Clean Water Act discharge permit · NPDES TX0022268
CONROE SOUTHWEST REGIONAL WWTP, Conroe, TX: NPDES TX0022268 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 57Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
CONROE SOUTHWEST REGIONAL WWTP, held by CONROE,CITY OF, holds NPDES permit TX0022268, which discharges to W/Fk/San Jacinto River. EPA’s file records it issued December 21, 2018 and expiring December 21, 2023.
CONROE SOUTHWEST REGIONAL WWTP, Conroe, Texas: Individual permit TX0022268, held by CONROE,CITY OF; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued December 21, 2018, term to December 21, 2023; discharges to W/FK/SAN JACINTO RIVER.
- Solids, total suspended: 3 limits, 27 violations of any kind, 14 effluent exceedances, latest February 28, 2026, largest 358% over the limit.
- Nitrogen, ammonia total [as N]: 3 limits, 23 violations of any kind, 14 effluent exceedances, latest September 30, 2017, largest 4,116% over the limit.
- E. coli: 4 limits, 23 violations of any kind, 11 effluent exceedances, latest November 30, 2024, largest 99,999% over the limit.
- BOD, carbonaceous [5 day, 20 C]: 3 limits, 18 violations of any kind, 8 effluent exceedances, latest April 30, 2020, largest 164% over the limit.
- Chlorine, total residual: 2 limits, 13 violations of any kind, 7 effluent exceedances, latest June 30, 2019, largest 1,314% over the limit.
- Oxygen, dissolved [DO]: 1 limit, 6 violations of any kind, 3 effluent exceedances, latest May 31, 2016, largest 97% over the limit.
- Flow, in conduit or thru treatment plant: 4 limits, 15 violations of any kind, 2 effluent exceedances, latest August 31, 2017, largest 20% over the limit.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia: 4 limits, 14 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia: 4 limits, 12 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 4 limits, 12 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 4 limits, 12 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 4 limits, 12 violations of any kind, 0 effluent exceedances.
- Chromium, sludge, total, dry weight [as Cr]: 5 limits, 11 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas: 4 limits, 10 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas: 4 limits, 10 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 4 limits, 10 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas: 4 limits, 10 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas: 4 limits, 10 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas: 4 limits, 8 violations of any kind, 0 effluent exceedances.
- pH: 3 limits, 7 violations of any kind, 0 effluent exceedances.
- Chloride [as Cl]: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Copper, dry weight: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Arsenic, dry weight: 5 limits, 5 violations of any kind, 0 effluent exceedances.
- Level of pathogen requirements achieved: 2 limits, 5 violations of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #2: 8 limits, 4 violations of any kind, 0 effluent exceedances.
- Description of pathogen option used: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- Vector attraction reduction alternative used: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- Sulfate, total [as SO4]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Selenium, dry weight: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Cadmium, dry weight: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Solids, total dissolved: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Molybdenum, sludge, total, dry weight [as Mo]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Zinc, sludge, total, dry weight [as Zn]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Lead, sludge, total, dry weight [as Pb]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Nickel, sludge, total, dry weight [as Ni]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Mercury, sludge, total, dry weight [as Hg]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Pollutant table from 503.13: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute D. Pulex: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute Pimephales promelas: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Nickel, total [as Ni]: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Toxicity characteristic leaching procedure: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Ann. amt sludge disposed by other method: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amt of sludge incinerated: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual sludge production, total: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amount of sludge land applied: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amt. sludge disposed surface unit: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amt sludge disposed in landfill: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual amt sludge transported interstate: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Compliance w/part 258 sludge requirement: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Fecal coliform: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Polychlorinated biphenyls [PCBs]: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Unit w/liner/leachate collection system: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Boundary areas: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Salmonella: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Whole effluent toxicity - retest #1: 8 limits, 0 violations of any kind, 0 effluent exceedances.
- Annual whole sludge application rate: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- March 3, 2025: Permit Violations - Violation Specified in Comment (ST6).
- October 21, 2021: Permit Violations - Violation Specified in Comment (ST6).
- February 14, 2019: Permit Violations - Violation Specified in Comment (ST6).
- January 24, 2017: Permit Violations - Violation Specified in Comment (ST6).
Texas holds 1,720 Publicly owned treatment works coverages of this permit type in EPA’s file; 966 were issued before TX0022268.
Coverages issued nearest TX0022268
- December 11, 2018: OAK LANE WWTP, Vidor, TX0023795, held by ORANGE COUNTY WCID 1
- December 17, 2018: CITY OF LIPAN WWTP, Lipan, TX0111333, held by CITY OF LIPAN
- December 20, 2018: QUAIL VALLEY UD WWTP, Missouri City, TX0035220, held by QUAIL VALLEY UD
- December 20, 2018: MONTGOMERY COUNTY MUD 56 WWTP, Porter, TX0089672, held by MONTGOMERY CO MUD 56
- December 20, 2018: CITY OF MANVEL WWTP, Manvel, TX0118397, held by MANVEL, CITY OF
- December 21, 2018: NW HARRIS COUNTY MUD 9 WWTP, Harris County, TX0075221, held by NORTHWEST HARRIS COUNTY MUD 9
- January 2, 2019: GORMAN WWTP, Eastland County, TX0021806, held by GORMAN, CITY OF
- January 2, 2019: CROSBY MUD WWTP, Crosby, TX0054151, held by CROSBY MUD
- January 2, 2019: NORTH PARK PUD WWTP, Houston, TX0072567, held by NORTH PARK PUD
- January 2, 2019: ARROWHEAD RANCH ESTATES WWTP, Clay County, TX0101818, held by RED RIVER AUTHORITY OF TEXAS
CONROE SOUTHWEST REGIONAL WWTP among its neighbors
EPA’s permit file holds 3 discharge permits in the Post Oak Creek-Pedernales River subwatershed (HUC 120902060208), TX0022268 among them. Its county holds 1,439, 16 of them major permits; TX0022268 is a major permit.
Other permits in the Post Oak Creek-Pedernales River subwatershed (HUC 120902060208)
- JOHNSON CITY CBP, Johnson City: TXG113025, minor permit, permit term to November 6, 2026
- JOHNSON CITY HMA, Johnson City: TXR05GV64, minor permit, permit term to August 13, 2026
Identity
| Facility as filed | CONROE SOUTHWEST REGIONAL WWTP |
|---|---|
| Permittee as filed | CONROE,CITY OF |
| NPDES ID | TX0022268 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 21, 2018 |
| Expiration date | December 21, 2023 |
| Address | Conroe, TX 77304 |
| Receiving water | W/FK/SAN JACINTO RIVER |
| Subwatershed | Post Oak Creek-Pedernales River (HUC 120902060208) |
| Program components on file | POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 57Pollutants on file
- 57Under a numeric limit
- 55With 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 | 27 | 14 | February 28, 2026 | 358% over the limit |
| Nitrogen, ammonia total [as N] | 3 | 23 | 14 | September 30, 2017 | 4,116% over the limit |
| E. coli | 4 | 23 | 11 | November 30, 2024 | 99,999% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 3 | 18 | 8 | April 30, 2020 | 164% over the limit |
| Chlorine, total residual | 2 | 13 | 7 | June 30, 2019 | 1,314% over the limit |
| Oxygen, dissolved [DO] | 1 | 6 | 3 | May 31, 2016 | 97% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 15 | 2 | August 31, 2017 | 20% over the limit |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 14 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 14 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 12 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 12 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 12 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 4 | 12 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 11 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 4 | 10 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 4 | 10 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 4 | 10 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 4 | 10 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 4 | 10 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 4 | 8 | 0 | ||
| pH | 3 | 7 | 0 | ||
| Chloride [as Cl] | 3 | 6 | 0 | ||
| Copper, dry weight | 3 | 6 | 0 | ||
| Arsenic, dry weight | 5 | 5 | 0 | ||
| Level of pathogen requirements achieved | 2 | 5 | 0 | ||
| Whole effluent toxicity - retest #2 | 8 | 4 | 0 | ||
| Description of pathogen option used | 2 | 4 | 0 | ||
| Vector attraction reduction alternative used | 2 | 4 | 0 | ||
| Sulfate, total [as SO4] | 3 | 3 | 0 | ||
| Selenium, dry weight | 3 | 3 | 0 | ||
| Cadmium, dry weight | 3 | 3 | 0 | ||
| Solids, total dissolved | 3 | 3 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 3 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 3 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 3 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 3 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 3 | 0 | ||
| Pollutant table from 503.13 | 1 | 3 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 3 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 3 | 0 | ||
| Nickel, total [as Ni] | 2 | 2 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 2 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 2 | 0 | ||
| Annual amt of sludge incinerated | 1 | 2 | 0 | ||
| Annual sludge production, total | 1 | 2 | 0 | ||
| Annual amount of sludge land applied | 1 | 2 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 2 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 2 | 0 | ||
| Annual amt sludge transported interstate | 1 | 2 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 2 | 0 | ||
| Fecal coliform | 1 | 1 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 1 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 1 | 0 | ||
| Boundary areas | 1 | 1 | 0 | ||
| Salmonella | 1 | 1 | 0 | ||
| Whole effluent toxicity - retest #1 | 8 | 0 | 0 | ||
| Annual whole sludge application rate | 1 | 0 | 0 |
Inspections, violations and enforcement
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 3, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| October 21, 2021 | Permit Violations - Violation Specified in Comment | ST6 |
| February 14, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
| January 24, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES TX0022268.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES TX0022268.
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, TX0022268.
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
Nearby on the register
- Discharge permits in Conroe
- Every permit record in Conroe, A to Z
- Discharge permits in Texas
- Every permit record in Texas, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.