St Johns County Utility Dept

NPDES permit FL0670651 · Minor POTW · effective, expires 2026-12-27 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

5values over a limit
0required values missing, on 0 form(s)
0of 12 forms filed late

Last period with anything received: 2026-07-31. Most often over: % of fecal coliform samples < detectable (5).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (58)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMAXIMUM report only all year
001Plant capacity fact. percent of capacityMO TOTAL report only all year
001Oxygen, dissolved [DO]MINIMUM >= 5 mg/L all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspendedMAXIMUM <= 5 mg/L all year
001Solids, total suspendedMO AVG report only all year
001Nitrogen, total [as N]MAXIMUM <= 6 mg/L all year
001Nitrogen, total [as N]WKLY AVG <= 4.5 mg/L all year
001Nitrogen, total [as N]MO AVG <= 3.75 mg/L all year
001Nitrogen, total [as N]MO TOTAL report only all year
001Nitrogen, total [as N]ANNL TOT <= 12943 lb/yr all year
001Nitrogen, total [as N]ANNL AVG <= 3 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MAXIMUM report only all year
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MAXIMUM report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 0 mg/L all year
001Nitrogen, ammonia total [as N]MAXIMUM <= 0 mg/L all year
001Phosphorus, total [as P]MAXIMUM <= 2 mg/L all year
001Phosphorus, total [as P]WKLY AVG <= 1.5 mg/L all year
001Phosphorus, total [as P]MO AVG <= 1.25 mg/L all year
001Phosphorus, total [as P]MO TOTAL report only all year
001Phosphorus, total [as P]ANNL TOT <= 3799 lb/yr all year
001Phosphorus, total [as P]ANNL AVG <= 1 mg/L all year
001Hardness, total [as CaCO3]MAXIMUM report only all year
001Iron, total recoverableMAXIMUM <= 1 mg/L all year
001Silver total recoverableMAXIMUM <= .07 ug/L all year
001Lead, total recoverableMAXIMUM report only all year
001Lead, total recoverableMAXIMUM report only all year
001Lead, total recoverableMAXIMUM <= 0 ug/L all year
001Ultraviolet light intensityMAXIMUM report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantANNL AVG <= 3 MGD all year
001Flow, in conduit or thru treatment plantQRTR AVG report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantANNL AVG <= 3 MGD all year
001% of fecal coliform samples < detectableMO TOTAL <= 75 % all year
001E. coliMO GEOMN <= 126 #/100mL all year
001E. coli90TH % <= 410 #/100mL all year
001Ultraviolet light transmittanceMINIMUM >= 55 % all year
001Ultraviolet light dosageMINIMUM >= 100 mW-sec/cm2 all year
001Mercury, total recoverableMAXIMUM <= .012 ug/L all year
001Mercury, total recoverableMAXIMUM <= .012 ug/L all year
001Coliform, fecal generalMAXIMUM <= 25 #/100mL all year
001BOD, carbonaceous [5 day, 20 C]MAXIMUM <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 7.5 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 6.25 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]ANNL AVG <= 5 mg/L all year
001Flow, totalANNL TOT <= 328.5 Mgal/yr all year
001Flow, totalMO TOTAL report only all year
001LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaMINIMUM >= 100 % all year
001LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaMINIMUM >= 100 % all year
001LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaMINIMUM >= 100 % all year
001LC50 Static Renewal 96Hr Acute Cyprinella leedsiMINIMUM >= 100 % all year
001LC50 Static Renewal 96Hr Acute Cyprinella leedsiMINIMUM >= 100 % all year
001LC50 Static Renewal 96Hr Acute Cyprinella leedsiMINIMUM >= 100 % all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states