Clean Water Act discharge permit · NPDES TX0143995
SAN JO UTILITIES WWTF, Willis, TX: NPDES TX0143995 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
SAN JO UTILITIES WWTF, held by SAN JO UTILITIES INC, holds NPDES permit TX0143995, which discharges to Lake Conroe. EPA’s file records it issued July 11, 2023 and expiring July 11, 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.
Identity
| Facility as filed | SAN JO UTILITIES WWTF |
|---|---|
| Permittee as filed | SAN JO UTILITIES INC |
| NPDES ID | TX0143995 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | July 11, 2023 |
| Expiration date | July 11, 2028 |
| Address | Willis, TX 77318 |
| Receiving water | Lake Conroe |
| Subwatershed | Hostetter Creek-Conroe Lake (HUC 120401010204) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 8Pollutants on file
- 8Under a numeric limit
- 3With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| E. coli | 2 | 3 | 1 | October 31, 2023 | 1,113% over the limit |
| Solids, total suspended | 3 | 1 | 1 | July 31, 2026 | 35% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 1 | 1 | January 31, 2024 | 18% over the limit |
| Nitrogen, ammonia total [as N] | 3 | 0 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 3 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES TX0143995.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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, TX0143995.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 TX0143995 there.
Nearby on the register
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- Every permit record in Willis, A to Z
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- Every permit record in Texas, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.