Clean Water Act discharge permit · NPDES TX0129071
HARRIS COUNTY MUD 500 HORSEPEN CREEK WWTP, Cypress, TX: NPDES TX0129071 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
HARRIS COUNTY MUD 500 HORSEPEN CREEK WWTP, held by HARRIS COUNTY MUD 500, holds NPDES permit TX0129071, which discharges to Horsepen Ck;Langham Ck;Bear Ck;So Mayde Ck. EPA’s file records it issued July 29, 2022 and expiring July 29, 2027. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | HARRIS COUNTY MUD 500 HORSEPEN CREEK WWTP |
|---|---|
| Permittee as filed | HARRIS COUNTY MUD 500 |
| NPDES ID | TX0129071 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | July 29, 2022 |
| Expiration date | July 29, 2027 |
| Address | Cypress, TX 77433 |
| Receiving water | HORSEPEN CK;LANGHAM CK;BEAR CK;SO MAYDE CK |
| Subwatershed | Langham Creek (HUC 120401040201) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 37Pollutants on file
- 8Under a numeric limit
- 37With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 3 | 15 | 9 | April 30, 2023 | 148% over the limit |
| Solids, total suspended | 3 | 10 | 7 | April 30, 2023 | 165% over the limit |
| E. coli | 2 | 5 | 3 | May 31, 2019 | 446% over the limit |
| Oxygen, dissolved [DO] | 1 | 3 | 2 | August 31, 2016 | 14% over the limit |
| pH | 2 | 4 | 1 | December 31, 2009 | |
| Chromium, sludge, total, dry weight [as Cr] | 0 | 5 | 0 | ||
| Arsenic, dry weight | 0 | 4 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 3 | 3 | 0 | ||
| Selenium, dry weight | 0 | 3 | 0 | ||
| Copper, dry weight | 0 | 3 | 0 | ||
| Cadmium, dry weight | 0 | 3 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 0 | 3 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 0 | 3 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 0 | 3 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 0 | 3 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 0 | 3 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 2 | 0 | ||
| Chlorine, total residual | 2 | 2 | 0 | ||
| Nickel, total [as Ni] | 0 | 2 | 0 | ||
| Level of pathogen requirements achieved | 0 | 2 | 0 | ||
| Description of pathogen option used | 0 | 2 | 0 | ||
| Vector attraction reduction alternative used | 0 | 2 | 0 | ||
| Fecal coliform | 0 | 1 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 0 | 1 | 0 | ||
| Toxicity characteristic leaching procedure | 0 | 1 | 0 | ||
| Ann. amt sludge disposed by other method | 0 | 1 | 0 | ||
| Annual amt of sludge incinerated | 0 | 1 | 0 | ||
| Annual sludge production, total | 0 | 1 | 0 | ||
| Annual amount of sludge land applied | 0 | 1 | 0 | ||
| Annual amt. sludge disposed surface unit | 0 | 1 | 0 | ||
| Annual amt sludge disposed in landfill | 0 | 1 | 0 | ||
| Annual amt sludge transported interstate | 0 | 1 | 0 | ||
| Unit w/liner/leachate collection system | 0 | 1 | 0 | ||
| Compliance w/part 258 sludge requirement | 0 | 1 | 0 | ||
| Boundary areas | 0 | 1 | 0 | ||
| Salmonella | 0 | 1 | 0 | ||
| Pollutant table from 503.13 | 0 | 1 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 30, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES TX0129071.
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 TX0129071.
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, TX0129071.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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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 TX0129071 there.
HARRIS COUNTY MUD 500 HORSEPEN CREEK WWTP, Cypress, Texas: Individual permit TX0129071, held by HARRIS COUNTY MUD 500; Publicly owned treatment works; Effective; issued July 29, 2022, term to July 29, 2027; discharges to HORSEPEN CK;LANGHAM CK;BEAR CK;SO MAYDE CK.
- Nitrogen, ammonia total [as N]: 3 limits, 15 violations of any kind, 9 effluent exceedances, latest April 30, 2023, largest 148% over the limit.
- Solids, total suspended: 3 limits, 10 violations of any kind, 7 effluent exceedances, latest April 30, 2023, largest 165% over the limit.
- E. coli: 2 limits, 5 violations of any kind, 3 effluent exceedances, latest May 31, 2019, largest 446% over the limit.
- Oxygen, dissolved [DO]: 1 limit, 3 violations of any kind, 2 effluent exceedances, latest August 31, 2016, largest 14% over the limit.
- pH: 2 limits, 4 violations of any kind, 1 effluent exceedance, latest December 31, 2009.
- Chromium, sludge, total, dry weight [as Cr]: 0 limits, 5 violations of any kind, 0 effluent exceedances.
- Arsenic, dry weight: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- BOD, carbonaceous [5 day, 20 C]: 3 limits, 3 violations of any kind, 0 effluent exceedances.
- Selenium, dry weight: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Copper, dry weight: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Cadmium, dry weight: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Molybdenum, sludge, total, dry weight [as Mo]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Zinc, sludge, total, dry weight [as Zn]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Lead, sludge, total, dry weight [as Pb]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Nickel, sludge, total, dry weight [as Ni]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Mercury, sludge, total, dry weight [as Hg]: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Chlorine, total residual: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Nickel, total [as Ni]: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Level of pathogen requirements achieved: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Description of pathogen option used: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Vector attraction reduction alternative used: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- Fecal coliform: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Polychlorinated biphenyls [PCBs]: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Toxicity characteristic leaching procedure: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Ann. amt sludge disposed by other method: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Annual amt of sludge incinerated: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Annual sludge production, total: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Annual amount of sludge land applied: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Annual amt. sludge disposed surface unit: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Annual amt sludge disposed in landfill: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Annual amt sludge transported interstate: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Unit w/liner/leachate collection system: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Compliance w/part 258 sludge requirement: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Boundary areas: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Salmonella: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Pollutant table from 503.13: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- September 30, 2024: Permit Violations - Violation Specified in Comment (ST6).
Texas holds 1,720 Publicly owned treatment works coverages of this permit type in EPA’s file; 1,604 were issued before TX0129071. HARRIS COUNTY MUD 500 holds 2 permits in Texas.
Other permits held by HARRIS COUNTY MUD 500
- CYPRESS CREEK WWTP, Cypress: TX0117854, issued February 15, 2018
Coverages issued nearest TX0129071
- June 6, 2022: NEW WAVERLY WWTP 2, New Waverly, TX0087831, held by CITY OF NEW WAVERLY
- June 23, 2022: CATHERINE BRANCH WATER RESOURCE RECOVERY FACILITY, Northlake, TX0141151, held by TOWN OF NORTHLAKE
- July 13, 2022: HARRIS COUNTY MUD 418 WWTP 2, Cypress, TX0141291, held by HARRIS COUNT Y MUD 418
- July 13, 2022: DOUBLE R MUD 2A OF HUNT AND COLLIN COUNTIES WWTP, City Of Josephine, TX0141879, held by DOUBLE R MUD 2A OF HUNT AND COLLIN COUNTIES
- July 15, 2022: MABANK WWTP, Mabank, TX0052949, held by MABANK, CITY OF
- August 2, 2022: STONEBROOKE SECTIONS 1 AND 2, Conroe, TX0142000, held by MONTGOMERY COUNTY MUD 212
- August 15, 2022: CITY OF ALVORD WWTP, Alvord, TX0142204, held by ALVORD, CITY OF
- September 1, 2022: JACKRABBIT ROAD PUD WWTP, Houston, TX0046621, held by JACKRABBIT ROAD PUBLIC UTILITY DISTRICT
- September 8, 2022: GREEN RIDGE WWTP, Houston, TX0026433, held by HOUSTON, CITY OF
- September 9, 2022: HARRIS COUNTY MUD 558 WWTF, Tomball, TX0141577, held by HARRIS COUNTY MUD 558
HARRIS COUNTY MUD 500 HORSEPEN CREEK WWTP among its neighbors
EPA’s permit file holds 114 discharge permits in the Langham Creek subwatershed (HUC 120401040201), TX0129071 among them. Its county holds 4,455, 195 of them major permits; TX0129071 is a minor permit.
Other permits in the Langham Creek subwatershed (HUC 120401040201)
- 1VISION TELGE FACILITY, Houston: TXRNECB50, minor permit, permit term to August 13, 2026
- 25-003 - CYLIFE PHASE 1, Cypress: TXR1539VI, minor permit, discharging to CYPRESS CREEK, permit term to March 4, 2028
- ADDICKS FAIRBANKS LANDFILL, Houston: TXRNEBJ75, minor permit, permit term to August 13, 2026
- APARTMENT AT MARVIDA, Cypress: TXR1532TZ, minor permit, discharging to CYPRESS CREEK, permit term to March 4, 2028
- ARTIFICIAL TURF FIELD, Cypress: TXR1586OW, minor permit, discharging to DINNER CREEK, permit term to March 4, 2028
- ATCO DEVELOPMENT WWTP, Houston Country Club: TX0136301, not classed
- ATCO INDUSTRIAL PARK WWTP, Houston: TX0133221, not classed
- AVALON AT CYPRESS, Cypress: TXR1506OO, minor permit, discharging to DINNER CREEK, permit term to March 4, 2028
- AVALON AT CYPRESS WEST SECTION 1, Cypress: TXR1567NH, minor permit, discharging to LANGHAM CREEK, permit term to March 4, 2028
- BARKER RESERVOIR, Houston: TXR1505XW, minor permit, discharging to BUFFALO BAYOU, permit term to March 4, 2028
Nearby on the register
- Discharge permits in Cypress
- Every permit record in Cypress, 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.