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City of Largo - WWTP

Sewage treatment plant, major discharger, Clearwater, Florida. NPDES permit FL0026603, in force until Oct 15, 2029. Last 12 months: over a limit 4 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 90 days after each period: form 1 monthly (42 values), form Q quarterly (1 value)
Last report on file
September 2026
Oct 2024 – Sep 2025
9 values over a limit, 0 required values missing, 0 of 16 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
February 2026% of fecal coliform samples < detectable, monthly minimum71≥ 75 %5%
March 2026% of fecal coliform samples < detectable, monthly minimum35≥ 75 %53%
May 2026Phosphorus, total [as P], maximum2.85≤ 2 mg/L43%
June 2026Phosphorus, total [as P], maximum2.18≤ 2 mg/L9%

Limits in force (83)

ParameterStatisticLimitMonths
Plant capacity fact. percent of capacitymonthly averagereport only (%)all year
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedweekly average≤ 7.5 mg/Lall year
Solids, total suspendedmaximum≤ 10 mg/Lall year
Solids, total suspendedmonthly average≤ 6.25 mg/Lall year
Solids, total suspendedmaximum≤ 5 mg/Lall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedannual average≤ 5 mg/Lall year
Nitrogen, total [as N]weekly average≤ 4.5 mg/Lall year
Nitrogen, total [as N]maximum≤ 6 mg/Lall year
Nitrogen, total [as N]monthly average≤ 3.75 mg/Lall year
Nitrogen, total [as N]monthly totalreport only (ton/mo)all year
Nitrogen, total [as N]5-year average≤ 19 ton/yrall year
Nitrogen, total [as N]annual total≤ 28.5 ton/yrall year
Nitrogen, total [as N]annual average≤ 3 mg/Lall year
Phosphorus, total [as P]weekly average≤ 1.5 mg/Lall year
Phosphorus, total [as P]maximum≤ 2 mg/Lall year
Phosphorus, total [as P]monthly average≤ 1.25 mg/Lall year
Phosphorus, total [as P]annual average≤ 1 mg/Lall year
Cyanide, total [as CN]maximum≤ 5.2 ug/Lall year
Dichlorobromomethanemaximumreport only (ug/L)all year
Dichlorobromomethaneannual average≤ 22 ug/Lall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantannual average≤ 18 MGDall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantannual average≤ 15 MGDall year
Chlorine, total residualmaximum≤ .01 mg/Lall year
Chlorine, total residualminimum≥ 1 mg/Lall year
% of fecal coliform samples < detectablemonthly minimum≥ 75 %all year
Perfluorooctanoic acid (PFOA)maximumreport only (ng/L)all year
Perfluorobutanoic acid (PFBA)maximumreport only (ng/L)all year
Perfluorooctanesulfonamide (PFOSA)maximumreport only (ng/L)all year
Perfluoropentanoic acid (PFPeA)maximumreport only (ng/L)all year
Perfluorohexanoic acid (PFHxA)maximumreport only (ng/L)all year
Perfluoroheptanoic acid (PFHpA)maximumreport only (ng/L)all year
Perfluorononanoic acid (PFNA)maximumreport only (ng/L)all year
Perfluorodecanoic acid (PFDA)maximumreport only (ng/L)all year
Perfluoroundecanoic acid (PFUnA)maximumreport only (ng/L)all year
Perfluorododecanoic acid (PFDoA)maximumreport only (ng/L)all year
Perfluorotridecanoic acid (PFTrDA)maximumreport only (ng/L)all year
Perfluorotetradecanoic acid (PFTeDA)maximumreport only (ng/L)all year
N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)maximumreport only (ng/L)all year
N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)maximumreport only (ng/L)all year
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)maximumreport only (ng/L)all year
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)maximumreport only (ng/L)all year
Perfluorobutanesulfonic acid (PFBS)maximumreport only (ng/L)all year
Perfluorodecanesulfonic acid (PFDS)maximumreport only (ng/L)all year
Perfluoroheptanesulfonic acid (PFHpS)maximumreport only (ng/L)all year
Perfluorohexanesulfonic acid (PFHxS)maximumreport only (ng/L)all year
Perfluorooctanesulfonic acid (PFOS)maximumreport only (ng/L)all year
1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)maximumreport only (ng/L)all year
1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)maximumreport only (ng/L)all year
1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)maximumreport only (ng/L)all year
Perfluoropentanesulfonic acid (PFPeS)maximumreport only (ng/L)all year
Perfluorononanesulfonic acid (PFNS)maximumreport only (ng/L)all year
Hexafluoropropylene oxide dimer acid (HFPO-DA)maximumreport only (ng/L)all year
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)maximumreport only (ng/L)all year
Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)maximumreport only (ng/L)all year
Perfluorododecanesulfonic acid (PFDoS)maximumreport only (ng/L)all year
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)maximumreport only (ng/L)all year
N-methyl perfluorooctanesulfonamide (NMeFOSA)maximumreport only (ng/L)all year
N-ethyl perfluorooctanesulfonamide (NEtFOSA)maximumreport only (ng/L)all year
Coliform, fecal generalmaximum≤ 25 #/100mLall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 7.5 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 6.25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]annual average≤ 5 mg/Lall year
3-Perfluoropropyl propanoic acid (3:3 FTCA)maximumreport only (ng/L)all year
Perfluoro-3-methoxypropanoic acid (PFMPA)maximumreport only (ng/L)all year
9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)maximumreport only (ng/L)all year
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)maximumreport only (ng/L)all year
3-Perfluoroheptyl propanoic acid (7:3 FTCA)maximumreport only (ng/L)all year
Perfluoro-4-methoxybutanoic acid (PFMBA)maximumreport only (ng/L)all year
2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)maximumreport only (ng/L)all year
IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelasminimum≥ 100 %all year
IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelasminimum≥ 100 %all year
IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelasminimum≥ 100 %all year
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaminimum≥ 100 %all year
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaminimum≥ 100 %all year
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaminimum≥ 100 %all year

How strict are these limits?

Cited limits by parameter: Florida's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/FL0026603 · MCP: https://passage-data.com/mcp