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Clean Water Act discharge permit · NPDES TX0046680

TIMBER LANE UTILITY DISTRICT WWTP, Houston, TX: NPDES TX0046680 discharge permit, effluent exceedances, inspections, penalties

TIMBER LANE UTILITY DISTRICT WWTP, held by TIMBER LANE UTILITY DISTRICT, holds NPDES permit TX0046680, which discharges to Schultz Gully, Cypress Creek. EPA’s file records it issued May 18, 2018 and expiring May 18, 2023.

TIMBER LANE UTILITY DISTRICT WWTP, Houston, Texas: Individual permit TX0046680, held by TIMBER LANE UTILITY DISTRICT; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued May 18, 2018, term to May 18, 2023; discharges to SCHULTZ GULLY, CYPRESS CREEK.

  • E. coli: 2 limits, 64 violations of any kind, 64 effluent exceedances, latest June 30, 2026, largest 99,999% over the limit.
  • Nitrogen, ammonia total [as N]: 6 limits, 75 violations of any kind, 30 effluent exceedances, latest March 31, 2012, largest 632% over the limit.
  • Copper, total [as Cu]: 3 limits, 78 violations of any kind, 9 effluent exceedances, latest November 30, 2021, largest 297% over the limit.
  • Coliform, fecal general: 0 limits, 47 violations of any kind, 5 effluent exceedances, latest September 30, 2013, largest 99,999% over the limit.
  • BOD, carbonaceous [5 day, 20 C]: 6 limits, 67 violations of any kind, 4 effluent exceedances, latest August 31, 2010, largest 35% over the limit.
  • Flow, in conduit or thru treatment plant: 4 limits, 93 violations of any kind, 2 effluent exceedances, latest May 31, 2015, largest 11% over the limit.
  • Solids, total dissolved: 3 limits, 68 violations of any kind, 2 effluent exceedances, latest February 28, 2017, largest 20% over the limit.
  • Oxygen, dissolved [DO]: 2 limits, 23 violations of any kind, 1 effluent exceedance, latest July 31, 2006, largest 3% over the limit.
  • Solids, total suspended: 3 limits, 69 violations of any kind, 0 effluent exceedances.
  • pH: 3 limits, 46 violations of any kind, 0 effluent exceedances.
  • LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 32 violations of any kind, 0 effluent exceedances.
  • Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 30 violations of any kind, 0 effluent exceedances.
  • LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 30 violations of any kind, 0 effluent exceedances.
  • LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 28 violations of any kind, 0 effluent exceedances.
  • Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 26 violations of any kind, 0 effluent exceedances.
  • NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 26 violations of any kind, 0 effluent exceedances.
  • NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 26 violations of any kind, 0 effluent exceedances.
  • Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia: 2 limits, 26 violations of any kind, 0 effluent exceedances.
  • LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 26 violations of any kind, 0 effluent exceedances.
  • NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 24 violations of any kind, 0 effluent exceedances.
  • NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas: 2 limits, 24 violations of any kind, 0 effluent exceedances.
  • Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas: 2 limits, 24 violations of any kind, 0 effluent exceedances.
  • Di[2-ethylhexyl] phthalate [DEHP]: 3 limits, 16 violations of any kind, 0 effluent exceedances.
  • Whole effluent toxicity - retest #2: 3 limits, 6 violations of any kind, 0 effluent exceedances.
  • Whole effluent toxicity - retest #1: 3 limits, 4 violations of any kind, 0 effluent exceedances.
  • Toxicity characteristic leaching procedure: 1 limit, 2 violations of any kind, 0 effluent exceedances.
  • LC50 Pass/Fail Static 24Hr Acute D. Pulex: 1 limit, 2 violations of any kind, 0 effluent exceedances.
  • LC50 Pass/Fail Static 24Hr Acute Pimephales promelas: 1 limit, 2 violations of any kind, 0 effluent exceedances.
  • Polychlorinated biphenyls [PCBs]: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • Annual amount of sludge land applied: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • Annual amt. sludge disposed surface unit: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • Annual amt sludge disposed in landfill: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • Annual amt sludge transported interstate: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • Compliance w/part 258 sludge requirement: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • Arsenic, dry weight: 5 limits, 0 violations of any kind, 0 effluent exceedances.
  • Chromium, sludge, total, dry weight [as Cr]: 5 limits, 0 violations of any kind, 0 effluent exceedances.
  • Selenium, dry weight: 3 limits, 0 violations of any kind, 0 effluent exceedances.
  • Copper, dry weight: 3 limits, 0 violations of any kind, 0 effluent exceedances.
  • Cadmium, dry weight: 3 limits, 0 violations of any kind, 0 effluent exceedances.
  • Molybdenum, sludge, total, dry weight [as Mo]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
  • Zinc, sludge, total, dry weight [as Zn]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
  • Lead, sludge, total, dry weight [as Pb]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
  • Nickel, sludge, total, dry weight [as Ni]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
  • Mercury, sludge, total, dry weight [as Hg]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
  • Nickel, total [as Ni]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • Level of pathogen requirements achieved: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • Description of pathogen option used: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • Vector attraction reduction alternative used: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • Fecal coliform: 1 limit, 0 violations of any kind, 0 effluent exceedances.
  • Annual whole sludge application rate: 1 limit, 0 violations of any kind, 0 effluent exceedances.
  • Ann. amt sludge disposed by other method: 1 limit, 0 violations of any kind, 0 effluent exceedances.
  • Annual amt of sludge incinerated: 1 limit, 0 violations of any kind, 0 effluent exceedances.
  • Annual sludge production, total: 1 limit, 0 violations of any kind, 0 effluent exceedances.
  • Unit w/liner/leachate collection system: 1 limit, 0 violations of any kind, 0 effluent exceedances.
  • Boundary areas: 1 limit, 0 violations of any kind, 0 effluent exceedances.
  • Salmonella: 1 limit, 0 violations of any kind, 0 effluent exceedances.
  • Pollutant table from 503.13: 1 limit, 0 violations of any kind, 0 effluent exceedances.
  • November 30, 2021: Permit Violations - Violation Specified in Comment (ST6).

Texas holds 1,720 Publicly owned treatment works coverages of this permit type in EPA’s file; 783 were issued before TX0046680.

Coverages issued nearest TX0046680

TIMBER LANE UTILITY DISTRICT WWTP among its neighbors

EPA’s permit file holds 170 discharge permits in the Turkey Creek-Cypress Creek subwatershed (HUC 120401020107), TX0046680 among them. Its county holds 4,455, 195 of them major permits; TX0046680 is a major permit.

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

Identity

Facility as filedTIMBER LANE UTILITY DISTRICT WWTP
Permittee as filedTIMBER LANE UTILITY DISTRICT
NPDES IDTX0046680
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedMay 18, 2018
Expiration dateMay 18, 2023
AddressHouston, TX 77373
Receiving waterSCHULTZ GULLY, CYPRESS CREEK
SubwatershedTurkey Creek-Cypress Creek (HUC 120401020107)
SIC4952 – Sewerage Systems

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
E. coli26464June 30, 202699,999% over the limit
Nitrogen, ammonia total [as N]67530March 31, 2012632% over the limit
Copper, total [as Cu]3789November 30, 2021297% over the limit
Coliform, fecal general0475September 30, 201399,999% over the limit
BOD, carbonaceous [5 day, 20 C]6674August 31, 201035% over the limit
Flow, in conduit or thru treatment plant4932May 31, 201511% over the limit
Solids, total dissolved3682February 28, 201720% over the limit
Oxygen, dissolved [DO]2231July 31, 20063% over the limit
Solids, total suspended3690
pH3460
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia2320
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia2300
LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia2300
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas2280
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas2260
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia2260
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia2260
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia2260
LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas2260
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas2240
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas2240
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pinephales promelas2240
Di[2-ethylhexyl] phthalate [DEHP]3160
Whole effluent toxicity - retest #2360
Whole effluent toxicity - retest #1340
Toxicity characteristic leaching procedure120
LC50 Pass/Fail Static 24Hr Acute D. Pulex120
LC50 Pass/Fail Static 24Hr Acute Pimephales promelas120
Polychlorinated biphenyls [PCBs]110
Annual amount of sludge land applied110
Annual amt. sludge disposed surface unit110
Annual amt sludge disposed in landfill110
Annual amt sludge transported interstate110
Compliance w/part 258 sludge requirement110
Arsenic, dry weight500
Chromium, sludge, total, dry weight [as Cr]500
Selenium, dry weight300
Copper, dry weight300
Cadmium, dry weight300
Molybdenum, sludge, total, dry weight [as Mo]300
Zinc, sludge, total, dry weight [as Zn]300
Lead, sludge, total, dry weight [as Pb]300
Nickel, sludge, total, dry weight [as Ni]300
Mercury, sludge, total, dry weight [as Hg]300
Nickel, total [as Ni]200
Level of pathogen requirements achieved200
Description of pathogen option used200
Vector attraction reduction alternative used200
Fecal coliform100
Annual whole sludge application rate100
Ann. amt sludge disposed by other method100
Annual amt of sludge incinerated100
Annual sludge production, total100
Unit w/liner/leachate collection system100
Boundary areas100
Salmonella100
Pollutant table from 503.13100

Inspections, violations and enforcement

DateWhat EPA recordedAgency
November 30, 2021Permit Violations - Violation Specified in CommentST6

Inspections

EPA’s inspection file holds no inspection for NPDES TX0046680.

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 TX0046680.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

This public-records page covers NPDES permit TX0046680 for the Timber Lane Utility District WWTP in Houston, TX, held by Timber Lane Utility District, which discharges to Schultz Gully and Cypress Creek in the Turkey Creek-Cypress Creek subwatershed (HUC 120401020107). The page lists the permit as a Major discharger class, administratively continued, with 8 pollutants under a numeric limit and 56 pollutants with an effluent exceedance.