Frantz, John Edward+ — NPDES permit TX0004961: limits, due date and EPA's record

Industrial Organic Chemicals, major discharger, Houston, Texas. NPDES permit TX0004961 expired Jan 27, 2025; its limits still apply. Last 12 months: over a limit once (last January 2026). Source: EPA ECHO, Oct 22, 2026.

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period ending	Parameter	Reported	Limit	Over by
January 2026	Oil & Grease, daily maximum	65 mg/L	≤ 15 mg/L	333%

Limits in force (206)

Parameter	Statistic	Limit	Months	Outfall
Temperature, water deg. fahrenheit	daily maximum	≤ 115 deg F	all year	001
pH	minimum	≥ 5 SU	all year	001
pH	maximum	≤ 11 SU	all year	001
Oil & Grease	daily maximum	≤ 15 mg/L	all year	001
Carbon, tot organic [TOC]	daily maximum	≤ 75 mg/L	all year	001
Flow, in conduit or thru treatment plant	daily average	≤ 1 MGD	all year	001
Flow, in conduit or thru treatment plant	daily maximum	≤ 3.7 MGD	all year	001
pH range excursions, > 60 minutes	monthly total	≤ 0 occur/mo	all year	001
pH range excursions, monthly total accum	monthly total	≤ 446 min	all year	001
Temperature, water deg. fahrenheit	daily maximum	≤ 105 deg F	all year	002
BOD, 5-day, 20 deg. C	daily average	≤ 574 lb/d	all year	002
BOD, 5-day, 20 deg. C	daily maximum	≤ 1412 lb/d	all year	002
pH	minimum	≥ 5 SU	all year	002
pH	maximum	≤ 11 SU	all year	002
Solids, total suspended	daily average	≤ 1401 lb/d	all year	002
Solids, total suspended	daily maximum	≤ 3972 lb/d	all year	002
Oil & Grease	daily average	≤ 459 lb/d	all year	002
Oil & Grease	daily maximum	≤ 688 lb/d	all year	002
Carbon, tot organic [TOC]	daily average	≤ 3442 lb/d	all year	002
Carbon, tot organic [TOC]	daily maximum	≤ 6885 lb/d	all year	002
Cyanide, free [amenable to chlorination]	daily average	≤ .378 lb/d	all year	002
Cyanide, free [amenable to chlorination]	daily maximum	≤ .8 lb/d	all year	002
Chromium, total [as Cr]	daily average	≤ 13.7 lb/d	all year	002
Chromium, total [as Cr]	daily maximum	≤ 29.1 lb/d	all year	002
Copper, total [as Cu]	daily average	≤ 1.85 lb/d	all year	002
Copper, total [as Cu]	daily maximum	≤ 3.92 lb/d	all year	002
Silver, total [as Ag]	daily average	≤ .6 lb/d	all year	002
Silver, total [as Ag]	daily maximum	≤ 1.24 lb/d	all year	002
Carbon tetrachloride	daily average	≤ .311 lb/d	all year	002
Carbon tetrachloride	daily maximum	≤ .656 lb/d	all year	002
1,2-Dichloroethane	daily average	≤ 1.17 lb/d	all year	002
1,2-Dichloroethane	daily maximum	≤ 3.64 lb/d	all year	002
Chloroform	daily average	≤ .964 lb/d	all year	002
Chloroform	daily maximum	≤ 2.11 lb/d	all year	002
Toluene	daily average	≤ .449 lb/d	all year	002
Toluene	daily maximum	≤ 1.38 lb/d	all year	002
Benzene	daily average	≤ .639 lb/d	all year	002
Benzene	daily maximum	≤ 2.34 lb/d	all year	002
Acenaphthylene	daily average	≤ .38 lb/d	all year	002
Acenaphthylene	daily maximum	≤ 1.01 lb/d	all year	002
Acenaphthene	daily average	≤ .38 lb/d	all year	002
Acenaphthene	daily maximum	≤ 1.01 lb/d	all year	002
Acrylonitrile	daily average	≤ 1.65 lb/d	all year	002
Acrylonitrile	daily maximum	≤ 4.17 lb/d	all year	002
Anthracene	daily average	≤ .38 lb/d	all year	002
Anthracene	daily maximum	≤ 1.01 lb/d	all year	002
Benzo[b]fluoranthene	daily average	≤ .397 lb/d	all year	002
Benzo[b]fluoranthene	daily maximum	≤ 1.05 lb/d	all year	002
Benzo[k]fluoranthene	daily average	≤ .38 lb/d	all year	002
Benzo[k]fluoranthene	daily maximum	≤ 1.01 lb/d	all year	002
Benzo[a]pyrene	daily average	≤ .0013 lb/d	all year	002
Benzo[a]pyrene	daily maximum	≤ .0027 lb/d	all year	002
Chlorobenzene	daily average	≤ .259 lb/d	all year	002
Chlorobenzene	daily maximum	≤ .483 lb/d	all year	002
Chrysene	daily average	≤ .38 lb/d	all year	002
Chrysene	daily maximum	≤ 1.01 lb/d	all year	002
Diethyl phthalate	daily average	≤ 1.39 lb/d	all year	002
Diethyl phthalate	daily maximum	≤ 3.5 lb/d	all year	002
Dimethyl phthalate	daily average	≤ .328 lb/d	all year	002
Dimethyl phthalate	daily maximum	≤ .811 lb/d	all year	002
Ethylbenzene	daily average	≤ .552 lb/d	all year	002
Ethylbenzene	daily maximum	≤ 1.86 lb/d	all year	002
Fluoranthene	daily average	≤ .432 lb/d	all year	002
Fluoranthene	daily maximum	≤ 1.17 lb/d	all year	002
Fluorene	daily average	≤ .38 lb/d	all year	002
Fluorene	daily maximum	≤ 1.01 lb/d	all year	002
Hexachlorobutadiene	daily average	≤ .11 lb/d	all year	002
Hexachlorobutadiene	daily maximum	≤ .24 lb/d	all year	002
Hexachloroethane	daily average	≤ .363 lb/d	all year	002
Hexachloroethane	daily maximum	≤ .932 lb/d	all year	002
Methyl chloride [Chloromethane]	daily average	≤ 1.48 lb/d	all year	002
Methyl chloride [Chloromethane]	daily maximum	≤ 3.28 lb/d	all year	002
Methylene chloride	daily average	≤ .691 lb/d	all year	002
Methylene chloride	daily maximum	≤ 1.53 lb/d	all year	002
Nitrobenzene	daily average	≤ .466 lb/d	all year	002
Nitrobenzene	daily maximum	≤ 1.17 lb/d	all year	002
Phenanthrene	daily average	≤ .38 lb/d	all year	002
Phenanthrene	daily maximum	≤ 1.01 lb/d	all year	002
Pyrene	daily average	≤ .432 lb/d	all year	002
Pyrene	daily maximum	≤ 1.15 lb/d	all year	002
Tetrachloroethylene	daily average	≤ .38 lb/d	all year	002
Tetrachloroethylene	daily maximum	≤ .96 lb/d	all year	002
1,1-Dichloroethane	daily average	≤ .38 lb/d	all year	002
1,1-Dichloroethane	daily maximum	≤ 1.01 lb/d	all year	002
1,1-Dichloroethylene	daily average	≤ .276 lb/d	all year	002
1,1-Dichloroethylene	daily maximum	≤ .432 lb/d	all year	002
1,1,1-Trichloroethane	daily average	≤ .363 lb/d	all year	002
1,1,1-Trichloroethane	daily maximum	≤ .932 lb/d	all year	002
1,1,2-Trichloroethane	daily average	≤ .363 lb/d	all year	002
1,1,2-Trichloroethane	daily maximum	≤ .932 lb/d	all year	002
Benzo[a]anthracene	daily average	≤ .013 lb/d	all year	002
Benzo[a]anthracene	daily maximum	≤ .027 lb/d	all year	002
1,2-Dichlorobenzene	daily average	≤ 1.32 lb/d	all year	002
1,2-Dichlorobenzene	daily maximum	≤ 2.81 lb/d	all year	002
1,2-Dichloropropane	daily average	≤ 2.64 lb/d	all year	002
1,2-Dichloropropane	daily maximum	≤ 3.97 lb/d	all year	002
trans-1,2-Dichloroethylene	daily average	≤ .363 lb/d	all year	002
trans-1,2-Dichloroethylene	daily maximum	≤ .932 lb/d	all year	002
1,2,4-Trichlorobenzene	daily average	≤ 1.17 lb/d	all year	002
1,2,4-Trichlorobenzene	daily maximum	≤ 2.41 lb/d	all year	002
1,3-Dichlorobenzene	daily average	≤ .535 lb/d	all year	002
1,3-Dichlorobenzene	daily maximum	≤ .76 lb/d	all year	002
1,4-Dichlorobenzene	daily average	≤ .259 lb/d	all year	002
1,4-Dichlorobenzene	daily maximum	≤ .483 lb/d	all year	002
2-Chlorophenol	daily average	≤ .535 lb/d	all year	002
2-Chlorophenol	daily maximum	≤ 1.69 lb/d	all year	002
2-Nitrophenol	daily average	≤ .708 lb/d	all year	002
2-Nitrophenol	daily maximum	≤ 1.19 lb/d	all year	002
2,4-Dichlorophenol	daily average	≤ .673 lb/d	all year	002
2,4-Dichlorophenol	daily maximum	≤ 1.93 lb/d	all year	002
2,4-Dimethylphenol	daily average	≤ .311 lb/d	all year	002
2,4-Dimethylphenol	daily maximum	≤ .622 lb/d	all year	002
2,4-Dinitrotoluene	daily average	≤ 1.95 lb/d	all year	002
2,4-Dinitrotoluene	daily maximum	≤ 4.92 lb/d	all year	002
2,4-Dinitrophenol	daily average	≤ 1.22 lb/d	all year	002
2,4-Dinitrophenol	daily maximum	≤ 2.12 lb/d	all year	002
2,6-Dinitrotoluene	daily average	≤ 4.4 lb/d	all year	002
2,6-Dinitrotoluene	daily maximum	≤ 11 lb/d	all year	002
4-Nitrophenol	daily average	≤ 1.24 lb/d	all year	002
4-Nitrophenol	daily maximum	≤ 2.14 lb/d	all year	002
4,6-Dinitro-o-cresol	daily average	≤ 1.34 lb/d	all year	002
4,6-Dinitro-o-cresol	daily maximum	≤ 4.78 lb/d	all year	002
Phenol	daily average	≤ .259 lb/d	all year	002
Phenol	daily maximum	≤ .449 lb/d	all year	002
Naphthalene	daily average	≤ .38 lb/d	all year	002
Naphthalene	daily maximum	≤ 1.01 lb/d	all year	002
Di[2-ethylhexyl] phthalate [DEHP]	daily average	≤ 1.77 lb/d	all year	002
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ 4.81 lb/d	all year	002
Di-n-butyl phthalate	daily average	≤ .466 lb/d	all year	002
Di-n-butyl phthalate	daily maximum	≤ .984 lb/d	all year	002
Vinyl chloride	daily average	≤ 1.79 lb/d	all year	002
Vinyl chloride	daily maximum	≤ 4.62 lb/d	all year	002
Trichloroethylene	daily average	≤ .363 lb/d	all year	002
Trichloroethylene	daily maximum	≤ .932 lb/d	all year	002
Hexachlorobenzene	daily average	≤ .00035 lb/d	all year	002
Hexachlorobenzene	daily maximum	≤ .00074 lb/d	all year	002
Flow, in conduit or thru treatment plant	daily average	≤ 5.5 MGD	all year	002
Flow, in conduit or thru treatment plant	daily maximum	≤ 7.5 MGD	all year	002
1,3-Dichloropropylene	daily average	≤ .501 lb/d	all year	002
1,3-Dichloropropylene	daily maximum	≤ .76 lb/d	all year	002
pH range excursions, > 60 minutes	monthly total	≤ 0 occur/mo	all year	002
pH range excursions, monthly total accum	monthly total	≤ 446 min	all year	002
Chloroethane	daily average	≤ 1.79 lb/d	all year	002
Chloroethane	daily maximum	≤ 4.62 lb/d	all year	002
pH	minimum	≥ 6 SU	all year	003
pH	maximum	≤ 9 SU	all year	003
Oil & Grease	daily maximum	≤ 15 mg/L	all year	003
Carbon, tot organic [TOC]	daily maximum	≤ 75 mg/L	all year	003
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year	003
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	003
pH	minimum	≥ 6 SU	all year	004
pH	maximum	≤ 9 SU	all year	004
Oil & Grease	daily maximum	≤ 15 mg/L	all year	004
Carbon, tot organic [TOC]	daily maximum	≤ 75 mg/L	all year	004
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year	004
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	004
pH	minimum	≥ 6 SU	all year	005
pH	maximum	≤ 9 SU	all year	005
Oil & Grease	daily maximum	≤ 15 mg/L	all year	005
Carbon, tot organic [TOC]	daily maximum	≤ 75 mg/L	all year	005
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year	005
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	005
pH	minimum	≥ 6 SU	all year	006
pH	maximum	≤ 9 SU	all year	006
Oil & Grease	daily maximum	≤ 15 mg/L	all year	006
Carbon, tot organic [TOC]	daily maximum	≤ 75 mg/L	all year	006
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year	006
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	006
pH	minimum	≥ 6 SU	all year	007
pH	maximum	≤ 9 SU	all year	007
Oil & Grease	daily maximum	≤ 15 mg/L	all year	007
Carbon, tot organic [TOC]	daily maximum	≤ 75 mg/L	all year	007
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year	007
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	007
pH	minimum	≥ 6 SU	all year	008
pH	maximum	≤ 9 SU	all year	008
Oil & Grease	daily maximum	≤ 15 mg/L	all year	008
Carbon, tot organic [TOC]	daily maximum	≤ 75 mg/L	all year	008
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year	008
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	008
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)	7-day minimum	report only (pass=0;fail=1)	all year	TX2
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)	average	report only (pass=0;fail=1)	all year	TX2
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia	7-day minimum	report only (pass=0;fail=1)	all year	TX2
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia	monthly average minimum	report only (pass=0;fail=1)	all year	TX2
NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	7-day minimum	report only (%)	all year	TX2
NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	average	report only (%)	all year	TX2
NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia	7-day minimum	report only (%)	all year	TX2
NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia	monthly average minimum	report only (%)	all year	TX2
NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	7-day minimum	report only (%)	all year	TX2
NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	average	report only (%)	all year	TX2
NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia	7-day minimum	report only (%)	all year	TX2
NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia	monthly average minimum	report only (%)	all year	TX2
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	7-day minimum	report only (pass=0;fail=1)	all year	TX2
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	monthly average minimum	report only (pass=0;fail=1)	all year	TX2
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia	7-day minimum	report only (pass=0;fail=1)	all year	TX2
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia	monthly average minimum	report only (pass=0;fail=1)	all year	TX2
LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	7-day minimum	report only (%)	all year	TX2
LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	monthly average minimum	report only (%)	all year	TX2
LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia	7-day minimum	report only (%)	all year	TX2
LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia	monthly average minimum	report only (%)	all year	TX2
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)	7-day minimum	report only (%)	all year	TX2
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)	monthly average minimum	report only (%)	all year	TX2
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia	7-day minimum	report only (%)	all year	TX2
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia	monthly average minimum	report only (%)	all year	TX2
LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)	single sample	report only (pass=0;fail=1)	all year	TXB
LC50 Pass/Fail Static 24Hr Acute Menidia menidia	single sample	report only (pass=0;fail=1)	all year	TXB

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/TX0004961 · MCP: https://passage-data.com/mcp