Clean Water Act discharge permit · NPDES TX0126306
IS ZEN CENTER WWTP, Montgomery County, TX: NPDES TX0126306 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 38Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
IS ZEN CENTER WWTP, held by IS ZEN CENTER, holds NPDES permit TX0126306, which discharges to Unnamed Ditch; Underground Culvert;Unnamed Trib. EPA’s file records it issued March 15, 2018 and expiring March 1, 2023. 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 | IS ZEN CENTER WWTP |
|---|---|
| Permittee as filed | IS ZEN CENTER |
| NPDES ID | TX0126306 |
| 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 |
| Issued | March 15, 2018 |
| Expiration date | March 1, 2023 |
| Address | Montgomery County, TX 77354 |
| Receiving water | UNNAMED DITCH; UNDERGROUND CULVERT;UNNAMED TRIB |
| Subwatershed | Dry Creek-Spring Creek (HUC 120401020209) |
| 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
- 38Pollutants on file
- 38Under a numeric limit
- 37With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 3 | 35 | 17 | February 29, 2024 | 183% over the limit |
| Nitrogen, ammonia total [as N] | 3 | 34 | 16 | November 30, 2025 | 220% over the limit |
| Chlorine, total residual | 2 | 23 | 11 | January 31, 2019 | 100% over the limit |
| pH | 3 | 23 | 8 | November 30, 2010 | |
| E. coli | 2 | 10 | 6 | December 31, 2019 | 4,505% over the limit |
| Oxygen, dissolved [DO] | 1 | 8 | 2 | August 31, 2014 | 50% over the limit |
| Chromium, sludge, total, dry weight [as Cr] | 5 | 21 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 21 | 0 | ||
| Arsenic, dry weight | 5 | 18 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 3 | 18 | 0 | ||
| Selenium, dry weight | 3 | 12 | 0 | ||
| Copper, dry weight | 3 | 12 | 0 | ||
| Cadmium, dry weight | 3 | 12 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 12 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 12 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 12 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 12 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 12 | 0 | ||
| Level of pathogen requirements achieved | 2 | 8 | 0 | ||
| Description of pathogen option used | 2 | 8 | 0 | ||
| Vector attraction reduction alternative used | 2 | 8 | 0 | ||
| Nickel, total [as Ni] | 2 | 6 | 0 | ||
| Pollutant table from 503.13 | 1 | 5 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 4 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 4 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 4 | 0 | ||
| Annual amt of sludge incinerated | 1 | 4 | 0 | ||
| Annual sludge production, total | 1 | 4 | 0 | ||
| Annual amount of sludge land applied | 1 | 4 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 4 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 4 | 0 | ||
| Annual amt sludge transported interstate | 1 | 4 | 0 | ||
| Fecal coliform | 1 | 3 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 3 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 3 | 0 | ||
| Boundary areas | 1 | 3 | 0 | ||
| Salmonella | 1 | 3 | 0 | ||
| Annual whole sludge application rate | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 4, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
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.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.