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Treatment bypass reported — Maryland Water Service Utilities, Inc., May 27, 2026

Not stated by the source · Maryland Water Service Utilities, Inc.

Source: Maryland Water Service Utilities, Inc. via MDE Reported Sewer Overflows (New for 2023), Maryland Open Data Portal (Socrata stgj-u72u), record md0022748-20260527T1030-rt-220-s-mcmullen-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: Maryland Water Service Utilities, Inc. (federal wastewater discharge permit, NPDES, MD0022748). Outlet: “Route #220 South McMullen Highway”. Location: 39.49820, -78.93490; 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: “North Branch of the Potomac River”. Not linked to a mapped water. name match too far (38.9 km)

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

May 27, 2026, 10:30 AM EDT

Ended

not reported

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

Treatment bypass: wastewater skips one or more treatment steps.

Status in the record

Not stated by the source

Material

not stated

Volume

volume not reported (not stated whether estimated or measured)

Volume as reported

none

Advice from Maryland Water Service Utilities, Inc.

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

md0022748-20260527T1030-rt-220-s-mcmullen-hwy

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "row": {
    "overflow_type": "Bypass",
    "facility_collection_system": "Pinto/MARYLAND WATER SERVICE WWTP",
    "npdes_no": "MD0022748",
    "start_date": "05/27/2026",
    "start_time": "10:30:00",
    "duration_day": "",
    "duration_hour": "",
    "duration_minute": "",
    "overflow_address": "Route #220 South McMullen Highway",
    "zip": "21556",
    "owner_name": "Maryland Water Service Utilities, Inc.",
    "discharge_volume": "",
    "overflow_cause": "Bel Air received over 5\" of rain during the last several\r\ndays.",
    "receiving_water": "North Branch of the Potomac River",
    "county": "Allegany",
    "penalty_id": "",
    "overflow_latitude": "39.4982",
    "overflow_longitude": "-78.9349",
    "id": "346"
  },
  "_coords": "as given",
  "_water": {
    "name_notes": [
      "'Potomac River' in Allegany/Garrett County read as the North Branch Potomac River (potomac-river-md begins at the confluence below Cumberland)",
      "'north branch potomac river' named as the water a tributary/branch joins: not used"
    ],
    "why_none": "no Maryland water record matched the name"
  },
  "_discharger_basis": "permit/system id MD0022748",
  "_first_seen_at": "2026-11-03T02:28:49Z"
}