Clean Water Act discharge permit · NPDES AZC113140

TSMC P4, Phoenix, AZ: NPDES AZC113140 discharge permit, effluent exceedances, inspections, penalties

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

TSMC P4, held by Austin Commercial, Lp, holds NPDES permit AZC113140, which discharges to Deadman Wash. EPA’s file records it issued August 29, 2025 and expiring August 28, 2030.

TSMC P4, Phoenix, Arizona: Coverage under a general permit AZC113140, held by Austin Commercial, Lp; Effective; issued August 29, 2025, term to August 28, 2030, by ADEQ; discharges to Deadman Wash.

Other permits held by Austin Commercial, Lp

TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, Phoenix: AZC109427, issued May 15, 2025
TSMC P4, Phoenix: AZC110242, issued July 25, 2025
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, Phoenix: AZC113138, issued August 29, 2025
ACLP LAYDOWN YARD: AZC115307, issued March 17, 2026
TSMC SOUTH CAMPUS: AZC116442, issued June 3, 2026
ACLP LAYDOWN YARD - EAST: AZC116611, issued June 15, 2026
ACLP/TSMC NORTH LOT: AZC117260, issued July 28, 2026

TSMC P4 among its neighbors

EPA’s permit file holds 34 discharge permits in the Deadman Wash subwatershed (HUC 150701020804), AZC113140 among them.

Other permits in the Deadman Wash subwatershed (HUC 150701020804)

ACLP LAYDOWN YARD, Unknown: AZC115307, minor permit, discharging to Deadman Wash, permit term to August 28, 2030
ACLP LAYDOWN YARD - EAST, Unknown: AZC116611, minor permit, discharging to Deadman Wash, permit term to August 28, 2030
ACLP/TSMC NORTH LOT, Unknown: AZC117260, minor permit, discharging to Deadman Wash, permit term to August 28, 2030
AIR LIQUIDE ELECTRONICS US HYDROGEN PLANT, Unknown: AZCN92887, minor permit, permit term to June 30, 2025
ANTHEM COMMERCE PARK, Unknown: AZC116072, minor permit, discharging to Unnamed perennial or intermittent tributary, permit term to August 28, 2030
ANTHEM WATER CAMPUS WWTP, Anthem: AZ0025429, major permit, permit term to June 5, 2022
ANTHEM WATER CAMPUS WWTP, Anthem: AZI108151, minor permit, discharging to Unnamed ephemeral tributary, permit term to January 15, 2030
ANTHEM WATER CAMPUS WWTP, Anthem: AZMS80939, minor permit, permit term to December 30, 2024
APS WAFER SUBSTATION, Phoenix: AZC114189, minor permit, permit term to August 28, 2030
APS WAFER SUBSTATION, Phoenix: AZC114235, minor permit, permit term to August 28, 2030

What the register holds for TSMC P4: its NPDES ID, its permit type and status, its dates, its address in Phoenix, Arizona, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES AZC113140.

Identity

Facility as filed	TSMC P4
Permittee as filed	Austin Commercial, Lp
NPDES ID	AZC113140
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	August 29, 2025
Expiration date	August 28, 2030
Issuing agency	ADEQ
Address	Phoenix, AZ 85083
Receiving water	Deadman Wash
Subwatershed	Deadman Wash (HUC 150701020804)
Other EPA IDs (FRS)	RCRA handler AZR000526244; ICIS-AIR source AZMCA000000F041443

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES AZC113140.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES AZC113140.

Inspections

EPA’s inspection file holds no inspection for NPDES AZC113140.

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 AZC113140.

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Nearby on the register

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

The TSMC P4 discharge permit (NPDES ID AZC113140) is one of 311 general permit coverages in Phoenix, and 0.0% of those coverages have a violation on file. It also sits among 34 NPDES permits in the Deadman Wash subwatershed, this one included. Of all 311 Phoenix general permit coverages, 65.3% were issued earlier than this one, which took effect on August 29, 2025.