet

Operator named in the record: WSSC. Outlet: “10651 Martin Luther King Jr Hwy”. Location: 38.95570, -76.82410; 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: “Western Branch”. 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.

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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

Aug 12, 2026, 9:59 PM EDT

Ended

Aug 13, 2026, 6:00 AM EDT

Detail provided by the source

Times known to the minute

Reported to the source

not given

Published

not given

Source last updated

Nov 2, 2026, 10:55 AM EST

Last retrieved by DirtyWaterWatch

2026-11-03 02:31 UTC

What and how much

Type

Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater.

Status in the record

Ended (as reported)

Material

not stated

Volume

421 gallons (not stated whether estimated or measured)

Volume as reported

“421 gallons”

Advice from WSSC

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

MDE Reported Sewer Overflows (New for 2023), Maryland Open Data Portal (Socrata stgj-u72u)

Source record number

mdc121199-20260812T2159-10651-martin-luther-king-jr-hwy

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "row": {
    "overflow_type": "SSO",
    "facility_collection_system": "Blue Plains WWTP Collection System - WSSC (PG. Co.)",
    "npdes_no": "MDC121199",
    "start_date": "08/12/2026",
    "start_time": "21:59:00",
    "duration_day": "0",
    "duration_hour": "8",
    "duration_minute": "1",
    "overflow_address": "10651 Martin Luther King Jr Hwy",
    "zip": "20720",
    "owner_name": "WSSC",
    "discharge_volume": "421",
    "overflow_cause": "Blockage - Grease and wipes.",
    "receiving_water": "Western Branch",
    "county": "Prince George's",
    "penalty_id": "",
    "overflow_latitude": "38.9557",
    "overflow_longitude": "-76.8241",
    "id": "158"
  },
  "_ended_at_basis": "start + duration_day/hour/minute",
  "_coords": "as given",
  "_water": {
    "name_notes": [
      "'Western Branch' in Prince George's County read as the Western Branch Patuxent River (WSSC's Western Branch sewershed)",
      "'western branch patuxent river': the point is not near any of the 1 Maryland waters with this name: not used"
    ],
    "why_none": "no Maryland water record matched the name"
  },
  "_discharger_basis": "permit/system id MDC121199",
  "_first_seen_at": "2026-11-03T02:28:49Z"
}