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Maryland / Sewer operators /

Washington County Department of Water Quality

Sewer utility · Maryland · Hagerstown area, Smithsburg, Sandy Hook

Map sources: water outlines and launches from OpenBoatLaunch and OpenStreetMap contributors (Open Database License); wastewater outlets from EPA and state records; downstream estimates by DirtyWaterWatch using U.S. Geological Survey maps and flow data. Base map: OpenFreeMap and OpenMapTiles.

No outlet locations are in our records for this operator. Square boat markers mark boat launches listed by OpenBoatLaunch.

Federal wastewater discharge permit (NPDES)
MD0024317
Wastewater outlets
None with locations in our records
Waters listed as receiving wastewater
Antietam Creek; Conococheague Creek
Tracked waters
Antietam Creek, MD, Potomac River, MD, Conococheague Creek, MD, Marsh Run, MD, Grove Creek, MD
Discharge records counted
26 records · latest
Total reported volume in these records
309,165 gallons across the 26 records that give a volume

These totals reflect the records we track. Missing volumes and gaps in reporting limit comparisons between operators.

Sources: EPA ECHO and the operator and state sources linked below. Counts use the discharge records on this page. Updated 2026-11-03 08:50 UTC.

Public notices and alerts

Pages where Washington County Department of Water Quality or the state publishes its notices (check them for an alert sign-up):

Source: Washington County Department of Water Quality's public notice and alert pages and the state's notification records.

Report a missing notice or error

Wastewater outlets

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

Reports and advisories

Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater. Treatment bypass: wastewater skips one or more treatment steps.

Reports linked to Washington County Department of Water Quality, newest first
WhenReportStatus
to 5:30 PM“Doesn't know where it went because of all the rain. No waterways were impacted.” · 14014 Marsh Pike · SSO · 200 gallons report · notice · mapended
to 4:00 PM“N/A” · 14014 Marsh Pike · SSO · 40 gallons report · notice · mapended
to 11:30 PM“Storm drain. No outfall reported.” · 9436 Morning Walk Dr · SSO · 2,000 gallons report · notice · mapended
to Apr 6, 12:39 AM“No impact to receiving stream. Came up out of the floor because the filters wouldn't drain. Some went into grassy area.” · 22523 Leitersburg-Smithsburg Road · SSO · 21,000 gallons report · noticeended
to 2:50 PMConococheague Creek · 16232 Elliott Parkway · SSO · 128,000 gallons report · notice · mapended
to 2:00 PM“N/A” · 124 East High St · SSO · 1,000 gallons report · notice · mapended
to 9:45 AM“None, the spill did not enter surface water” · 22523 Lietersburg - Smithsburg Rd · SSO · 100 gallons report · noticeended
to 1:00 PMMarsh Run · 18243 Roslin Place · SSO · 1,500 gallons report · notice · mapended
to 1:30 PM“N/A” · 9529 Morning Walk Drive · SSO · 1,000 gallons report · notice · mapended
to Sep 3 ’25, 12:00 AM“None.” · 13471 Pennsylvania Ave · SSO · 1,000 gallons report · notice · mapended
to Aug 5 ’25, 12:30 PMGrove Creek · 22523 Leithersburg-Smithsburg Road · Bypass · 114,000 gallons report · notice · mapended
to 1:00 AM“Salls Creek” · 25040 Penn Mar Road · SSO · 20,000 gallons report · notice · mapended
to 9:30 PM“n/a” · 17805 Oakridge Drive · SSO · 7,000 gallons report · noticeended
to 8:52 AM“None” · 18133 Petworth Circle · SSO · 2,000 gallons report · notice · mapended
to 12:00 PM“N/A” · 4435 Harpers Ferry Road · SSO · 75 gallons report · noticeended
to 4:45 PM“stayed in the grass on property.” · 112 West Main Street · SSO · 400 gallons report · noticeended
to 5:30 PM“The discharge did not enter into the waters of the State.” · 11334 Rock Hill Road · SSO · 850 gallons report · notice · mapended
to 7:30 AM“None” · 10531 Sharpsburg Pike · SSO · 1,000 gallons report · notice · mapended
to Aug 25 ’24, 12:00 AM“N/A” · 17943 Rench Road · SSO · 2,500 gallons report · notice · mapended
to 11:45 AM“n/a” · 9403 Morning Walk Drive · SSO · 300 gallons report · noticeended
to 5:00 AMGrove Creek · 22523 Leistersburg -Smithsburg Road · SSO · 300 gallons report · notice · mapended
to 4:30 PM“N/A” · 9557 Morning Walk Drive · SSO · 750 gallons report · noticeended
to 7:30 PM“Did not reach waters of the State was contained onsite.” · 19033 Shepherdstown Pike · SSO · 1,500 gallons report · notice · mapended
to 3:45 AM“Did not reach water or stormdrain” · 18616 Amanda Ln · SSO · 750 gallons report · notice · mapended
to 3:20 PM“N/A” · 14640-14644 Citicorp · SSO · 400 gallons report · notice · mapended

Sources: MDE Reported Sewer Overflows (New for 2023), Maryland Open Data Portal (Socrata stgj-u72u), retrieved 2026-11-03 08:17 UTC. A report's record id and times show when you hover or focus its "report" link.

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Showing the latest 25 records of 26 records.See them all with filters.

All reports in Maryland by year: 2026 (6 from Washington County Department of Water Quality) · 2025 (9 from Washington County Department of Water Quality) · 2024 (6 from Washington County Department of Water Quality) · 2023 (5 from Washington County Department of Water Quality)

Other sewer operators on these waters

The last 90 days

Last 90 days, hour by hour. Red: discharge or advisory reported. Amber: caution. Hatched amber: end not confirmed. Grey: no current status on the water outline. Purple hatching: source update overdue.

No discharge, advisory or caution periods are shown for the waters this sewer operator's reports were placed on in this time span. Check downstream stretches and source coverage.

Source: DirtyWaterWatch calculations using the reports named above and the published status rules. Updated 2026-11-03 08:50 UTC.

Reported discharges over time

  • Discharges reported by Washington County Department of Water Quality, last 12 months7December 2025 to November 2026Verified reports where available, else notices; revisions and duplicates counted once.
  • Days with a discharge reported by Washington County Department of Water Quality, last 12 months7December 2025 to November 2026A day counts once however many discharges were under way on it. Verified reports where available, else notices; revisions and duplicates counted once.
  • Hours with a discharge or advisory status from Washington County Department of Water Quality's reports, last 12 months10December 2025 to November 2026Red hours by the map's rules: each discharge to its reported end plus the state's post-discharge period; overlapping hours count once.
  • 2026 season with a discharge or advisory status (Washington County Department of Water Quality)0.1%May to October 2026Share of May 1 to October 31 hours with red status by the map's rules, of the hours a source covered.

Combined sewer overflow (CSO): sewage mixed with rainwater spills from a shared sewer system. Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater. Treatment bypass: wastewater skips one or more treatment steps. Blended discharge: wastewater that skipped some treatment is mixed with treated wastewater. Outfall: a pipe or outlet where wastewater enters a water body.

Reported discharges per month

26 reported discharges, January 2022 to November 2026.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Treatment bypass, blended or other
  • No tracked source for this period
  • Incomplete source coverage
No tracked source

No tracked source covers January 2022 to December 2022.

Source: md-mde-overflows. Records cover January 4, 2023 to November 3, 2026.

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Hours with a discharge or advisory status per month

Hours when a water had a discharge or advisory status from this sewer operator's reports, under DirtyWaterWatch rules.

  • Discharge or advisory reported
  • No tracked source for this period
  • Incomplete source coverage
No tracked source

No tracked source covers January 2022 to December 2022. Official beach and cyanobacteria (harmful blue-green algae) advisories are counted on water pages only.

Source: md-mde-overflows. Records cover January 4, 2023 to November 3, 2026.

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Days with a reported discharge per month

A day counts when any counted discharge was under way on it, from its start to its reported end in Eastern Time; a report with no end counts its start day.

  • No tracked source for this period
  • Incomplete source coverage
No tracked source

No tracked source covers January 2022 to December 2022.

Source: md-mde-overflows. Records cover January 4, 2023 to November 3, 2026.

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Reported volume per year

Gallons (axis: K thousand, M million), summed from the 26 reports that gave a volume as a number.

  • Incomplete source coverage
Limited records

Source: md-mde-overflows. Records cover January 4, 2023 to November 3, 2026.

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Hours with a discharge or advisory status per year

Hours with a discharge or advisory status each year under DirtyWaterWatch rules; 2026 to date.

  • Discharge or advisory reported
  • Incomplete source coverage
Limited records

Official beach and cyanobacteria (harmful blue-green algae) advisories are counted on water pages only.

Source: md-mde-overflows. Records cover January 4, 2023 to November 3, 2026.

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Share of the May to October season with a discharge or advisory status

Share of the hours from May 1 to October 31 with a discharge or advisory status under DirtyWaterWatch rules.

  • Discharge or advisory reported

Official beach and cyanobacteria (harmful blue-green algae) advisories are counted on water pages only.

Source: md-mde-overflows. Records cover January 4, 2023 to November 3, 2026.

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Reported discharges by calendar month, all years

Every counted discharge report, by the calendar month it began.

Months are summed over every year a tracked source covers; the table gives the number of years behind each month.

Source: md-mde-overflows. Records cover January 4, 2023 to November 3, 2026.

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Reported discharges by wastewater outlet

Wastewater outlets with the most tracked discharge records: 10 of 25, all years. Counts depend on reporting coverage and do not measure legal compliance or harm.

Source: md-mde-overflows. Records cover January 4, 2023 to November 3, 2026.

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How these charts are counted

We count each discharge once. Where a source publishes notices and confirmed reports, we use confirmed reports for an operator's month when available; otherwise we use notices. We combine revisions and exclude duplicate state reports copied by the U.S. Environmental Protection Agency (EPA). Monthly and yearly totals appear separately. Status hours follow this site's rules. Shaded gaps mean missing coverage, not zero discharges.

  • md-mde-overflows: records from January 4, 2023 to the latest update