Clean Water Act discharge permit · NPDES TX0139815

CITY OF TROY WWTP, Troy, TX: NPDES TX0139815 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
8Pollutants under a numeric limit
6Pollutants with an effluent exceedance
1Inspections on file
0Formal enforcement actions

CITY OF TROY WWTP, held by TROY, CITY OF, holds NPDES permit TX0139815, which discharges to Little River. EPA’s file records it issued April 8, 2021 and expiring April 8, 2026.

CITY OF TROY WWTP, Troy, Texas: Individual permit TX0139815, held by TROY, CITY OF; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued April 8, 2021, term to April 8, 2026; discharges to Little River.

Nitrogen, ammonia total [as N]: 3 limits, 86 violations of any kind, 86 effluent exceedances, latest July 31, 2026, largest 1,298% over the limit.
Solids, total suspended: 3 limits, 19 violations of any kind, 19 effluent exceedances, latest June 30, 2025, largest 273% over the limit.
BOD, carbonaceous [5 day, 20 C]: 3 limits, 13 violations of any kind, 13 effluent exceedances, latest June 30, 2025, largest 233% over the limit.
Flow, in conduit or thru treatment plant: 2 limits, 3 violations of any kind, 3 effluent exceedances, latest June 30, 2026, largest 97% over the limit.
Oxygen, dissolved [DO]: 1 limit, 3 violations of any kind, 3 effluent exceedances, latest October 31, 2023, largest 47% over the limit.
E. coli: 2 limits, 2 violations of any kind, 2 effluent exceedances, latest June 30, 2023, largest 507% over the limit.
pH: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Chlorine, total residual: 2 limits, 0 violations of any kind, 0 effluent exceedances.

September 25, 2026: Letter of Violation/ Warning Letter (State).
March 3, 2026: Permit Violations - Violation Specified in Comment (ST6).
March 3, 2026: Evaluation (S).
September 13, 2023: Permit Violations - Violation Specified in Comment (ST6).
October 26, 2022: Permit Violations - Violation Specified in Comment (ST6).

Texas holds 1,720 Publicly owned treatment works coverages of this permit type in EPA’s file; 1,504 were issued before TX0139815. TROY, CITY OF holds 2 permits in Texas.

Other permits held by TROY, CITY OF

CITY OF TROY WWTP, Troy: TX0058084, issued September 11, 2009

Coverages issued nearest TX0139815

April 1, 2021: NORTHSIDE WWTP, Brownsville, TX0006564, held by BROWNSVILLE NAVIGATION DISTRICT
April 1, 2021: CITY OF POTTSBORO WWTP, Pottsboro, TX0068756, held by POTTSBORO, CITY OF
April 8, 2021: TALCO WWTP, Talco, TX0021105, held by TALCO, CITY OF
April 8, 2021: HASKELL R STREET WWTP, El Paso, TX0026751, held by EL PASO WATER UTILITIES PUBLIC SERVICE BOARD
April 8, 2021: FORT BEND COUNTY MUD 190 WWTP, Fort Bend County, TX0129518, held by FORT BEND COUNTY MUD NO. 190
April 14, 2021: MILLER'S COVE WWTP, Winfield, TX0069710, held by MILLERS COVE, TOWN OF
April 14, 2021: PANTHER CREEK WWTP, Denton County, TX0123901, held by NORTH TEXAS MWD
April 16, 2021: PRAIRILAND ISD WWTP, Pattonville, TX0126136, held by PRAIRILAND ISD
April 19, 2021: CITY OF WOLF CITY WWTP, Wolfe City, TX0023558, held by WOLFE CITY, CITY OF
April 22, 2021: CITY OF YANTIS WWTP, Yantis, TX0083003, held by YANTIS, CITY OF

CITY OF TROY WWTP among its neighbors

EPA’s permit file holds 12 discharge permits in the Pecan Creek-Big Elm Creek subwatershed (HUC 120702040201), TX0139815 among them. Its county holds 350, 6 of them major permits; TX0139815 is a minor permit.

Other permits in the Pecan Creek-Big Elm Creek subwatershed (HUC 120702040201)

ANDERTON CASTINGS, Troy: TXR05GS34, minor permit, permit term to August 13, 2026
CITY OF TROY MS4, Troy: TXR040767, minor permit, permit term to August 14, 2029
CITY OF TROY WWTP, Troy: TX0058084, minor permit, discharging to KINGS BRANCH CREEK; BIG ELM CREEK, permit term to May 1, 2014
COLLEGE PARK, Troy: TXR1596PA, minor permit, discharging to BIG ELM CREEK, permit term to March 4, 2028
COLLEGE PARK PHASE II, Troy: TXR1544VN, minor permit, discharging to BIG ELM CREEK, permit term to March 4, 2028
COLLEGE PARK- SINGE FAMILY, Troy: TXR1511PS, minor permit, discharging to PECAN CREEK, permit term to March 4, 2028
COLLEGE PARK- VILLAGE AT ELM CREEK, Troy: TXR1518MN, minor permit, discharging to LITTLE RIVER, permit term to March 4, 2028
ENCLAVE OF TROY, Troy: TXR1514RT, minor permit, discharging to BIG ELM CREEK 1213A, permit term to March 4, 2028
FIRST NATIONAL BANK OF MOODY, Troy: TXR1522DO, minor permit, discharging to UNNAMED TRIBUTARY OF KING'S BRANCH, permit term to March 4, 2023
RIVER OAKS VILLAS, Troy: TXR1564WG, minor permit, discharging to BIG ELM CREEK, permit term to March 4, 2028

Identity

Facility as filed	CITY OF TROY WWTP
Permittee as filed	TROY, CITY OF
NPDES ID	TX0139815
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	April 8, 2021
Expiration date	April 8, 2026
Address	Troy, TX 76579
Receiving water	Little River
Subwatershed	Pecan Creek-Big Elm Creek (HUC 120702040201)

Effluent limits and exceedances

8Pollutants on file
8Under a numeric limit
6With 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, ammonia total [as N]	3	86	86	July 31, 2026	1,298% over the limit
Solids, total suspended	3	19	19	June 30, 2025	273% over the limit
BOD, carbonaceous [5 day, 20 C]	3	13	13	June 30, 2025	233% over the limit
Flow, in conduit or thru treatment plant	2	3	3	June 30, 2026	97% over the limit
Oxygen, dissolved [DO]	1	3	3	October 31, 2023	47% over the limit
E. coli	2	2	2	June 30, 2023	507% over the limit
pH	2	0	0
Chlorine, total residual	2	0	0

Inspections, violations and enforcement

3Single-event violations

Date	What EPA recorded	Agency
March 3, 2026	Permit Violations - Violation Specified in Comment	ST6
September 13, 2023	Permit Violations - Violation Specified in Comment	ST6
October 26, 2022	Permit Violations - Violation Specified in Comment	ST6

Inspections

Date	What EPA recorded	Agency
March 3, 2026	Evaluation	S

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

Date	What EPA recorded	Agency
September 25, 2026	Letter of Violation/ Warning Letter	State

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

This public-records page covers the Clean Water Act discharge permit NPDES TX0139815 for CITY OF TROY WWTP, held by TROY, CITY OF and discharging to Little River, with the permit listed as administratively continued and a Minor discharger class. The page lists 8 pollutants on file, 6 under a numeric limit, and 6 with an effluent exceedance, within the Pecan Creek-Big Elm Creek watershed (HUC 120702040201).