Clean Water Act discharge permit · NPDES TX0138908

HCMUD 559 WWTP, Houston, TX: NPDES TX0138908 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
8Pollutants under a numeric limit
2Pollutants with an effluent exceedance

HCMUD 559 WWTP, held by HARRIS COUNTY MUNICIPAL UTILITY DISTRICT 559, holds NPDES permit TX0138908, which discharges to Hcfcdd U1022800;Bear Crk;S Mayde Crk;Buffalo Bayou. EPA’s file records it issued August 30, 2019 and expiring August 30, 2024. 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	HCMUD 559 WWTP
Permittee as filed	HARRIS COUNTY MUNICIPAL UTILITY DISTRICT 559
NPDES ID	TX0138908
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Publicly owned treatment works
Issued	August 30, 2019
Expiration date	August 30, 2024
Address	Houston, TX 77433
Receiving water	HCFCDD U1022800;BEAR CRK;S MAYDE CRK;BUFFALO BAYOU
Subwatershed	Bear Creek (HUC 120401040202)
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

8Pollutants on file
8Under a numeric limit
3With a violation of any kind
2With 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	5	5	March 31, 2026	455% over the limit
Solids, total suspended	3	1	1	February 28, 2026	19% over the limit
E. coli	2	2	0
BOD, carbonaceous [5 day, 20 C]	3	0	0
pH	2	0	0
Flow, in conduit or thru treatment plant	2	0	0
Chlorine, total residual	2	0	0
Oxygen, dissolved [DO]	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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES TX0138908.

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.

Watch this permit

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID TX0138908 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers NPDES permit TX0138908 for the HCMUD 559 WWTP in Houston, TX, held by HARRIS COUNTY MUNICIPAL UTILITY DISTRICT 559, with the permit status shown as administratively continued and the permit listed as a Minor Discharger class. The page lists 2 pollutants under a numeric limit and 2 pollutants with an effluent exceedance, and it gives the permit's issue and expiration dates as recorded in EPA's file.