Clean Water Act discharge permit · NPDES TX0118770
WALNUT CREEK MOBILE HOME PARK WWTF, Johnson County, TX: NPDES TX0118770 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 37Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
WALNUT CREEK MOBILE HOME PARK WWTF, held by STONETOWN WALNUT CREEK LLC, holds NPDES permit TX0118770, which discharges to Unnamed Trib Walnut Crk; Joe Pool Lake. EPA’s file records it issued October 10, 2016 and expiring September 1, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | WALNUT CREEK MOBILE HOME PARK WWTF |
|---|---|
| Permittee as filed | STONETOWN WALNUT CREEK LLC |
| NPDES ID | TX0118770 |
| 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 | October 10, 2016 |
| Expiration date | September 1, 2021 |
| Address | Johnson County, TX 76009 |
| Receiving water | UNNAMED TRIB WALNUT CRK; JOE POOL LAKE |
| Subwatershed | King Branch-Walnut Creek (HUC 120301020604) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 37Pollutants on file
- 37Under a numeric limit
- 36With 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 | 246 | 66 | June 30, 2026 | 477% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 218 | 41 | April 30, 2023 | 168% over the limit |
| Oxygen, dissolved [DO] | 1 | 79 | 19 | August 31, 2024 | 60% over the limit |
| E. coli | 2 | 71 | 17 | March 31, 2025 | 99,999% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 129 | 5 | January 31, 2024 | 269% over the limit |
| Chlorine, total residual | 2 | 127 | 3 | January 31, 2025 | 500% over the limit |
| pH | 3 | 128 | 0 | ||
| Arsenic, dry weight | 5 | 25 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 25 | 0 | ||
| Selenium, dry weight | 3 | 15 | 0 | ||
| Copper, dry weight | 3 | 15 | 0 | ||
| Cadmium, dry weight | 3 | 15 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 15 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 15 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 15 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 15 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 15 | 0 | ||
| Nickel, total [as Ni] | 2 | 10 | 0 | ||
| Level of pathogen requirements achieved | 2 | 10 | 0 | ||
| Description of pathogen option used | 2 | 10 | 0 | ||
| Vector attraction reduction alternative used | 2 | 10 | 0 | ||
| Annual sludge production, total | 1 | 9 | 0 | ||
| Annual amount of sludge land applied | 1 | 9 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 8 | 0 | ||
| Annual amt of sludge incinerated | 1 | 8 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 8 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 8 | 0 | ||
| Annual amt sludge transported interstate | 1 | 8 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 6 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 6 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 6 | 0 | ||
| Fecal coliform | 1 | 5 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 5 | 0 | ||
| Boundary areas | 1 | 5 | 0 | ||
| Salmonella | 1 | 5 | 0 | ||
| Pollutant table from 503.13 | 1 | 5 | 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
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 31, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| March 4, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| May 15, 2020 | Permit Violations - Violation Specified in Comment | ST6 |
| April 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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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.