NPDES TX0062031 · Clean Water Act
HARRIS COUNTY MUD 70, Houston, TX: NPDES TX0062031 discharge permit, effluent exceedances, inspections, penalties
HARRIS COUNTY MUD 70, Houston, Texas: Individual permit TX0062031; Publicly owned treatment works; Administratively continued; issued August 2, 2017, term to May 1, 2022; discharges to LANGHAM CREEK; BEAR CREEK;MAYDE CRK.
30 of the 55 pollutants listed for NPDES TX0062031 have no violation or effluent exceedance.
- Nitrogen, ammonia total [as N]: 3 limits, 6 violations of any kind, 3 effluent exceedances, latest April 30, 2023, largest 34% over the limit.
- E. coli: 2 limits, 3 violations of any kind, 3 effluent exceedances, latest February 28, 2026, largest 820% over the limit.
- Flow, in conduit or thru treatment plant: 4 limits, 9 violations of any kind, 2 effluent exceedances, latest July 31, 2024, largest 174% over the limit.
- Chlorine, total residual: 2 limits, 3 violations of any kind, 1 effluent exceedance, latest November 30, 2009, largest 92% over the limit.
- Oxygen, dissolved [DO]: 1 limit, 2 violations of any kind, 1 effluent exceedance, latest June 30, 2005, largest 23% over the limit.
- Alkalinity, total [as CaCO3]: 1 limit, 1 violation of any kind, 1 effluent exceedance, latest December 31, 2021, largest 99,999% over the limit.
- LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 12 violations of any kind.
- LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 12 violations of any kind.
- Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 10 violations of any kind.
- NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 10 violations of any kind.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 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 Ceriodaphnia dubia: 2 limits, 8 violations of any kind.
- LOEC Sub-Lethal Reproduction 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 Ceriodaphnia dubia: 2 limits, 6 violations of any kind.
- NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 6 violations of any kind.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 6 violations of any kind.
- Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 6 violations of any kind.
- LC50 Pass/Fail Static 24Hr Acute D. Pulex: 1 limit, 5 violations of any kind.
- LC50 Pass/Fail Static 24Hr Acute Pimephales promelas: 1 limit, 5 violations of any kind.
- Solids, total suspended: 3 limits, 3 violations of any kind.
- BOD, carbonaceous [5 day, 20 C]: 3 limits, 3 violations of any kind.
- pH: 3 limits, 2 violations of any kind.
- Whole effluent toxicity - retest #1: 3 limits, 1 violation of any kind.
- Whole effluent toxicity - retest #2: 3 limits, 1 violation of any kind.
- Arsenic, dry weight: 5 limits.
- Chromium, sludge, total, dry weight [as Cr]: 5 limits.
- Selenium, dry weight: 3 limits.
- Copper, dry weight: 3 limits.
- Cadmium, dry weight: 3 limits.
- Molybdenum, sludge, total, dry weight [as Mo]: 3 limits.
- Zinc, sludge, total, dry weight [as Zn]: 3 limits.
- Lead, sludge, total, dry weight [as Pb]: 3 limits.
- Nickel, sludge, total, dry weight [as Ni]: 3 limits.
- Mercury, sludge, total, dry weight [as Hg]: 3 limits.
- Nickel, total [as Ni]: 2 limits.
- Level of pathogen requirements achieved: 2 limits.
- Description of pathogen option used: 2 limits.
- Vector attraction reduction alternative used: 2 limits.
- Fecal coliform: 1 limit.
- Polychlorinated biphenyls [PCBs]: 1 limit.
- Toxicity characteristic leaching procedure: 1 limit.
- 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.
- Unit w/liner/leachate collection system: 1 limit.
- Compliance w/part 258 sludge requirement: 1 limit.
- Boundary areas: 1 limit.
- Salmonella: 1 limit.
- Pollutant table from 503.13: 1 limit.
- June 22, 2026: Permit Violations - Violation Specified in Comment (ST6).
- June 22, 2026: Evaluation (S).
- February 7, 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; 537 were issued before TX0062031.
Coverages issued nearest TX0062031
- 2017-07-25: TOWN OF VAN HORN SEWAGE TREATMENT PLANT, Van Horn: TX0107867, held by VAN HORN, TOWN OF
- 2017-07-27: NEW WAVERLY WWTP 1, New Waverly: TX0056685, held by CITY OF NEW WAVERLY
- 2017-07-27: HARRIS COUNTY MUD 287 WWTP, Houston: TX0125164, held by HARRIS COUNTY MUD 287
- 2017-07-27: WALLER COUNTY ROAD IMPROVEMENT DISTRICT 1 WWTF, Waller County: TX0127264, held by WALLER COUNTY RID NO. 1
- 2017-07-27: STEWART CREEK WWTP, Montgomery: TX0128031, held by MONTGOMERY, CITY OF
- 2017-08-02: IOLA ISD WWTP, Iola: TX0092363, held by IOLA ISD
- 2017-08-02: GRAND LAKES REGIONAL WWTP, Fort Bend County: TX0099856, held by GRAND LAKES MUD 4
- 2017-08-04: COPPERFIELD PLANT WWTP, Houston: TX0075884, held by HARRIS COUNTY MUD 208
- 2017-08-04: HIGHLANDS OF SALADO WWTF, Bell County: TX0125610, held by VILLAGE OF SALADO
- 2017-08-09: HARRIS COUNTY MUD 127 WWTP, Katy: TX0083500, held by HARRIS COUNTY MUD 127
HARRIS COUNTY MUD 70 among its neighbors
114 discharge permits are in the Langham Creek subwatershed (HUC 120401040201); TX0062031 is one. Its county: 4,455, 195 major; TX0062031 is major permit.
Other permits in the Langham Creek subwatershed (HUC 120401040201)
- 1VISION TELGE FACILITY, Houston: TXRNECB50, minor, term to 2026-08-13
- 25-003 - CYLIFE PHASE 1, Cypress: TXR1539VI, minor, term to 2028-03-04
- ADDICKS FAIRBANKS LANDFILL, Houston: TXRNEBJ75, minor, term to 2026-08-13
- APARTMENT AT MARVIDA, Cypress: TXR1532TZ, minor, term to 2028-03-04
- ARTIFICIAL TURF FIELD, Cypress: TXR1586OW, minor, term to 2028-03-04
- ATCO DEVELOPMENT WWTP, Houston Country Club: TX0136301
- ATCO INDUSTRIAL PARK WWTP, Houston: TX0133221
- AVALON AT CYPRESS, Cypress: TXR1506OO, minor, term to 2028-03-04
- AVALON AT CYPRESS WEST SECTION 1, Cypress: TXR1567NH, minor, term to 2028-03-04
- BARKER RESERVOIR, Houston: TXR1505XW, minor, term to 2028-03-04
Identity
| Facility | HARRIS COUNTY MUD 70 |
|---|---|
| Permittee | HARRIS COUNTY MUD 70 |
| NPDES ID | TX0062031 |
| Status | Administratively continued |
| Type | Individual permit |
| Class | Major |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | August 2, 2017 |
| Expires | May 1, 2022 |
| Address | Houston, TX 77056 |
| Receiving water | LANGHAM CREEK; BEAR CREEK;MAYDE CRK |
| Subwatershed | Langham Creek (HUC 120401040201) |
| SIC | 4952 – Sewerage Systems |
NPDES TX0062031: effluent limits and exceedances
HARRIS COUNTY MUD 70 (NPDES TX0062031): 55 pollutants on file, 55 limited; 25 with a violation of any kind, 6 with an exceedance.
| Pollutant | Limits | Violations | Exceedances | Latest | Largest, as filed |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 3 | 6 | 3 | April 30, 2023 | 34% over the limit |
| E. coli | 2 | 3 | 3 | February 28, 2026 | 820% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 9 | 2 | July 31, 2024 | 174% over the limit |
| Chlorine, total residual | 2 | 3 | 1 | November 30, 2009 | 92% over the limit |
| Oxygen, dissolved [DO] | 1 | 2 | 1 | June 30, 2005 | 23% over the limit |
| Alkalinity, total [as CaCO3] | 1 | 1 | 1 | December 31, 2021 | 99,999% over the limit |
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 2 | 12 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 2 | 12 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 10 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 10 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 10 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas | 2 | 10 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 8 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 8 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 6 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 6 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 6 | 0 | ||
| Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 6 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute D. Pulex | 1 | 5 | 0 | ||
| LC50 Pass/Fail Static 24Hr Acute Pimephales promelas | 1 | 5 | 0 | ||
| Solids, total suspended | 3 | 3 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 3 | 3 | 0 | ||
| pH | 3 | 2 | 0 | ||
| Whole effluent toxicity - retest #1 | 3 | 1 | 0 | ||
| Whole effluent toxicity - retest #2 | 3 | 1 | 0 | ||
| Arsenic, dry weight | 5 | 0 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 5 | 0 | 0 | ||
| Selenium, dry weight | 3 | 0 | 0 | ||
| Copper, dry weight | 3 | 0 | 0 | ||
| Cadmium, dry weight | 3 | 0 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 0 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 0 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 0 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 0 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 0 | 0 | ||
| Nickel, total [as Ni] | 2 | 0 | 0 | ||
| Level of pathogen requirements achieved | 2 | 0 | 0 | ||
| Description of pathogen option used | 2 | 0 | 0 | ||
| Vector attraction reduction alternative used | 2 | 0 | 0 | ||
| Fecal coliform | 1 | 0 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 0 | 0 | ||
| Toxicity characteristic leaching procedure | 1 | 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 | ||
| Unit w/liner/leachate collection system | 1 | 0 | 0 | ||
| Compliance w/part 258 sludge requirement | 1 | 0 | 0 | ||
| Boundary areas | 1 | 0 | 0 | ||
| Salmonella | 1 | 0 | 0 | ||
| Pollutant table from 503.13 | 1 | 0 | 0 |
NPDES TX0062031: inspections, violations and enforcement
NPDES TX0062031: 2 single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 22, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| February 7, 2017 | Permit Violations - Violation Specified in Comment | ST6 |
NPDES TX0062031: 1 inspection
| Date | What EPA recorded | Agency |
|---|---|---|
| June 22, 2026 | Evaluation | S |
NPDES TX0062031 (HARRIS COUNTY MUD 70): no formal enforcement action and informal enforcement action on file.
Watch NPDES TX0062031
NPDES TX0062031: one email when its EPA record changes — $99/month.
Permits near NPDES TX0062031
NPDES TX0062031: 55 pollutant rows, 3 dated events; ICIS-NPDES download, loaded October 14, 2026.