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Maryland / Sewer operators /

Frederick County Division of Water and Sewer Utilities

Sewer utility · Maryland · Frederick County

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)
MD0020737
Wastewater outlets
None with locations in our records
Waters listed as receiving wastewater
Monocacy River
Tracked waters
Monocacy River, MD, Davis Branch, MD, Hollow Road Creek, MD, Catoctin Creek, MD
Discharge records counted
21 records · latest
Total reported volume in these records
161,424 gallons across the 20 records that give a volume (1 without one)

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 Frederick County Division of Water and Sewer Utilities or the state publishes its notices (check them for an alert sign-up):

Source: Frederick County Division of Water and Sewer Utilities'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.

Reports linked to Frederick County Division of Water and Sewer Utilities, newest first
WhenReportStatus
to 4:00 PM“Storm drain” · 30 North Place · SSO · 200 gallons report · notice · mapended
to 5:17 PM“Stormwater management system that dumps into a retention pond.” · 30 North Place · SSO · 9,900 gallons report · noticeended
to 6:51 PM“Released onto ground, nearest waterway UT to Town Branch, use IV-P” · near 8893 Green Valley Road · SSO · 3,400 gallons report · noticeended
to 11:00 PM“Storm Drain” · 10 Monocacy Boulevard · SSO · volume not reported report · noticeended
to 11:10 AM“entered ditch along side roadway. Did not enter waters” · 8701 Green Valley Rd · SSO · 6,800 gallons report · noticeended
to 8:15 PMDavis Branch · 7 Bye Alley · SSO · 3,620 gallons report · notice · mapended
to Oct 23 ’25, 12:00 AMMonocacy River · 7106 Geoffrey Way · SSO · 14,320 gallons report · notice · mapended
to 11:25 AM“Inlet for Lake Linganore, Reached inlet after flowing onto grassy area, flowing thru woods to the inlet.” · Eaglehead Drive · SSO · 250 gallons report · notice · mapended
to May 14 ’25, 6:30 AMHollow Road Creek · 7298 Beechtree Lane · SSO · 34,000 gallons report · notice · mapended
to 3:55 PM“did not enter Waters of the State” · 6812 Box Turtle Trail · SSO · 50 gallons report · notice · mapended
to Nov 12 ’24, 5:00 PMCatoctin Creek · 3352 Westport Drive · SSO · 50 gallons report · notice · mapended
to Oct 23 ’24, 3:30 PMMonocacy River · 7106 Geoffrey Way · SSO · 14,320 gallons report · notice · mapended
to 12:37 PM“Flowed into storm drain which flows into Linganore Creek” · Hook Court · SSO · 54 gallons report · noticeended
to 5:40 PM“Monocacy River” · Pine Cliff Park at Manhole 10 · SSO · 20,300 gallons report · notice · mapended
to 6:00 PM“Stormwater inlet.” · 6122 Aster View Lane · SSO · 50 gallons report · notice · mapended
to Dec 21 ’23, 11:00 AM“Storm Management Pond.” · 7101 Geoffrey Way · SSO · 12,000 gallons report · notice · mapended
to Dec 18 ’23, 9:10 AM“It appears the overflow was contained on site and no wastewater entered the waters of the state.” · 166 West Main Street · SSO · 10,500 gallons report · notice · mapended
to 12:00 PM“Lake Linganore and Lake Merle” · 6925 Meadow Lake Rd · SSO · 4,800 gallons report · notice · mapended
to 2:15 PM“unnamed stream, possibly starts with pond or stormwater pond in Urbana park area and ends up in Peter Pan Run.” · wooded area off Caldonia Drive · SSO · 1,010 gallons report · notice · mapended
to 9:30 PM“None, went into grass of wooded area.” · 9020 Amelung Street · SSO · 24,000 gallons report · notice · mapended
to 2:30 PM“Lake Merle” · 6957 and 6945 Meadowlake Road · SSO · 1,800 gallons report · noticeended

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.

Download these reports as CSV

All reports in Maryland by year: 2026 (5 from Frederick County Division of Water and Sewer Utilities) · 2025 (5 from Frederick County Division of Water and Sewer Utilities) · 2024 (5 from Frederick County Division of Water and Sewer Utilities) · 2023 (6 from Frederick County Division of Water and Sewer Utilities)

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 Frederick County Division of Water and Sewer Utilities, last 12 months5December 2025 to November 2026Verified reports where available, else notices; revisions and duplicates counted once.
  • Days with a discharge reported by Frederick County Division of Water and Sewer Utilities, last 12 months5December 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 Frederick County Division of Water and Sewer Utilities's reports, last 12 months21December 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 (Frederick County Division of Water and Sewer Utilities)0.3%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

21 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 20 reports that gave a volume as a number (1 did not).

  • Incomplete source coverage
Limited records

1 of 21 discharge reports gave no volume as a number; only numbers are summed.

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 19, 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.

Show table
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