Clean Water Act discharge permit · NPDES TX0020567
AVALON WWTP, Ellis County, TX: NPDES TX0020567 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 38Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
AVALON WWTP, held by AVALON WATER AND SEWER SERVICE CORPORATION, holds NPDES permit TX0020567, which discharges to Unnamed Trib, Soil Con Ser Dam 93;Unnamed Trib Ch. EPA’s file records it issued December 13, 2016 and expiring December 1, 2021. 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 | AVALON WWTP |
|---|---|
| Permittee as filed | AVALON WATER AND SEWER SERVICE CORPORATION |
| NPDES ID | TX0020567 |
| 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 | December 13, 2016 |
| Expiration date | December 1, 2021 |
| Address | Ellis County, TX 76623 |
| Receiving water | UNNAMED TRIB, SOIL CON SER DAM 93;UNNAMED TRIB CH |
| Subwatershed | Houston Creek-Chambers Creek (HUC 120301090203) |
| 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
- 7With 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 | 139 | 56 | March 31, 2023 | 438% over the limit |
| Oxygen, dissolved [DO] | 1 | 56 | 26 | December 31, 2025 | 89% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 73 | 23 | March 31, 2010 | 211% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 109 | 17 | December 31, 2010 | 137% over the limit |
| Chlorine, total residual | 2 | 75 | 17 | January 31, 2025 | 100% over the limit |
| pH | 3 | 70 | 6 | March 31, 2024 | |
| E. coli | 2 | 11 | 5 | November 30, 2025 | 334% over the limit |
| Nitrogen, ammonia total [as N] | 3 | 60 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 23 | 0 | ||
| Arsenic, dry weight | 5 | 20 | 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 | 9 | 0 | ||
| Description of pathogen option used | 2 | 9 | 0 | ||
| Vector attraction reduction alternative used | 2 | 9 | 0 | ||
| Nickel, total [as Ni] | 2 | 8 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 6 | 0 | ||
| Pollutant table from 503.13 | 1 | 5 | 0 | ||
| Fecal coliform | 1 | 4 | 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 sludge disposed in landfill | 1 | 4 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 4 | 0 | ||
| Boundary areas | 1 | 4 | 0 | ||
| Salmonella | 1 | 4 | 0 | ||
| Annual amt of sludge incinerated | 1 | 3 | 0 | ||
| Annual sludge production, total | 1 | 3 | 0 | ||
| Annual amount of sludge land applied | 1 | 3 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 3 | 0 | ||
| Annual amt sludge transported interstate | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 21, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| January 25, 2017 | 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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Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.