Maryland / Reports /

Sanitary sewer overflow (SSO) reported — City of Rockville, Jun 12, 2026

Ended (as reported) · City of Rockville

Source: City of Rockville via MDE Reported Sewer Overflows (New for 2023), Maryland Open Data Portal (Socrata stgj-u72u), record mdc421199-20260612T0930-515-dover-rd, updated by the source Nov 2, 2026, 10:55 AM EST, retrieved 2026-11-03 02:31 UTC · Read the original notice

Read the original notice · Report an error

1. Reported wastewater outlet

Operator named in the record: City of Rockville. Outlet: “515 Dover Road”. Location: not given in the report or in the outlet records.

Outfall: a pipe or outlet where wastewater enters a water body.

2. Waters named in the notice

The notice names: “Parking Lot and into storm drain, drains into a tributary of Rock 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.

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

Jun 12, 2026, 9:30 AM EDT

Ended

Jun 12, 2026, 11:00 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

100 gallons (not stated whether estimated or measured)

Volume as reported

“100 gallons”

Advice from City of Rockville

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

mdc421199-20260612T0930-515-dover-rd

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 - Rockville",
    "npdes_no": "MDC421199",
    "start_date": "06/12/2026",
    "start_time": "09:30:00",
    "duration_day": "0",
    "duration_hour": "1",
    "duration_minute": "30",
    "overflow_address": "515 Dover Road",
    "zip": "20850",
    "owner_name": "City of Rockville",
    "discharge_volume": "100",
    "overflow_cause": "Wastewater pump station, pumps stopped, backup failed and they had to manually restart pumps.",
    "receiving_water": "Parking Lot and into storm drain, drains into a tributary of Rock Creek",
    "county": "Montgomery",
    "penalty_id": "",
    "overflow_latitude": "",
    "overflow_longitude": "",
    "id": "309"
  },
  "_ended_at_basis": "start + duration_day/hour/minute",
  "_coords": "no coordinates",
  "_water": {
    "why_none": "no Maryland water record matched the name"
  },
  "_discharger_basis": "permit/system id MDC421199",
  "_first_seen_at": "2026-11-03T02:28:49Z"
}