NPDES TX0024759 · Clean Water Act
SOUTHERN MONTGOMERY CO MUD WWTP, Montgomery County, TX: NPDES TX0024759 discharge permit, effluent exceedances, inspections, penalties
SOUTHERN MONTGOMERY CO MUD WWTP, Montgomery County, Texas: Individual permit TX0024759, held by SOUTHERN MONTGOMERY COUNTY MUD; Publicly owned treatment works; Administratively continued; issued April 9, 2018, term to April 9, 2023; discharges to MONTGOMERY CO DRAINAGE DISTRICT 6.
10 of the 54 pollutants listed for NPDES TX0024759 have no violation or effluent exceedance.
- E. coli: 2 limits, 18 violations of any kind, 15 effluent exceedances, latest May 31, 2026, largest 2,320% over the limit.
- Flow, in conduit or thru treatment plant: 4 limits, 22 violations of any kind, 5 effluent exceedances, latest May 31, 2024, largest 16% over the limit.
- Chlorine, total residual: 2 limits, 13 violations of any kind, 2 effluent exceedances, latest February 28, 2021, largest 3,900% over the limit.
- Nitrogen, ammonia total [as N]: 3 limits, 16 violations of any kind.
- Solids, total suspended: 3 limits, 12 violations of any kind.
- BOD, carbonaceous [5 day, 20 C]: 3 limits, 12 violations of any kind.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 12 violations of any kind.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 12 violations of any kind.
- pH: 3 limits, 10 violations of any kind.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas: 2 limits, 10 violations of any kind.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 10 violations of any kind.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 10 violations of any kind.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 8 violations of any kind.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 8 violations of any kind.
- NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 8 violations of any kind.
- NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 8 violations of any kind.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 8 violations of any kind.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 8 violations of any kind.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 8 violations of any kind.
- Arsenic, dry weight: 5 limits, 5 violations of any kind.
- Chromium, sludge, total, dry weight [as Cr]: 5 limits, 5 violations of any kind.
- Oxygen, dissolved [DO]: 1 limit, 5 violations of any kind.
- Selenium, dry weight: 3 limits, 3 violations of any kind.
- Copper, dry weight: 3 limits, 3 violations of any kind.
- Cadmium, dry weight: 3 limits, 3 violations of any kind.
- Molybdenum, sludge, total, dry weight [as Mo]: 3 limits, 3 violations of any kind.
- Zinc, sludge, total, dry weight [as Zn]: 3 limits, 3 violations of any kind.
- Lead, sludge, total, dry weight [as Pb]: 3 limits, 3 violations of any kind.
- Nickel, sludge, total, dry weight [as Ni]: 3 limits, 3 violations of any kind.
- Mercury, sludge, total, dry weight [as Hg]: 3 limits, 3 violations of any kind.
- Nickel, total [as Ni]: 2 limits, 2 violations of any kind.
- Level of pathogen requirements achieved: 2 limits, 2 violations of any kind.
- Description of pathogen option used: 2 limits, 2 violations of any kind.
- Vector attraction reduction alternative used: 2 limits, 2 violations of any kind.
- Polychlorinated biphenyls [PCBs]: 1 limit, 2 violations of any kind.
- Compliance w/part 258 sludge requirement: 1 limit, 2 violations of any kind.
- LC50 Pass/Fail Static 24Hr Acute D. Pulex: 1 limit, 2 violations of any kind.
- LC50 Pass/Fail Static 24Hr Acute Pimephales promelas: 1 limit, 2 violations of any kind.
- Fecal coliform: 1 limit, 1 violation of any kind.
- Toxicity characteristic leaching procedure: 1 limit, 1 violation of any kind.
- Unit w/liner/leachate collection system: 1 limit, 1 violation of any kind.
- Boundary areas: 1 limit, 1 violation of any kind.
- Salmonella: 1 limit, 1 violation of any kind.
- Pollutant table from 503.13: 1 limit, 1 violation of any kind.
- Whole effluent toxicity - retest #1: 3 limits.
- Whole effluent toxicity - retest #2: 3 limits.
- Annual whole sludge application rate: 1 limit.
- Ann. amt sludge disposed by other method: 1 limit.
- Annual amt of sludge incinerated: 1 limit.
- Annual sludge production, total: 1 limit.
- Annual amount of sludge land applied: 1 limit.
- Annual amt. sludge disposed surface unit: 1 limit.
- Annual amt sludge disposed in landfill: 1 limit.
- Annual amt sludge transported interstate: 1 limit.
- July 7, 2026: State CWA Penalty AO (State), $28,125 state or local penalty.
- September 25, 2025: Permit Violations - Violation Specified in Comment (ST6).
- July 17, 2019: Permit Violations - Violation Specified in Comment (ST6).
Texas holds 1,720 Publicly owned treatment works coverages of this permit type in EPA’s file; 739 were issued before TX0024759.
Coverages issued nearest TX0024759
- 2018-03-29: CITY OF BELLEVUE, Bellevue: TX0027171
- 2018-03-29: LAKE FOREST REGIONAL WWTP, Houston: TX0046833, held by LAKE FOREST PLANT ADVISORY COUNCIL
- 2018-03-29: CHARTERWOOD MUD WWTP, Houston: TX0046841, held by CHARTERWOOD MUD
- 2018-04-09: HARRIS COUNTY WCID 92 WTP, Spring: TX0020974, held by HARRIS COUNTY WCID 92
- 2018-04-09: CROWELL WWTP, Crowell: TX0023370, held by CITY OF CROWELL
- 2018-04-09: CITY OF GALENA PARK WWTP 1, Galena Park: TX0057185, held by GALENA PARK, CITY OF
- 2018-04-09: NORTH LAREDO WWTP, Laredo: TX0057801, held by CITY OF LAREDO
- 2018-04-09: HARRIS COUNTY MUD NO 249 WWTP, Houston: TX0116068, held by HARRIS COUNTY MUD 249
- 2018-04-09: HARRIS COUNTY MUD 374, Houston: TX0124974
- 2018-04-09: CITY OF LINDEN JIMS BAYOU WWTP, Linden: TX0135984, held by CITY OF LINDEN
SOUTHERN MONTGOMERY CO MUD WWTP among its neighbors
67 discharge permits are in the Panther Branch-Spring Creek subwatershed (HUC 120401020212); TX0024759 is one. Its county: 1,439, 16 major; TX0024759 is major permit.
Other permits in the Panther Branch-Spring Creek subwatershed (HUC 120401020212)
- 1725 HUGHES LANDING EAST EXTERIOR RENOVATION, The Woodlands: TXR1503WD, minor, term to 2028-03-04
- ALAN PHELPS DETENTION POND, Spring: TXR1530YV, minor, term to 2028-03-04
- ANCHOR HEALTH HOUSTON, Spring: TXR1549YB, minor, term to 2028-03-04
- AUDUBON HERON RUN PH 1, Pinehurst: TXR1579OX, minor, term to 2028-03-04
- AUDUBON HERON RUN PHASE 4, Magnolia: TXR1524WC, minor, term to 2028-03-04
- BAHR WWTP, The Woodlands: TX0145769
- BRANTLEY RESIDENCE, Montogomery: TXR1582US, minor, term to 2028-03-04
- CATHEDRAL SHORES DRIVE EXT, Spring: TXR1529MA, minor, term to 2028-03-04
- CEDARSTONE WWTP, Woodland Lake: TX0090000, minor, term to 2018-03-01
- COLTON SECTION 6, Magnolia: TXR1505VK, minor, term to 2028-03-04
Identity
| Facility | SOUTHERN MONTGOMERY CO MUD WWTP |
|---|---|
| Permittee | SOUTHERN MONTGOMERY COUNTY MUD |
| NPDES ID | TX0024759 |
| Status | Administratively continued |
| Type | Individual permit |
| Class | Major |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 9, 2018 |
| Expires | April 9, 2023 |
| Address | Montgomery County, TX 77376 |
| Receiving water | MONTGOMERY CO DRAINAGE DISTRICT 6 |
| Subwatershed | Panther Branch-Spring Creek (HUC 120401020212) |
| SIC | 4952 – Sewerage Systems |
NPDES TX0024759: effluent limits and exceedances
SOUTHERN MONTGOMERY CO MUD WWTP (NPDES TX0024759): 54 pollutants on file, 54 limited; 44 with a violation of any kind, 3 with an exceedance.
| Pollutant | Limits | Violations | Exceedances | Latest | Largest, as filed |
|---|---|---|---|---|---|
| E. coli | 2 | 18 | 15 | May 31, 2026 | 2,320% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 22 | 5 | May 31, 2024 | 16% over the limit |
| Chlorine, total residual | 2 | 13 | 2 | February 28, 2021 | 3,900% over the limit |
| Nitrogen, ammonia total [as N] | 3 | 16 | 0 | ||
| Solids, total suspended | 3 | 12 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 3 | 12 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 12 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 12 | 0 | ||
| pH | 3 | 10 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 2 | 10 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 2 | 10 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 2 | 10 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 8 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 8 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 8 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 8 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 8 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 8 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 8 | 0 | ||
| Arsenic, dry weight | 5 | 5 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 5 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 5 | 0 | ||
| Selenium, dry weight | 3 | 3 | 0 | ||
| Copper, dry weight | 3 | 3 | 0 | ||
| Cadmium, dry weight | 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 | ||
| Nickel, total [as Ni] | 2 | 2 | 0 | ||
| Level of pathogen requirements achieved | 2 | 2 | 0 | ||
| Description of pathogen option used | 2 | 2 | 0 | ||
| Vector attraction reduction alternative used | 2 | 2 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 2 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 2 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 2 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 2 | 0 | ||
| Fecal coliform | 1 | 1 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 1 | 0 | ||
| Unit w/liner/leachate collection system | 1 | 1 | 0 | ||
| Boundary areas | 1 | 1 | 0 | ||
| Salmonella | 1 | 1 | 0 | ||
| Pollutant table from 503.13 | 1 | 1 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 0 | 0 | ||
| Annual whole sludge application rate | 1 | 0 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 0 | 0 | ||
| Annual amt of sludge incinerated | 1 | 0 | 0 | ||
| Annual sludge production, total | 1 | 0 | 0 | ||
| Annual amount of sludge land applied | 1 | 0 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 0 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 0 | 0 | ||
| Annual amt sludge transported interstate | 1 | 0 | 0 |
NPDES TX0024759: inspections, violations and enforcement
NPDES TX0024759: 2 single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 25, 2025 | Permit Violations - Violation Specified in Comment | ST6 |
| July 17, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
NPDES TX0024759: 1 formal enforcement action
1 of them with a penalty assessed. How penalties are shown.
| Date | What EPA recorded | Agency | Federal penalty | State or local penalty |
|---|---|---|---|---|
| July 7, 2026 | State CWA Penalty AO | State | $28,125 |
NPDES TX0024759 (SOUTHERN MONTGOMERY CO MUD WWTP): no inspection and informal enforcement action on file.
Watch NPDES TX0024759
NPDES TX0024759: one email when its EPA record changes — $99/month.
Permits near NPDES TX0024759
NPDES TX0024759: 54 pollutant rows, 3 dated events; ICIS-NPDES download, loaded October 14, 2026.