Clean Water Act discharge permit · NPDES FL0039721

RIDAUGHT LANDING WWTF, Middleburg, FL: NPDES FL0039721 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
15Pollutants under a numeric limit
6Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

RIDAUGHT LANDING WWTF, held by Clay County Utility Authority, holds NPDES permit FL0039721, which discharges to Little Black Cr 2368, St Johns R, Class Iii Fresh. EPA’s file records it issued September 22, 2017 and expiring October 2, 2022.

RIDAUGHT LANDING WWTF, Middleburg, Florida: Individual permit FL0039721, held by Clay County Utility Authority; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued September 22, 2017, term to October 2, 2022, by Florida Department of Environmental Protection; discharges to Little Black Cr 2368, St Johns R, Class III Fresh.

Nitrogen, total [as N]: 6 limits, 26 violations of any kind, 20 effluent exceedances, latest January 31, 2016, largest 13,900% over the limit.
Phosphorus, total [as P]: 6 limits, 26 violations of any kind, 20 effluent exceedances, latest August 31, 2017, largest 60% over the limit.
BOD, carbonaceous [5 day, 20 C]: 5 limits, 21 violations of any kind, 17 effluent exceedances, latest June 30, 2017, largest 1,132% over the limit.
Solids, total suspended: 5 limits, 5 violations of any kind, 1 effluent exceedance, latest June 30, 2011, largest 100% over the limit.
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubia: 3 limits, 4 violations of any kind, 1 effluent exceedance, latest November 30, 2018, largest 81% over the limit.
LC50 Static Renewal 96Hr Acute Cyprinella leedsi: 3 limits, 4 violations of any kind, 1 effluent exceedance, latest November 30, 2018, largest 94% over the limit.
% of fecal coliform samples < detectable: 0 limits, 4 violations of any kind, 0 effluent exceedances.
Chlorine, total residual: 2 limits, 3 violations of any kind, 0 effluent exceedances.
pH: 2 limits, 2 violations of any kind, 0 effluent exceedances.
Flow, in conduit or thru treatment plant: 2 limits, 2 violations of any kind, 0 effluent exceedances.
Flow, total: 2 limits, 2 violations of any kind, 0 effluent exceedances.
Oxygen, dissolved [DO]: 1 limit, 2 violations of any kind, 0 effluent exceedances.
Nitrogen, ammonia total [as N]: 6 limits, 1 violation of any kind, 0 effluent exceedances.
Coliform, fecal general: 1 limit, 1 violation of any kind, 0 effluent exceedances.
Ammonia, unionized: 0 limits, 1 violation of any kind, 0 effluent exceedances.
BOD, carb-5 day, 20 deg C, percent removal: 0 limits, 1 violation of any kind, 0 effluent exceedances.
Solids, suspended percent removal: 0 limits, 1 violation of any kind, 0 effluent exceedances.
E. coli: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Temperature, water deg. centigrade: 1 limit, 0 violations of any kind, 0 effluent exceedances.

July 2, 2026: WW SSO - Overflow to Dry Land or Building Backup (ST6).
June 4, 2026: WW SSO - Overflow to Dry Land or Building Backup (ST6).

Florida holds 151 Publicly owned treatment works coverages of this permit type in EPA’s file; 69 were issued before FL0039721. Clay County Utility Authority holds 15 permits in Florida.

Other permits held by Clay County Utility Authority

MILLER STREET WWTF, Orange Park: FL0025151, issued July 19, 2019
FLEMING ISLAND REGIONAL WWTF, Orange Park: FL0043834, issued June 12, 2019
SPENCER'S CROSSING WWTF, Orange Park: FL0173371, issued October 11, 2019
CCUA - TMDL AGGREGATE TN, Middleburg: FL0629006, issued May 23, 2019
MILLER STREET WWTF, Orange Park: FLL025151, issued January 1, 2021
RIDAUGHT LANDING WWTF, Clay Count: FLL039721, issued January 1, 2021
FLEMING ISLAND REGIONAL WWTF, Orange Park: FLL043834, issued January 1, 2021
SPENCER'S CROSSING WWTF, Orange Park: FLL173371, issued January 1, 2021
RIDAUGHT LANDING REGIONAL WWTF, Middleburg: FLR05F443, issued October 28, 2021
FLEMING ISLAND REGIONAL WWTF, Orange Park: FLR05F444, issued October 28, 2021

Coverages issued nearest FL0039721

August 11, 2017: CITY OF COOPER CITY WWTP, Cooper City, FL0040398, held by City of Pembroke Pines WWTP
August 11, 2017: CENTRAL REGION RECLAIMED WATER FACILITY, West Palm Beach, FL0471275, held by Palm Beach County Water Utilities Department
August 30, 2017: CHARLOTTE COUNTY UTILITIES - EASTPORT WWTP, Port Charlotte, FL0040291, held by Charlotte County Utilities Department
August 31, 2017: MARSH LANDING WWTF, Ponte Vedra Beach, FL0044253, held by Saint Johns County Utility Department
September 14, 2017: FORT PIERCE UTILITY AUTHORITY--WWTF., Fort Pierce, FL0027278, held by Fort Pierce Utilities Authority
September 26, 2017: COLLIER COUNTY SOUTH COUNTY WRF, Naples, FL0141356, held by Collier County Water - Sewer District
October 5, 2017: MARTIN COUNTY TROPICAL FARMS WWTF, Stuart, FL0043214, held by Martin County
October 13, 2017: FANG - CAMP BLANDING WWTF, Starke, FL0022853, held by Florida Army National Guard - Camp Blanding
October 18, 2017: WILLIAM TYSON WWTP, Arcadia, FL0027511, held by City of Arcadia
October 23, 2017: BALDWIN WWTF, Baldwin, FL0027812, held by Baldwin, Town of

RIDAUGHT LANDING WWTF among its neighbors

EPA’s permit file holds 37 discharge permits in the Little Black Creek subwatershed (HUC 030801031101), FL0039721 among them. Its county holds 185, 7 of them major permits; FL0039721 is a major permit.

Other permits in the Little Black Creek subwatershed (HUC 030801031101)

BAXLEY VILLAS, Middleburg: FLR10XN66, minor permit, permit term to March 22, 2030
BRANNAN MILL PLANTATION, Middleburg: FLR10YK52, minor permit, permit term to April 17, 2031
BRANNAN MILL PLANTATION, Middleburg: FLR20IA99, minor permit, permit term to March 19, 2030
CARMEL COURT TOWNHOMES AT BAY VILLAGES, Orange Park: FLR10XC98, minor permit, permit term to September 18, 2029
CARMEL CT, Orange Park: FLR20GC59, minor permit, permit term to March 10, 2028
CHALLENGER CENTER TOWNHOMES, Middleburg: FLR10WW13, minor permit, permit term to June 5, 2029
CHESWICK SOUTH, Orange Park: FLR10VQ76, minor permit, permit term to January 11, 2028
CIRCLE K HENLEY RD, Middleburg: FLG915233, minor permit, permit term to November 7, 2029
CORSAIR, Middleburg: FLR20GK04, minor permit, permit term to June 23, 2028
CR 220 WIDENING-PHASE 1, Middleburg: FLR20HU63, minor permit, permit term to December 25, 2029

Identity

Facility as filed	RIDAUGHT LANDING WWTF
Permittee as filed	Clay County Utility Authority
NPDES ID	FL0039721
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Major discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	September 22, 2017
Expiration date	October 2, 2022
Issuing agency	Florida Department of Environmental Protection
Address	Middleburg, FL 32068
Receiving water	Little Black Cr 2368, St Johns R, Class III Fresh
Subwatershed	Little Black Creek (HUC 030801031101)

Effluent limits and exceedances

19Pollutants on file
15Under a numeric limit
17With a violation of any kind
6With an effluent exceedance

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 measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Nitrogen, total [as N]	6	26	20	January 31, 2016	13,900% over the limit
Phosphorus, total [as P]	6	26	20	August 31, 2017	60% over the limit
BOD, carbonaceous [5 day, 20 C]	5	21	17	June 30, 2017	1,132% over the limit
Solids, total suspended	5	5	1	June 30, 2011	100% over the limit
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubia	3	4	1	November 30, 2018	81% over the limit
LC50 Static Renewal 96Hr Acute Cyprinella leedsi	3	4	1	November 30, 2018	94% over the limit
% of fecal coliform samples < detectable	0	4	0
Chlorine, total residual	2	3	0
pH	2	2	0
Flow, in conduit or thru treatment plant	2	2	0
Flow, total	2	2	0
Oxygen, dissolved [DO]	1	2	0
Nitrogen, ammonia total [as N]	6	1	0
Coliform, fecal general	1	1	0
Ammonia, unionized	0	1	0
BOD, carb-5 day, 20 deg C, percent removal	0	1	0
Solids, suspended percent removal	0	1	0
E. coli	2	0	0
Temperature, water deg. centigrade	1	0	0

Inspections, violations and enforcement

2Single-event violations

Date	What EPA recorded	Agency
July 2, 2026	WW SSO - Overflow to Dry Land or Building Backup	ST6
June 4, 2026	WW SSO - Overflow to Dry Land or Building Backup	ST6

Inspections

EPA’s inspection file holds no inspection for NPDES FL0039721.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES FL0039721.

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

This public-records page covers Clean Water Act NPDES permit FL0039721 for the RIDAUGHT LANDING WWTF in Middleburg, FL, held by Clay County Utility Authority, with a permit status listed as administratively continued and a Major Discharger class. The page lists 15 pollutants under a numeric limit and 6 pollutants with an effluent exceedance.