Clean Water Act discharge permit · NPDES TXR05GA12

HAHN & CLAY, Houston, TX: NPDES TXR05GA12 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
16Pollutants under a numeric limit
1Pollutants with an effluent exceedance

HAHN & CLAY, held by hahn and Clay, holds NPDES permit TXR05GA12. EPA’s file records it issued March 20, 2023 and expiring August 13, 2026. 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 filed	HAHN & CLAY
Permittee as filed	hahn and Clay
NPDES ID	TXR05GA12
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Industrial stormwater
Issued	March 20, 2023
Expiration date	August 13, 2026
Address	Houston, TX 77020
Receiving water impaired	303(D) Listed
Subwatershed	Vince Bayou-Buffalo Bayou (HUC 120401040703)

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

Effluent limits and exceedances

16Pollutants on file
16Under a numeric limit
1With a violation of any kind
1With 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
Zinc, total [as Zn]	4	1	1	December 31, 2023	63% over the limit
Solids, total suspended	2	0	0
Nitrite + Nitrate total [as N]	2	0	0
Arsenic, total [as As]	2	0	0
Barium, total [as Ba]	2	0	0
Cadmium, total [as Cd]	2	0	0
Chromium, total [as Cr]	2	0	0
Copper, total [as Cu]	2	0	0
Iron, total [as Fe]	2	0	0
Lead, total [as Pb]	2	0	0
Manganese, total [as Mn]	2	0	0
Nickel, total [as Ni]	2	0	0
Silver, total [as Ag]	2	0	0
Aluminum, total [as Al]	2	0	0
Selenium, total [as Se]	2	0	0
Mercury, total [as Hg]	2	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 TXR05GA12.

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

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, TXR05GA12.

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How we handle your data → Privacy

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 TXR05GA12 there.

Nearby on the register

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