Clean Water Act discharge permit · NPDES TXR1559OS

RIVERSTONE UNIT G8, San Antonio, TX: NPDES TXR1559OS discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance

RIVERSTONE UNIT G8, held by CPS Energy, holds NPDES permit TXR1559OS, which discharges to Tributary Of Culebra Creek. EPA’s file records it issued October 18, 2023 and expiring March 4, 2028. 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.

What the register holds for RIVERSTONE UNIT G8: its NPDES ID, its permit type and status, its dates, its address in San Antonio, Texas, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR1559OS.

Identity

Facility as filed	RIVERSTONE UNIT G8
Permittee as filed	CPS Energy
NPDES ID	TXR1559OS
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Construction stormwater
Issued	October 18, 2023
Expiration date	March 4, 2028
Address	San Antonio, TX 78253
Receiving water	TRIBUTARY OF CULEBRA CREEK
Subwatershed	Upper Culebra Creek (HUC 121003020403)

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

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 TXR1559OS.

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 TXR1559OS.

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, TXR1559OS.

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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 TXR1559OS there.

Nearby on the register

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

RIVERSTONE UNIT G8 is one of 1,788 storm water construction permits on EPA's NPDES register in Bexar County, and it sits among 94 NPDES permits in the Upper Culebra Creek subwatershed, including itself. Of all 1,787 storm water construction permits in Bexar County, 5.9% were issued earlier than this one, while 0.2% of the 1,788 such permits in the county carry a violation on file; this permit has no pollutants under a numeric limit and no effluent exceedances on record.