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NPDES TX0089184 · Clean Water Act

HARRIS COUNTY MUD 221 WWTP, Houston, TX: NPDES TX0089184 discharge permit, effluent exceedances, inspections, penalties

HARRIS COUNTY MUD 221 WWTP, Houston, Texas: Individual permit TX0089184, held by HARRIS COUNTY MUD 221; Publicly owned treatment works; Administratively continued; issued February 15, 2018, term to February 1, 2023; discharges to TURKEYCK(HCFCD K111-00-00)CYPRES CREEK.

3 of the 60 pollutants listed for NPDES TX0089184 have no violation or effluent exceedance.

  • Solids, total dissolved: 0 limits, 20 violations of any kind, 20 effluent exceedances, latest January 31, 2007, largest 52% over the limit.
  • E. coli: 2 limits, 6 violations of any kind, 6 effluent exceedances, latest March 31, 2019, largest 1,118% over the limit.
  • Oxygen, dissolved [DO]: 1 limit, 6 violations of any kind, 4 effluent exceedances, latest January 31, 2024, largest 17% over the limit.
  • Nitrogen, ammonia total [as N]: 3 limits, 6 violations of any kind, 3 effluent exceedances, latest March 31, 2010, largest 40% over the limit.
  • Whole effluent toxicity: 0 limits, 6 violations of any kind, 2 effluent exceedances, latest March 31, 2015, largest 99,999% over the limit.
  • Chlorine, total residual: 2 limits, 5 violations of any kind, 2 effluent exceedances, latest February 28, 2017, largest 40% over the limit.
  • Whole Effluent Toxicity [WET] - C. dubia: 4 limits, 2 violations of any kind, 2 effluent exceedances, latest December 31, 2018, largest 49% over the limit.
  • Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 22 violations of any kind.
  • NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 22 violations of any kind.
  • Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 22 violations of any kind.
  • NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 20 violations of any kind.
  • LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 10 violations of any kind.
  • LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 10 violations of any kind.
  • BOD, carbonaceous [5 day, 20 C]: 3 limits, 9 violations of any kind.
  • Whole effluent toxicity - retest #1: 3 limits, 8 violations of any kind.
  • Whole effluent toxicity - retest #2: 3 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 Pinephales promelas: 2 limits, 8 violations of any kind.
  • Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 6 violations of any kind.
  • NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 6 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.
  • Flow, in conduit or thru treatment plant: 4 limits, 4 violations of any kind.
  • LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 4 violations of any kind.
  • LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 4 violations of any kind.
  • pH: 3 limits, 3 violations of any kind.
  • Solids, total suspended: 3 limits, 3 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.
  • Fecal coliform: 1 limit, 1 violation of any kind.
  • Polychlorinated biphenyls [PCBs]: 1 limit, 1 violation of any kind.
  • Toxicity characteristic leaching procedure: 1 limit, 1 violation of any kind.
  • Ann. amt sludge disposed by other method: 1 limit, 1 violation of any kind.
  • Annual amt of sludge incinerated: 1 limit, 1 violation of any kind.
  • Annual sludge production, total: 1 limit, 1 violation of any kind.
  • Annual amount of sludge land applied: 1 limit, 1 violation of any kind.
  • Annual amt. sludge disposed surface unit: 1 limit, 1 violation of any kind.
  • Annual amt sludge disposed in landfill: 1 limit, 1 violation of any kind.
  • Annual amt sludge transported interstate: 1 limit, 1 violation of any kind.
  • Unit w/liner/leachate collection system: 1 limit, 1 violation of any kind.
  • Compliance w/part 258 sludge requirement: 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.
  • LC50 Pass/Fail Static 24Hr Acute D. Pulex: 1 limit, 1 violation of any kind.
  • LC50 Pass/Fail Static 24Hr Acute Pimephales promelas: 1 limit, 1 violation of any kind.
  • Coliform, fecal general: 0 limits, 1 violation of any kind.
  • Chloride [as Cl]: 3 limits.
  • Sulfate, total [as SO4]: 3 limits.
  • Annual whole sludge application rate: 1 limit.
  • January 28, 2025: Permit Violations - Violation Specified in Comment (ST6).
  • March 9, 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; 686 were issued before TX0089184.

Coverages issued nearest TX0089184

HARRIS COUNTY MUD 221 WWTP among its neighbors

170 discharge permits are in the Turkey Creek-Cypress Creek subwatershed (HUC 120401020107); TX0089184 is one. Its county: 4,455, 195 major; TX0089184 is major permit.

Other permits in the Turkey Creek-Cypress Creek subwatershed (HUC 120401020107)

Identity

FacilityHARRIS COUNTY MUD 221 WWTP
PermitteeHARRIS COUNTY MUD 221
NPDES IDTX0089184
StatusAdministratively continued
TypeIndividual permit
ClassMajor
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedFebruary 15, 2018
ExpiresFebruary 1, 2023
AddressHouston, TX 77024
Receiving waterTURKEYCK(HCFCD K111-00-00)CYPRES CREEK
SubwatershedTurkey Creek-Cypress Creek (HUC 120401020107)
SIC4952 – Sewerage Systems

NPDES TX0089184: effluent limits and exceedances

HARRIS COUNTY MUD 221 WWTP (NPDES TX0089184): 60 pollutants on file, 57 limited; 57 with a violation of any kind, 7 with an exceedance.

How exceedances are counted.

PollutantLimitsViolationsExceedancesLatestLargest, as filed
Solids, total dissolved02020January 31, 200752% over the limit
E. coli266March 31, 20191,118% over the limit
Oxygen, dissolved [DO]164January 31, 202417% over the limit
Nitrogen, ammonia total [as N]363March 31, 201040% over the limit
Whole effluent toxicity062March 31, 201599,999% over the limit
Chlorine, total residual252February 28, 201740% over the limit
Whole Effluent Toxicity [WET] - C. dubia422December 31, 201849% over the limit
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia2220
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia2220
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia2220
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia2200
LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia2100
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia2100
BOD, carbonaceous [5 day, 20 C]390
Whole effluent toxicity - retest #1380
Whole effluent toxicity - retest #2380
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas280
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas280
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas260
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas260
Arsenic, dry weight550
Chromium, sludge, total, dry weight [as Cr]550
Flow, in conduit or thru treatment plant440
LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas240
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas240
pH330
Solids, total suspended330
Selenium, dry weight330
Copper, dry weight330
Cadmium, dry weight330
Molybdenum, sludge, total, dry weight [as Mo]330
Zinc, sludge, total, dry weight [as Zn]330
Lead, sludge, total, dry weight [as Pb]330
Nickel, sludge, total, dry weight [as Ni]330
Mercury, sludge, total, dry weight [as Hg]330
Nickel, total [as Ni]220
Level of pathogen requirements achieved220
Description of pathogen option used220
Vector attraction reduction alternative used220
Fecal coliform110
Polychlorinated biphenyls [PCBs]110
Toxicity characteristic leaching procedure110
Ann. amt sludge disposed by other method110
Annual amt of sludge incinerated110
Annual sludge production, total110
Annual amount of sludge land applied110
Annual amt. sludge disposed surface unit110
Annual amt sludge disposed in landfill110
Annual amt sludge transported interstate110
Unit w/liner/leachate collection system110
Compliance w/part 258 sludge requirement110
Boundary areas110
Salmonella110
Pollutant table from 503.13110
LC50 Pass/Fail Static 24Hr Acute D. Pulex110
LC50 Pass/Fail Static 24Hr Acute Pimephales promelas110
Coliform, fecal general010
Chloride [as Cl]300
Sulfate, total [as SO4]300
Annual whole sludge application rate100

NPDES TX0089184: inspections, violations and enforcement

NPDES TX0089184: 2 single-event violations

DateWhat EPA recordedAgency
January 28, 2025Permit Violations - Violation Specified in CommentST6
March 9, 2017Permit Violations - Violation Specified in CommentST6

NPDES TX0089184 (HARRIS COUNTY MUD 221 WWTP): no inspection, formal enforcement action and informal enforcement action on file.

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Permits near NPDES TX0089184

NPDES TX0089184: 60 pollutant rows, 2 dated events; ICIS-NPDES download, loaded October 14, 2026.