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Florida / Sewer operators /

WILLIAM E DUNN WRF

Sewer operator · Florida · Palm Harbor

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.

Ringed dots mark treatment plant outfalls. Small hollow diamonds mark places named in its overflow reports (provisional). Square boat markers mark boat launches listed by OpenBoatLaunch.

Federal wastewater discharge permit (NPDES)
FL0128775
Wastewater outlets
11 treatment plant outfalls listed by EPA or state agencies; 13 places named in its own overflow reports (provisional locations) · List
Waters listed as receiving wastewater
St Joseph Sound; Brooker Creek; Lake Tarpon Canal
Tracked waters
Brooker Creek, FL, Lake Tarpon, FL, Saint Joseph Sound, FL, Cow Branch, FL
Discharge records counted
13 records · latest
Total reported volume in these records
185,321 gallons across the 13 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 2026-11-05 01:25 UTC.

Public notices and alerts

Get alerts from WILLIAM E DUNN WRF

Source: WILLIAM E DUNN WRF'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.

11 treatment plant outfalls listed by EPA or state agencies; 13 places named in its own overflow reports (provisional locations).

Treatment plant outfalls

11 outfalls

Source: U.S. Environmental Protection Agency (EPA) permit records (ICIS-NPDES permitted features): where a treatment plant’s permitted discharge leaves. No national source says whether a plant outfall is open or closed.

Places named in overflow reports (provisional)

13 places

Provisional location from overflow reports. Where the operator's own reports put an overflow: a manhole, pump station or plant. Not an outfall listed in a permit.

  • Reported place · 1 overflow report, latest Dec 7, 2018 · confidence medium · no water record yet
  • Reported place · 1 overflow report, latest Jul 27, 2018 · confidence medium · no water record yet
  • Reported place · 1 overflow report, latest Sep 17, 2017 · confidence medium · no water record yet
  • Reported place · 1 overflow report, latest Sep 13, 2017 · confidence medium · no water record yet
  • Reported place · 1 overflow report, latest Sep 12, 2017 · confidence medium · no water record yet
  • Reported place · 1 overflow report, latest Sep 12, 2017 · confidence medium · no water record yet
  • Reported place · 1 overflow report, latest Sep 12, 2017 · confidence medium · no water record yet
  • Reported place · 1 overflow report, latest Sep 12, 2017 · confidence medium · no water record yet
  • Reported place · 1 overflow report, latest Sep 11, 2017 · confidence medium · no water record yet
  • Reported place · 1 overflow report, latest Sep 11, 2017 · confidence medium · no water record yet
  • Reported place · 1 overflow report, latest Sep 11, 2017 · confidence medium · no water record yet
  • Reported place · 1 overflow report, latest Sep 11, 2017 · confidence medium · no water record yet

Showing 12 of 13.

Source: the operator's own overflow reports to the state. DirtyWaterWatch groups reports within 50 metres into one place and finds the water below it with U.S. Geological Survey river maps (NLDI, NHDPlus). Not a permitted outfall; provisional until an official outfall record exists.

Reports and advisories

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

Reports linked to WILLIAM E DUNN WRF, newest first
WhenReportStatus
to Dec 7 ’18Lake Tarpon · Pcu Ds-377 12.7.2018 · SSO · 1,200 gallons report · notice · mapended
to Jul 29 ’18Water not mapped · Pcu Ds-407 07-28-18 · SSO · 6,394 gallons report · notice · mapended
to Sep 17 ’17“Palm Harbor” · Pcu Ps 393 9.17.17 · SSO · 11,500 gallons report · notice · mapended
to Sep 13 ’17Saint Joseph Sound · Pcu Ds-337 9.13.17 · SSO · 1,000 gallons report · notice · mapended
to Sep 12 ’17Water not mapped · Pcu Ps451 9.12.17 · SSO · 31,966 gallons report · notice · mapended
to Sep 12 ’17Saint Joseph Sound · Pcu Ps 339 9.12.17 · SSO · 6,206 gallons report · notice · mapended
to Sep 12 ’17Water not mapped · Pcu Ps 310 9.12.17 · SSO · 2,068 gallons report · notice · mapended
to Sep 12 ’17Lake Tarpon · Pcu Ps 374 9/12/17 · SSO · 6,966 gallons report · notice · mapended
to Sep 11 ’17Lake Tarpon · Pcu Ds-376 9/11/17 · SSO · 10,004 gallons report · notice · mapended
to Sep 11 ’17Water not mapped · Pcu Ps 347 9.11.17 · SSO · 13,747 gallons report · notice · mapended
to Sep 11 ’17Water not mapped · Pcu Ds-346 9.11.17 · SSO · 7,875 gallons report · notice · mapended
to Sep 11 ’17Cow Branch · Pcu Ds-356 9-11-17 · SSO · 76,395 gallons report · notice · mapended
to Aug 25 ’17Water not mapped · Pcu Wed WRF Sa Ds 335 8-25-17 · SSO · 10,000 gallons report · notice · mapended

Sources: Florida DEP Public Notice of Pollution, sewage and wastewater notices (PNP feature service), retrieved 2026-11-04 09:03 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 Florida by year: 2018 (2 from WILLIAM E DUNN WRF) · 2017 (11 from WILLIAM E DUNN WRF)

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. Plum: algal bloom advisory. Red or amber with a light line inside: beach advisory or caution. Dotted: monthly report (days with discharge, dates not given). 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 2026-11-05 01:25 UTC.

Reported discharges over time

  • Discharges reported by WILLIAM E DUNN WRF, last 12 months0December 2025 to November 2026Verified reports where available, else notices; revisions and duplicates counted once.
  • Days with a discharge reported by WILLIAM E DUNN WRF, last 12 months0December 2025 to November 2026A day counts once however many discharges were under way on it.
  • Hours with a discharge or advisory status from WILLIAM E DUNN WRF's reports, last 12 months0December 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 (WILLIAM E DUNN WRF)0.0%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. Treatment bypass: wastewater skips one or more treatment steps. Blended discharge: wastewater that skipped some treatment is mixed with treated wastewater.

Reported discharges per month

0 reported discharges, January 2022 to November 2026.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Treatment bypass, blended or other

Source: fl-dep-pnp. Records cover January 1, 2022 to November 4, 2026.

Show table

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

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

Source: fl-dep-pnp. Records cover May 17, 2017 to November 4, 2026.

Show table

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.

Source: fl-dep-pnp. Records cover January 1, 2022 to November 4, 2026.

Show table

Reported discharges per year, 2017 to 2026

13 reported discharges, 2017 to 2026.

  • Combined sewer overflow
  • Sanitary sewer overflow
  • Treatment bypass, blended or other
  • Incomplete source coverage

Source: fl-dep-pnp. Records cover May 17, 2017 to November 4, 2026.

Show table

Reported volume per year

Gallons (axis: K thousand, M million), summed from the 13 reports that gave a volume as a number.

  • Incomplete source coverage

Source: fl-dep-pnp. Records cover May 17, 2017 to November 4, 2026.

Show table

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

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

Source: fl-dep-pnp. Records cover May 17, 2017 to November 4, 2026.

Show table

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
  • Season with incomplete source coverage

Seasons with incomplete source coverage: 2017. The share is of the hours a source covered. Official beach and cyanobacteria (harmful blue-green algae) advisories are counted on water pages only.

Source: fl-dep-pnp. Records cover May 17, 2017 to November 4, 2026.

Show table

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: fl-dep-pnp. Records cover May 17, 2017 to November 4, 2026.

Show table

Reported discharges by wastewater outlet

Wastewater outlets with the most tracked discharge records: 10 of 13, all years. Counts depend on reporting coverage and do not measure legal compliance or harm.

Source: fl-dep-pnp. Records cover May 17, 2017 to November 4, 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.

  • fl-dep-pnp: records from May 17, 2017 to the latest update