Clean Water Act discharge permit · NPDES TXR1507OL

TSTC-WACO ANNEX, Waco, TX: NPDES TXR1507OL discharge permit, effluent exceedances, inspections, penalties

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

TSTC-WACO ANNEX, held by Mazanec Construction Company, Inc., holds NPDES permit TXR1507OL, which discharges to North Flat Creek. EPA’s file records it issued September 21, 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 TSTC-WACO ANNEX: its NPDES ID, its permit type and status, its dates, its address in Waco, Texas, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES TXR1507OL.

Identity

Facility as filed	TSTC-WACO ANNEX
Permittee as filed	Mazanec Construction Company, Inc.
NPDES ID	TXR1507OL
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	September 21, 2023
Expiration date	March 4, 2028
Address	Waco, TX 76712
Receiving water	NORTH FLAT CREEK
Subwatershed	Flat Creek (HUC 120602020802)

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 TXR1507OL.

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 TXR1507OL.

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, TXR1507OL.

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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 TXR1507OL there.

Nearby on the register

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

The TSTC-WACO ANNEX storm water construction permit, held by Mazanec Construction Company, Inc. in Waco, is one of 194 storm water construction permits in McLennan County on EPA's NPDES register. Only 0.5% of those 194 permits in McLennan County have a violation on file, and this permit has none of the records for pollutants under a numeric limit or effluent exceedances. The permit sits within the Flat Creek subwatershed, where 62 NPDES permits, this one included, are registered.