Clean Water Act discharge permit · NPDES TX0057347

WHITE OAK WWTP, Houston, TX: NPDES TX0057347 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MajorDischarger class
50Pollutants under a numeric limit
6Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

WHITE OAK WWTP, held by HOUSTON, CITY OF, holds NPDES permit TX0057347, which discharges to White Oak Bayou. EPA’s file records it issued November 15, 2017 and expiring March 1, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	WHITE OAK WWTP
Permittee as filed	HOUSTON, CITY OF
NPDES ID	TX0057347
Permit status	Effective
Permit type	Individual permit
Discharger class	Major discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	November 15, 2017
Expiration date	March 1, 2022
Address	Houston, TX 77040
Receiving water	WHITE OAK BAYOU
Subwatershed	Cole Creek-Whiteoak Bayou (HUC 120401040302)
Program components on file	POTW, Pretreatment
SIC	4952 – Sewerage Systems

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

56Pollutants on file
50Under a numeric limit
14With 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
BOD, carbonaceous [5 day, 20 C]	3	31	28	January 31, 2025	99,999% over the limit
Nitrogen, ammonia total [as N]	6	11	8	January 31, 2025	100% over the limit
E. coli	10	8	8	September 30, 2025	99,999% over the limit
Chlorine, total residual	2	7	5	June 30, 2003	4,738% over the limit
Flow, in conduit or thru treatment plant	4	6	2	March 31, 2026	10% over the limit
Solids, total suspended	3	5	2	December 31, 2005	63% over the limit
Oxygen, dissolved [DO]	1	5	0
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia	0	4	0
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia	0	4	0
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia	0	4	0
pH	3	2	0
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia	0	2	0
LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia	0	2	0
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia	0	2	0
Arsenic, dry weight	5	0	0
Whole effluent toxicity - retest #1	5	0	0
Whole effluent toxicity - retest #2	5	0	0
Chromium, sludge, total, dry weight [as Cr]	5	0	0
IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelas	4	0	0
IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas	4	0	0
IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelas	4	0	0
IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas	4	0	0
Selenium, dry weight	3	0	0
Copper, dry weight	3	0	0
Cadmium, dry weight	3	0	0
Molybdenum, sludge, total, dry weight [as Mo]	3	0	0
Zinc, sludge, total, dry weight [as Zn]	3	0	0
Lead, sludge, total, dry weight [as Pb]	3	0	0
Nickel, sludge, total, dry weight [as Ni]	3	0	0
Mercury, sludge, total, dry weight [as Hg]	3	0	0
Nickel, total [as Ni]	2	0	0
Level of pathogen requirements achieved	2	0	0
Description of pathogen option used	2	0	0
Vector attraction reduction alternative used	2	0	0
IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia	2	0	0
IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia	2	0	0
IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia	2	0	0
IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia	2	0	0
Fecal coliform	1	0	0
Polychlorinated biphenyls [PCBs]	1	0	0
Toxicity characteristic leaching procedure	1	0	0
Annual whole sludge application rate	1	0	0
Ann. amt sludge disposed by other method	1	0	0
Annual amt of sludge incinerated	1	0	0
Annual sludge production, total	1	0	0
Annual amount of sludge land applied	1	0	0
Annual amt. sludge disposed surface unit	1	0	0
Annual amt sludge disposed in landfill	1	0	0
Annual amt sludge transported interstate	1	0	0
Unit w/liner/leachate collection system	1	0	0
Compliance w/part 258 sludge requirement	1	0	0
Boundary areas	1	0	0
Salmonella	1	0	0
Pollutant table from 503.13	1	0	0
LC50 Pass/Fail Static 24Hr Acute D. Pulex	1	0	0
LC50 Pass/Fail Static 24Hr Acute Pimephales promelas	1	0	0

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

16Single-event violations

Date	What EPA recorded	Agency
July 9, 2024	Wet-weather SSO discharge to waters of the U.S., not permit compliant, no endangerment	EP6
April 3, 2024	Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	EP6
March 25, 2024	Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangerment	EP6
November 9, 2022	Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	EP6
September 26, 2022	Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangerment	EP6
April 30, 2022	Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangerment	EP6
February 16, 2022	Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	EP6
December 12, 2021	Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	EP6
May 28, 2021	Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	EP6
November 13, 2020	Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	EP6
January 15, 2020	Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangerment	EP6
January 15, 2020	WW SSO - Discharge to Waters	EP6
November 1, 2019	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	EP6
September 21, 2019	WW SSO - Overflow to Dry Land or Building Backup	EP6
May 23, 2018	WW SSO - Discharge to Waters	EP6
March 22, 2018	Permit Violations - Violation Specified in Comment	ST6

Inspections

EPA’s inspection file holds no inspection for NPDES TX0057347.

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
June 10, 2026	Phone Call/ EMAIL	State

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 October 14, 2026.

This public-records page covers NPDES permit TX0057347 for the WHITE OAK WWTP in Houston, TX, held by HOUSTON, CITY OF, which discharges to White Oak Bayou in the Cole Creek-Whiteoak Bayou subwatershed (HUC 120401040302). The page lists the permit as Effective and a Major discharger, with 56 pollutants on file, 50 under a numeric limit, 14 with a violation of any kind, and 6 with an effluent exceedance.