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Clean Water Act discharge permit · NPDES FL0043079

HILLIARD WWTF, Hilliard, FL: NPDES FL0043079 discharge permit, effluent exceedances, inspections, penalties

HILLIARD WWTF, held by Town of Hilliard, holds NPDES permit FL0043079, which discharges to Lower Saint Marys River Basin Class Iii Fresh 2119. EPA’s file records it issued November 20, 2019 and expiring November 19, 2024. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedHILLIARD WWTF
Permittee as filedTown of Hilliard
NPDES IDFL0043079
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedNovember 20, 2019
Expiration dateNovember 19, 2024
Issuing agencyFlorida Department of Environmental Protection
AddressHilliard, FL 32046
Receiving waterLower Saint Marys River Basin Class III Fresh 2119
Receiving water impaired303(D) Listed
SubwatershedUpper Little St. Marys River (HUC 030702040903)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Nitrogen, total [as N]4264178July 31, 2026593% over the limit
Solids, total suspended822646May 31, 2026364% over the limit
Nitrogen, ammonia total [as N]211545March 31, 20261,000% over the limit
Phosphorus, total [as P]617331May 31, 2020230% over the limit
Flow, in conduit or thru treatment plant310820March 31, 201012% over the limit
BOD, carbonaceous [5 day, 20 C]820417July 31, 20261,800% over the limit
Ammonia, unionized03414March 31, 201250% over the limit
Nitrite + Nitrate total [as N]4602October 31, 2025204% over the limit
Solids, suspended percent removal032December 31, 202560% over the limit
pH3881October 31, 2025
Coliform, fecal general4821January 31, 202611% over the limit
E. coli231January 31, 2026193% over the limit
Nitrogen, ammonia total [as NH4]021February 28, 202660% over the limit
Chlorine, total residual2520
Temperature, water deg. centigrade1310
Color [PT-CO units]1310
Oxygen, dissolved [DO]1310
Phosphorous, in total orthophosphate1310
Specific conductance1300
Nitrogen, Kjeldahl, total [as N]1300
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubia0300
LC50 Static Renewal 96Hr Acute Cyprinella leedsi0300
Plant capacity fact. percent of capacity1260
Copper, total recoverable1110
Nitrogen, ammonia, tot unionized [as N]1100
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia380
Nitrogen, nitrate total [as N]070
IC25 Static Renewal 7 Day Chronic Chrpimephales350
IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelas030
Hardness, total [as CaCO3]120
Iron, total recoverable120
Nickel, total recoverable120
Silver total recoverable120
Zinc, total recoverable120
Cadmium, total recoverable120
Lead, total recoverable120
BOD, carb-5 day, 20 deg C, percent removal010
Sulfate, total [as SO4]100
Chlorophyll A100
Mercury, total recoverable100

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

DateWhat EPA recordedAgency
July 27, 2021WW SSO - Overflow to Dry Land or Building BackupST6
April 19, 2020WW SSO - Overflow to Dry Land or Building BackupST6

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

This public-records page covers NPDES permit FL0043079 for the HILLIARD WWTF in Hilliard, FL, held by the Town of Hilliard, which discharges to the Lower Saint Marys River Basin Class III Fresh 2119 and is in the Upper Little St. Marys River subwatershed (HUC 030702040903). The permit, issued November 20, 2019 with an expiration date of November 19, 2024, is listed as administratively continued, with 13 pollutants under a numeric limit and 13 pollutants with an effluent exceedance.