Clean Water Act discharge permit · NPDES TX0022080
MONTGOMERY COUNTY MUD 8 WWTP, Conroe, TX: NPDES TX0022080 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 39Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
- 2Inspections on file
- 0Formal enforcement actions
MONTGOMERY COUNTY MUD 8 WWTP, held by MONTGOMERY CO MUD 8, holds NPDES permit TX0022080, which discharges to Lake Conroe. EPA’s file records it issued January 12, 2018 and expiring June 1, 2022.
MONTGOMERY COUNTY MUD 8 WWTP, Conroe, Texas: Individual permit TX0022080, held by MONTGOMERY CO MUD 8; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued January 12, 2018, term to June 1, 2022; discharges to LAKE CONROE.
- E. coli: 4 limits, 12 violations of any kind, 10 effluent exceedances, latest June 30, 2026, largest 99,999% over the limit.
- Flow, in conduit or thru treatment plant: 6 limits, 113 violations of any kind, 8 effluent exceedances, latest May 31, 2024, largest 43% over the limit.
- Phosphorus, total [as P]: 3 limits, 32 violations of any kind, 8 effluent exceedances, latest July 31, 2023, largest 182% over the limit.
- BOD, carbonaceous [5 day, 20 C]: 6 limits, 72 violations of any kind, 6 effluent exceedances, latest September 30, 2024, largest 99,999% over the limit.
- Oxygen, dissolved [DO]: 1 limit, 41 violations of any kind, 6 effluent exceedances, latest June 30, 2026, largest 38% over the limit.
- Nitrogen, ammonia total [as N]: 6 limits, 65 violations of any kind, 5 effluent exceedances, latest July 31, 2014, largest 124% over the limit.
- Solids, total suspended: 6 limits, 114 violations of any kind, 3 effluent exceedances, latest February 28, 2015, largest 57% over the limit.
- Chlorine, total residual: 4 limits, 94 violations of any kind, 2 effluent exceedances, latest November 30, 2024, largest 3,870% over the limit.
- pH: 5 limits, 77 violations of any kind, 1 effluent exceedance, latest September 30, 2024.
- BOD, 5-day, 20 deg. C: 0 limits, 45 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia: 0 limits, 12 violations of any kind, 0 effluent exceedances.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas: 0 limits, 12 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 0 limits, 12 violations of any kind, 0 effluent exceedances.
- NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas: 0 limits, 12 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 0 limits, 12 violations of any kind, 0 effluent exceedances.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 0 limits, 12 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 0 limits, 12 violations of any kind, 0 effluent exceedances.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas: 0 limits, 12 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia: 0 limits, 12 violations of any kind, 0 effluent exceedances.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas: 0 limits, 12 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia: 0 limits, 12 violations of any kind, 0 effluent exceedances.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas: 0 limits, 12 violations of any kind, 0 effluent exceedances.
- Arsenic, dry weight: 5 limits, 10 violations of any kind, 0 effluent exceedances.
- Chromium, sludge, total, dry weight [as Cr]: 5 limits, 10 violations of any kind, 0 effluent exceedances.
- Selenium, dry weight: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Copper, dry weight: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Cadmium, dry weight: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Molybdenum, sludge, total, dry weight [as Mo]: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Zinc, sludge, total, dry weight [as Zn]: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Lead, sludge, total, dry weight [as Pb]: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Nickel, sludge, total, dry weight [as Ni]: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Mercury, sludge, total, dry weight [as Hg]: 3 limits, 6 violations of any kind, 0 effluent exceedances.
- Nickel, total [as Ni]: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- Level of pathogen requirements achieved: 2 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.
- Polychlorinated biphenyls [PCBs]: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Toxicity characteristic leaching procedure: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Annual amt of sludge incinerated: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Annual amount of sludge land applied: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Annual amt. sludge disposed surface unit: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Annual amt sludge transported interstate: 1 limit, 4 violations of any kind, 0 effluent exceedances.
- Ann. amt sludge disposed by other method: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Annual sludge production, total: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Annual amt sludge disposed in landfill: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute D. Pulex: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- LC50 Pass/Fail Static 24Hr Acute Pimephales promelas: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Fecal coliform: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Unit w/liner/leachate collection system: 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.
- Boundary areas: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Salmonella: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Pollutant table from 503.13: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Annual whole sludge application rate: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- February 18, 2026: Permit Violations - Violation Specified in Comment (ST6).
- February 18, 2026: Evaluation (S).
- February 2, 2026: Focused (S).
- December 14, 2022: Permit Violations - Violation Specified in Comment (ST6).
Texas holds 1,720 Publicly owned treatment works coverages of this permit type in EPA’s file; 654 were issued before TX0022080.
Coverages issued nearest TX0022080
- January 3, 2018: FAIRGREEN WWTP, Houston, TX0071382, held by SUNBELT FRESH WSD
- January 5, 2018: EDCOUCH WWTF, Edcouch, TX0057614, held by EDCOUCH, CITY OF
- January 5, 2018: BOERNE WWT AND RECYCLING CENTER, Boerne, TX0131831, held by BOERNE, CITY OF
- January 10, 2018: CITY OF JUNCTION WWTP, Junction, TX0021075, held by JUNCTION, CITY OF
- January 10, 2018: HARRIS COUNTY MUNICIPAL UTILITY DISTRICT NO.33 WWTP, Houston, TX0074136, held by HARRIS COUNTY MUD NO 33
- January 19, 2018: BEECHNUT MUD, Houston, TX0084425
- January 24, 2018: SOUTHWEST WWTP, Houston, TX0062995, held by CITY OF HOUSTON
- January 26, 2018: CITY OF BELLAIRE WWTP, Bellaire, TX0020613, held by CITY OF BELLAIRE
- January 26, 2018: HARRIS COUNTY MUD 5 WWTP, Houston, TX0026344, held by HARRIS COUNTY MUD 5
- January 26, 2018: HARRIS COUNTY MUD 189 WWTP, Houston, TX0083712, held by HARRIS COUNTY MUD NO 189
MONTGOMERY COUNTY MUD 8 WWTP among its neighbors
EPA’s permit file holds 76 discharge permits in the Town Creek-Conroe Lake subwatershed (HUC 120401010206), TX0022080 among them. Its county holds 1,439, 16 of them major permits; TX0022080 is a minor permit.
Other permits in the Town Creek-Conroe Lake subwatershed (HUC 120401010206)
- 10533 W FM 1097, Willis: TXR1568MO, minor permit, discharging to LAKE CONROE, permit term to March 4, 2028
- 10918 DECATUR STREET, Willis: TXR1513ZB, minor permit, discharging to LAKE CONROE, permit term to March 4, 2028
- ADF EXCAVATION PIT, Willis: TXR05DX64, minor permit, permit term to August 13, 2021
- BRIARLEY, Montgomery: TXR1579UB, minor permit, discharging to THE SAN JACINTO RIVER BASIN, permit term to March 4, 2028
- CAPE CONROE, Montgomery: TXR1556XM, minor permit, discharging to LAKE CONROE, permit term to March 4, 2028
- CHAPEL BEND, Montgomery: TXR1565ME, minor permit, discharging to CARWILE CREEK, permit term to March 4, 2028
- CHAPEL RUN, Conroe: TXR1597XN, minor permit, discharging to WEST FORK SAN JACINTO RIVER, permit term to March 4, 2028
- DEL LAGO ESTATES WWTP, Montgomery: TX0104060, minor permit, discharging to LAKE CONROE, permit term to June 1, 2022
- DEL LAGO WWTF, Montgomery: TX0089630, minor permit, discharging to LAKE CONROE, permit term to June 1, 2022
- DETENTION TO SERVE TRIB 4X-1 AT THE WOODLANDS HILL, Willis: TXR1560PF, minor permit, discharging to STEWARTS CREEK, permit term to March 4, 2028
Identity
| Facility as filed | MONTGOMERY COUNTY MUD 8 WWTP |
|---|---|
| Permittee as filed | MONTGOMERY CO MUD 8 |
| NPDES ID | TX0022080 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | January 12, 2018 |
| Expiration date | June 1, 2022 |
| Address | Conroe, TX 77356 |
| Receiving water | LAKE CONROE |
| Subwatershed | Town Creek-Conroe Lake (HUC 120401010206) |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 54Pollutants on file
- 39Under a numeric limit
- 53With a violation of any kind
- 9With 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 | 4 | 12 | 10 | June 30, 2026 | 99,999% over the limit |
| Flow, in conduit or thru treatment plant | 6 | 113 | 8 | May 31, 2024 | 43% over the limit |
| Phosphorus, total [as P] | 3 | 32 | 8 | July 31, 2023 | 182% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 6 | 72 | 6 | September 30, 2024 | 99,999% over the limit |
| Oxygen, dissolved [DO] | 1 | 41 | 6 | June 30, 2026 | 38% over the limit |
| Nitrogen, ammonia total [as N] | 6 | 65 | 5 | July 31, 2014 | 124% over the limit |
| Solids, total suspended | 6 | 114 | 3 | February 28, 2015 | 57% over the limit |
| Chlorine, total residual | 4 | 94 | 2 | November 30, 2024 | 3,870% over the limit |
| pH | 5 | 77 | 1 | September 30, 2024 | |
| BOD, 5-day, 20 deg. C | 0 | 45 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 12 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 0 | 12 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 12 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 0 | 12 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 12 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 0 | 12 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 12 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 0 | 12 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 12 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 0 | 12 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 12 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 0 | 12 | 0 | ||
| Arsenic, dry weight | 5 | 10 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 10 | 0 | ||
| Selenium, dry weight | 3 | 6 | 0 | ||
| Copper, dry weight | 3 | 6 | 0 | ||
| Cadmium, dry weight | 3 | 6 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 6 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 6 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 6 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 6 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 6 | 0 | ||
| Nickel, total [as Ni] | 2 | 4 | 0 | ||
| Level of pathogen requirements achieved | 2 | 4 | 0 | ||
| Description of pathogen option used | 2 | 4 | 0 | ||
| Vector attraction reduction alternative used | 2 | 4 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 4 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 4 | 0 | ||
| Annual amt of sludge incinerated | 1 | 4 | 0 | ||
| Annual amount of sludge land applied | 1 | 4 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 4 | 0 | ||
| Annual amt sludge transported interstate | 1 | 4 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 3 | 0 | ||
| Annual sludge production, total | 1 | 3 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 3 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 0 | 3 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 0 | 3 | 0 | ||
| Fecal coliform | 1 | 2 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 2 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 2 | 0 | ||
| Boundary areas | 1 | 2 | 0 | ||
| Salmonella | 1 | 2 | 0 | ||
| Pollutant table from 503.13 | 1 | 2 | 0 | ||
| Annual whole sludge application rate | 1 | 0 | 0 |
Inspections, violations and enforcement
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 18, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| December 14, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| February 18, 2026 | Evaluation | S |
| February 2, 2026 | Focused | S |
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 TX0022080.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.