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Florida / Sewer operators /

City of Panama City (Millville AWT and St Andrews WWTF)

Sewer utility · Florida · Panama City

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)
FL0170909, FL0020451
Wastewater outlets
3 treatment plant outfalls listed by EPA or state agencies; 253 places named in its own overflow reports (provisional locations) · List
Waters listed as receiving wastewater
St. Andrew Bay; Watson Bayou
Tracked waters
Saint Andrew Bay, FL, Watson Bayou, FL, Massalina Bayou, FL, Robinson Bayou, FL, Saint Andrew's Bay, FL, Goose Bayou, FL, Pretty Bayou, FL, Johnson Bayou, FL, Posten Bayou, FL, North Bay, FL
Discharge records counted
558 records · latest
Total reported volume in these records
7,438,388 gallons across the 542 records that give a volume (16 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 2026-11-05 01:25 UTC.

Public notices and alerts

Get alerts from City of Panama City (Millville AWT and St Andrews WWTF)

Source: City of Panama City (Millville AWT and St Andrews WWTF)'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.

3 treatment plant outfalls listed by EPA or state agencies; 253 places named in its own overflow reports (provisional locations).

Treatment plant outfalls

3 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)

253 places · 76 not on the map (reports say the sewage reached no water)

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 · 42 overflow reports, latest Oct 20, 2026 · confidence high · no water record yet
  • Reported place · 23 overflow reports, latest Feb 11, 2026 · confidence high · no water record yet
  • Reported place · 17 overflow reports, latest Jan 1, 2023 · confidence high · no water record yet
  • Reported place · 16 overflow reports, latest Oct 27, 2026 · confidence high · no water record yet
  • Reported place · 15 overflow reports, latest Jul 6, 2025 · confidence high · no water record yet
  • Reported place · 11 overflow reports, latest Jan 31, 2024 · confidence high · no water record yet
  • Reported place · 9 overflow reports, latest Oct 19, 2026 · confidence high · no water record yet
  • Reported place · 9 overflow reports, latest Oct 17, 2022 · confidence high · no water record yet
  • Reported place · 8 overflow reports, latest Oct 10, 2026 · confidence high · no water record yet
  • Reported place · 8 overflow reports, latest Feb 11, 2023 · confidence high · no water record yet
  • Reported place · 8 overflow reports, latest Sep 12, 2022 · confidence high · no water record yet
  • Reported place · 8 overflow reports, latest Oct 11, 2021 · confidence high · no water record yet

Showing 12 of 253.

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

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

Reports linked to City of Panama City (Millville AWT and St Andrews WWTF), newest first
WhenReportStatus
to Nov 2Saint Andrew Bay · Intersection of W Beach Dr and Fairy Ave · Bypass · 2,400 gallons report · notice · mapto Nov 6, 12:00 AM
to Oct 27Watson Bayou · 1213 N Palo Alto Ave - Ls 65 · Bypass · 40 gallons report · notice · mapended
to Oct 20Massalina Bayou · 530 E 6th St Ls 41 - 10.20.26 · SSO · 105 gallons report · notice · mapended
to Oct 19Water not mapped · Ls 65 · SSO · 175 gallons report · notice · mapended
to Oct 18Massalina Bayou · Ls 41 · Bypass · 300 gallons report · notice · mapended
to Oct 15Water not mapped · Ls 49 · Bypass · 250 gallons report · notice · mapended
to Oct 14Massalina Bayou · 530 E 6th St · Bypass · 405 gallons report · notice · mapended
to Oct 14Watson Bayou · 1806 E 3rd St Ls 70 · SSO · 16,875 gallons report · notice · mapended
to Oct 11Water not mapped · 110 Airport Rd Ls 61 · SSO · 59,696 gallons report · notice · mapended
to Oct 10Water not mapped · 2512 W 21st St · SSO · 1,375 gallons report · notice · mapended
to Oct 10Water not mapped · 1806 E 3rd St · SSO · 8,200 gallons report · notice · mapended
to Oct 10Water not mapped · 513 Bunkers Cove Rd · SSO · 1,050 gallons report · notice · mapended
to Oct 11Massalina Bayou · 530 E 6th St Ls # 41 · SSO · 9,000 gallons report · notice · mapended
to Oct 10Massalina Bayou · 1517 W 23rd St · SSO · 2,700 gallons report · notice · mapended
to Oct 10Massalina Bayou · 300 Massalina Dr Ls 79 · SSO · 10,275 gallons report · notice · mapended
to Sep 23Water not mapped · 2020 Dorothy Ave SSO · SSO · 250 gallons report · notice · mapended
to Sep 19Water not mapped · 1213 N Palo Alto Ave · Bypass · 945 gallons report · notice · mapended
to Sep 18Water not mapped · 1213 N Palo Alto Ave · SSO · 350 gallons report · notice · mapended
to Sep 7Water not mapped · 803 E 14th St · Bypass · 55 gallons report · notice · mapended
to Sep 4Water not mapped · 1401 N Foster Ave Ls 21 · Bypass · 230 gallons report · notice · mapended
to Sep 2Robinson Bayou · 3014 Stanford Rd · SSO · 1,050 gallons report · notice · mapended
to Aug 25Watson Bayou · 1001 Harris Ave · SSO · 300 gallons report · notice · mapended
to Aug 20Watson Bayou · 1213 N Palo Alto. 8.20.2026 · SSO · 50 gallons report · notice · mapended
Water not mapped · 3132 W 20th Ct · SSO · volume not reported report · notice · mapongoing
to Jul 17Massalina Bayou · 530 E 6th St · SSO · 25 gallons report · notice · mapended

Sources: Florida DEP Public Notice of Pollution, sewage and wastewater notices (PNP feature service), retrieved 2026-11-05 01:05 UTC. A report's record id and times show when you hover or focus its "report" link.

Download these reports as CSV

Showing the latest 25 records of 565 records.See them all with filters.

All reports in Florida by year: 2026 (68 from City of Panama City (Millville AWT and St Andrews WWTF)) · 2025 (41 from City of Panama City (Millville AWT and St Andrews WWTF)) · 2024 (73 from City of Panama City (Millville AWT and St Andrews WWTF)) · 2023 (96 from City of Panama City (Millville AWT and St Andrews WWTF)) · 2022 (82 from City of Panama City (Millville AWT and St Andrews WWTF)) · 2021 (134 from City of Panama City (Millville AWT and St Andrews WWTF)) · 2020 (31 from City of Panama City (Millville AWT and St Andrews WWTF)) · 2019 (37 from City of Panama City (Millville AWT and St Andrews WWTF)) · 2018 (2 from City of Panama City (Millville AWT and St Andrews WWTF)) · 2017 (1 from City of Panama City (Millville AWT and St Andrews WWTF))

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.
  • Caution: to the latest update
    1 report: Saint Andrew Bay 1
    Show records

    The records are also in the report table on this page.

  • Discharge or advisory reported: to
    1 report: Saint Andrew Bay 1
    Show records

    The records are also in the report table on this page.

  • Caution: to
    1 report: Watson Bayou 1
    Show records

    The records are also in the report table on this page.

  • Discharge or advisory reported: to
    1 report: Watson Bayou 1
    Show records

    The records are also in the report table on this page.

  • Caution: to
    2 reports: Massalina Bayou 2
    Show records

    The records are also in the report table on this page.

  • Discharge or advisory reported: to
    1 report: Massalina Bayou 1
    Show records

    The records are also in the report table on this page.

  • Caution: to
    1 report: Massalina Bayou 1
    Show records

    The records are also in the report table on this page.

  • Discharge or advisory reported: to
    1 report: Massalina Bayou 1
    Show records

    The records are also in the report table on this page.

  • Caution: to
    2 reports: Massalina Bayou 1, Watson Bayou 1
    Show records

    The records are also in the report table on this page.

  • Discharge or advisory reported: to
    2 reports: Massalina Bayou 1, Watson Bayou 1
    Show records

    The records are also in the report table on this page.

8 earlier periods appear as you scroll.

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 City of Panama City (Millville AWT and St Andrews WWTF), last 12 months75December 2025 to November 2026Verified reports where available, else notices; revisions and duplicates counted once.
  • Days with a discharge reported by City of Panama City (Millville AWT and St Andrews WWTF), last 12 months68December 2025 to November 2026A day counts once however many discharges were under way on it.
  • Hours with a discharge or advisory status from City of Panama City (Millville AWT and St Andrews WWTF)'s reports, last 12 months1,920December 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 (City of Panama City (Millville AWT and St Andrews WWTF))28%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. Blended discharge: wastewater that skipped some treatment is mixed with treated wastewater.

Reported discharges per month

358 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

10 discharge reports have no end time and are not marked ongoing; under DirtyWaterWatch rules they show caution, not a discharge or advisory status, and add no hours here. 1 discharge reported to last more than 31 days is counted as 31 days. 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

558 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 542 reports that gave a volume as a number (16 did not).

  • Incomplete source coverage

16 of 558 discharge reports gave no volume as a number; only numbers are summed.

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

10 discharge reports have no end time and are not marked ongoing; under DirtyWaterWatch rules they show caution, not a discharge or advisory status, and add no hours here. 1 discharge reported to last more than 31 days is counted as 31 days. 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. 10 discharge reports have no end time and are not marked ongoing; under DirtyWaterWatch rules they show caution, not a discharge or advisory status, and add no hours here. 1 discharge reported to last more than 31 days is counted as 31 days. 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 395, 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