Gulf Coast Authority — NPDES permit TX0005380: limits, due date and EPA's record

Sewerage Systems, major discharger, Pasadena, Texas. NPDES permit TX0005380, in force until Mar 30, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (214)

Parameter	Statistic	Limit	Months	Outfall
pH	minimum	≥ 6 SU	all year	001
pH	maximum	≤ 9 SU	all year	001
Solids, total suspended	daily average	≤ 11293 lb/d	all year	001
Solids, total suspended	daily maximum	≤ 31315 lb/d	all year	001
Oil & Grease	daily average	≤ 2707 lb/d	all year	001
Oil & Grease	daily maximum	≤ 4210 lb/d	all year	001
Nitrogen, ammonia total [as N]	daily average	≤ 1127 lb/d	all year	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 2082 lb/d	all year	001
Carbon, tot organic [TOC]	daily average	≤ 22030 lb/d	all year	001
Carbon, tot organic [TOC]	daily maximum	≤ 30542 lb/d	all year	001
Cyanide, free [amenable to chlorination]	daily average	≤ 1.46 lb/d	all year	001
Cyanide, free [amenable to chlorination]	daily maximum	≤ 3.1 lb/d	all year	001
Arsenic, total [as As]	daily average	≤ .1 mg/L	all year	001
Arsenic, total [as As]	daily maximum	≤ .2 mg/L	all year	001
Cadmium, total [as Cd]	daily average	≤ .008 mg/L	all year	001
Cadmium, total [as Cd]	daily maximum	≤ .013 mg/L	all year	001
Chromium, total [as Cr]	daily average	≤ 45 lb/d	all year	001
Chromium, total [as Cr]	daily maximum	≤ 87.4 lb/d	all year	001
Cobalt, total [as Co]	daily average	≤ .176 mg/L	all year	001
Cobalt, total [as Co]	daily maximum	≤ .547 mg/L	all year	001
Copper, total [as Cu]	daily average	≤ 4 lb/d	all year	001
Copper, total [as Cu]	daily maximum	≤ 8.48 lb/d	all year	001
Lead, total [as Pb]	daily average	≤ 28.2 lb/d	all year	001
Lead, total [as Pb]	daily maximum	≤ 60 lb/d	all year	001
Nickel, total [as Ni]	daily average	≤ 26.7 lb/d	all year	001
Nickel, total [as Ni]	daily maximum	≤ 56.5 lb/d	all year	001
Silver, total [as Ag]	daily average	≤ 1.21 lb/d	all year	001
Silver, total [as Ag]	daily maximum	≤ 2.57 lb/d	all year	001
Zinc, total [as Zn]	daily average	≤ 41 lb/d	all year	001
Zinc, total [as Zn]	daily maximum	≤ 86.8 lb/d	all year	001
Tin, total [as Sn]	daily average	≤ .132 mg/L	all year	001
Tin, total [as Sn]	daily maximum	≤ .268 mg/L	all year	001
Carbon tetrachloride	daily average	≤ 3.62 lb/d	all year	001
Carbon tetrachloride	daily maximum	≤ 8.53 lb/d	all year	001
1,2-Dichloroethane	daily average	≤ 9.73 lb/d	all year	001
1,2-Dichloroethane	daily maximum	≤ 30.4 lb/d	all year	001
Bromoform	daily average	≤ 49 lb/d	all year	001
Bromoform	daily maximum	≤ 198 lb/d	all year	001
Dibromochloromethane	daily average	≤ 9.26 lb/d	all year	001
Dibromochloromethane	daily maximum	≤ 14.7 lb/d	all year	001
Chloroform	daily average	≤ 34.2 lb/d	all year	001
Chloroform	daily maximum	≤ 40.3 lb/d	all year	001
Toluene	daily average	≤ 3.27 lb/d	all year	001
Toluene	daily maximum	≤ 9.91 lb/d	all year	001
Benzene	daily average	≤ 4.84 lb/d	all year	001
Benzene	daily maximum	≤ 17 lb/d	all year	001
Acenaphthylene	daily average	≤ 2.71 lb/d	all year	001
Acenaphthylene	daily maximum	≤ 7.23 lb/d	all year	001
Acenaphthene	daily average	≤ 2.71 lb/d	all year	001
Acenaphthene	daily maximum	≤ 7.23 lb/d	all year	001
Acrylonitrile	daily average	≤ 12 lb/d	all year	001
Acrylonitrile	daily maximum	≤ 30.1 lb/d	all year	001
Anthracene	daily average	≤ 2.71 lb/d	all year	001
Anthracene	daily maximum	≤ 7.23 lb/d	all year	001
Benzo[b]fluoranthene	daily average	≤ 2.83 lb/d	all year	001
Benzo[b]fluoranthene	daily maximum	≤ 7.46 lb/d	all year	001
Benzo[k]fluoranthene	daily average	≤ 2.71 lb/d	all year	001
Benzo[k]fluoranthene	daily maximum	≤ 7.23 lb/d	all year	001
Benzo[a]pyrene	daily average	≤ .014 lb/d	all year	001
Benzo[a]pyrene	daily maximum	≤ .03 lb/d	all year	001
Bis[2-chloroisopropyl] ether	daily average	≤ 34 lb/d	all year	001
Bis[2-chloroisopropyl] ether	daily maximum	≤ 85.6 lb/d	all year	001
Butyl benzyl phthalate	daily average	≤ .07 mg/L	all year	001
Butyl benzyl phthalate	daily maximum	≤ .15 mg/L	all year	001
Chlorobenzene	daily average	≤ 3.28 lb/d	all year	001
Chlorobenzene	daily maximum	≤ 7.39 lb/d	all year	001
Chrysene	daily average	≤ 2.71 lb/d	all year	001
Chrysene	daily maximum	≤ 7.23 lb/d	all year	001
Diethyl phthalate	daily average	≤ 9.72 lb/d	all year	001
Diethyl phthalate	daily maximum	≤ 24.3 lb/d	all year	001
Dimethyl phthalate	daily average	≤ 2.37 lb/d	all year	001
Dimethyl phthalate	daily maximum	≤ 5.86 lb/d	all year	001
Ethylbenzene	daily average	≤ 5.21 lb/d	all year	001
Ethylbenzene	daily maximum	≤ 16.5 lb/d	all year	001
Fluoranthene	daily average	≤ 3.16 lb/d	all year	001
Fluoranthene	daily maximum	≤ 8.45 lb/d	all year	001
Fluorene	daily average	≤ 2.71 lb/d	all year	001
Fluorene	daily maximum	≤ 7.23 lb/d	all year	001
Hexachlorobutadiene	daily average	≤ 1.25 lb/d	all year	001
Hexachlorobutadiene	daily maximum	≤ 2.65 lb/d	all year	001
Hexachloroethane	daily average	≤ 4.56 lb/d	all year	001
Hexachloroethane	daily maximum	≤ 15 lb/d	all year	001
Methyl chloride [Chloromethane]	daily average	≤ 11 lb/d	all year	001
Methyl chloride [Chloromethane]	daily maximum	≤ 24.9 lb/d	all year	001
Methylene chloride	daily average	≤ 4.95 lb/d	all year	001
Methylene chloride	daily maximum	≤ 12 lb/d	all year	001
Nitrobenzene	daily average	≤ 27.9 lb/d	all year	001
Nitrobenzene	daily maximum	≤ 78.7 lb/d	all year	001
Phenanthrene	daily average	≤ 2.01 lb/d	all year	001
Phenanthrene	daily maximum	≤ 4.25 lb/d	all year	001
Pyrene	daily average	≤ 3.06 lb/d	all year	001
Pyrene	daily maximum	≤ 8.15 lb/d	all year	001
Tetrachloroethylene	daily average	≤ 3.08 lb/d	all year	001
Tetrachloroethylene	daily maximum	≤ 8.19 lb/d	all year	001
1,1-Dichloroethane	daily average	≤ 2.74 lb/d	all year	001
1,1-Dichloroethane	daily maximum	≤ 7.36 lb/d	all year	001
1,1-Dichloroethylene	daily average	≤ 2.06 lb/d	all year	001
1,1-Dichloroethylene	daily maximum	≤ 3.51 lb/d	all year	001
1,1,1-Trichloroethane	daily average	≤ 2.63 lb/d	all year	001
1,1,1-Trichloroethane	daily maximum	≤ 6.79 lb/d	all year	001
1,1,2-Trichloroethane	daily average	≤ 2.74 lb/d	all year	001
1,1,2-Trichloroethane	daily maximum	≤ 7.55 lb/d	all year	001
Benzo[a]anthracene	daily average	≤ .142 lb/d	all year	001
Benzo[a]anthracene	daily maximum	≤ .3 lb/d	all year	001
1,2-Dichlorobenzene	daily average	≤ 10.09 lb/d	all year	001
1,2-Dichlorobenzene	daily maximum	≤ 27.3 lb/d	all year	001
1,2-Dichloropropane	daily average	≤ 19.6 lb/d	all year	001
1,2-Dichloropropane	daily maximum	≤ 35 lb/d	all year	001
trans-1,2-Dichloroethylene	daily average	≤ 2.67 lb/d	all year	001
trans-1,2-Dichloroethylene	daily maximum	≤ 6.87 lb/d	all year	001
1,2,4-Trichlorobenzene	daily average	≤ 9.9 lb/d	all year	001
1,2,4-Trichlorobenzene	daily maximum	≤ 24.7 lb/d	all year	001
1,3-Dichlorobenzene	daily average	≤ 5.09 lb/d	all year	001
1,3-Dichlorobenzene	daily maximum	≤ 9.21 lb/d	all year	001
1,4-Dichlorobenzene	daily average	≤ 3.28 lb/d	all year	001
1,4-Dichlorobenzene	daily maximum	≤ 7.39 lb/d	all year	001
2-Chlorophenol	daily average	≤ 3.86 lb/d	all year	001
2-Chlorophenol	daily maximum	≤ 12.2 lb/d	all year	001
2-Nitrophenol	daily average	≤ 5.38 lb/d	all year	001
2-Nitrophenol	daily maximum	≤ 10.4 lb/d	all year	001
2,4-Dichlorophenol	daily average	≤ 4.86 lb/d	all year	001
2,4-Dichlorophenol	daily maximum	≤ 14 lb/d	all year	001
2,4-Dimethylphenol	daily average	≤ 2.26 lb/d	all year	001
2,4-Dimethylphenol	daily maximum	≤ 4.61 lb/d	all year	001
2,4-Dinitrotoluene	daily average	≤ 14.1 lb/d	all year	001
2,4-Dinitrotoluene	daily maximum	≤ 35.6 lb/d	all year	001
2,4-Dinitrophenol	daily average	≤ 21.5 lb/d	all year	001
2,4-Dinitrophenol	daily maximum	≤ 61.6 lb/d	all year	001
2,4,6-Trichlorophenol	daily average	≤ 17.4 lb/d	all year	001
2,4,6-Trichlorophenol	daily maximum	≤ 25.5 lb/d	all year	001
2,6-Dinitrotoluene	daily average	≤ 31.8 lb/d	all year	001
2,6-Dinitrotoluene	daily maximum	≤ 80 lb/d	all year	001
4-Nitrophenol	daily average	≤ 9.99 lb/d	all year	001
4-Nitrophenol	daily maximum	≤ 20.5 lb/d	all year	001
4,6-Dinitro-o-cresol	daily average	≤ 9.74 lb/d	all year	001
4,6-Dinitro-o-cresol	daily maximum	≤ 34.6 lb/d	all year	001
Phenol	daily average	≤ 53 lb/d	all year	001
Phenol	daily maximum	≤ 175 lb/d	all year	001
Naphthalene	daily average	≤ 2.71 lb/d	all year	001
Naphthalene	daily maximum	≤ 7.23 lb/d	all year	001
Surfactants [MBAS]	daily average	≤ 284 lb/d	all year	001
Surfactants [MBAS]	daily maximum	≤ 568 lb/d	all year	001
Bromomethane	daily average	≤ 35.5 lb/d	all year	001
Bromomethane	daily maximum	≤ 95.1 lb/d	all year	001
Bromodichloromethane, effluent	daily average	≤ 27.7 lb/d	all year	001
Bromodichloromethane, effluent	daily maximum	≤ 43.3 lb/d	all year	001
Di[2-ethylhexyl] phthalate [DEHP]	daily average	≤ 12.9 lb/d	all year	001
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ 35 lb/d	all year	001
Di-n-butyl phthalate	daily average	≤ 3.29 lb/d	all year	001
Di-n-butyl phthalate	daily maximum	≤ 6.96 lb/d	all year	001
Vinyl chloride	daily average	≤ 12.9 lb/d	all year	001
Vinyl chloride	daily maximum	≤ 32.4 lb/d	all year	001
Trichloroethylene	daily average	≤ 2.68 lb/d	all year	001
Trichloroethylene	daily maximum	≤ 6.91 lb/d	all year	001
Hexachlorobenzene	daily average	≤ .0039 lb/d	all year	001
Hexachlorobenzene	daily maximum	≤ .0082 lb/d	all year	001
Sodium salt of acifluorofen	daily average	≤ .5 mg/L	all year	001
Sodium salt of acifluorofen	daily maximum	≤ .5 mg/L	all year	001
Flow, in conduit or thru treatment plant	daily average	≤ 30 MGD	all year	001
Flow, in conduit or thru treatment plant	daily maximum	≤ 40 MGD	all year	001
Chlorine, total residual	monthly minimum	≥ .5 mg/L	all year	001
Chlorine, total residual	monthly maximum	≤ 4 mg/L	all year	001
1,3-Dichloropropylene	daily average	≤ 5.47 lb/d	all year	001
1,3-Dichloropropylene	daily maximum	≤ 13.8 lb/d	all year	001
o-Cresol	daily average	≤ 92.5 lb/d	all year	001
o-Cresol	daily maximum	≤ 316 lb/d	all year	001
Enterococci	daily average	≤ 35 CFU/100mL	all year	001
Enterococci	daily maximum	≤ 104 CFU/100mL	all year	001
Mercury, total [as Hg]	daily average	≤ .142 lb/d	all year	001
Mercury, total [as Hg]	daily maximum	≤ .301 lb/d	all year	001
Pyridine	daily average	≤ 30 lb/d	all year	001
Pyridine	daily maximum	≤ 61 lb/d	all year	001
p-Cresol	daily average	≤ 33.8 lb/d	all year	001
p-Cresol	daily maximum	≤ 115 lb/d	all year	001
n-Decane	daily average	≤ .349 mg/L	all year	001
n-Decane	daily maximum	≤ .758 mg/L	all year	001
Carbazole	daily average	≤ .22 mg/L	all year	001
Carbazole	daily maximum	≤ .478 mg/L	all year	001
n-Octadecane	daily average	≤ .241 mg/L	all year	001
n-Octadecane	daily maximum	≤ .471 mg/L	all year	001
2-Butanone	daily average	≤ 305 lb/d	all year	001
2-Butanone	daily maximum	≤ 793 lb/d	all year	001
BOD, carbonaceous [5 day, 20 C]	daily average	≤ 6308 lb/d	all year	001
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 15238 lb/d	all year	001
Acetone	daily average	≤ 1314 lb/d	all year	001
Acetone	daily maximum	≤ 4982 lb/d	all year	001
Acetophenone	daily average	≤ 9.26 lb/d	all year	001
Acetophenone	daily maximum	≤ 18.8 lb/d	all year	001
Paraquat	daily average	≤ .5 mg/L	all year	001
Paraquat	daily maximum	≤ .5 mg/L	all year	001
Chloroethane	daily average	≤ 13 lb/d	all year	001
Chloroethane	daily maximum	≤ 33.7 lb/d	all year	001
Whole effluent toxicity - retest #1	7-day minimum	report only (pass=0;fail=1)	all year	TX1
Whole effluent toxicity - retest #1	monthly average minimum	report only (pass=0;fail=1)	all year	TX1
Whole effluent toxicity - retest #2	7-day minimum	report only (pass=0;fail=1)	all year	TX1
Whole effluent toxicity - retest #2	monthly average minimum	report only (pass=0;fail=1)	all year	TX1
IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)	7-day minimum	report only (pass=0;fail=1)	all year	TX1
IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)	monthly average minimum	report only (pass=0;fail=1)	all year	TX1
IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Menidia beryllina	7-day minimum	report only (pass=0;fail=1)	all year	TX1
IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Menidia beryllina	monthly average minimum	report only (pass=0;fail=1)	all year	TX1
IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (M. bahia)	7-day minimum	report only (pass=0;fail=1)	all year	TX1
IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (M. bahia)	monthly average minimum	report only (pass=0;fail=1)	all year	TX1
IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina	7-day minimum	report only (pass=0;fail=1)	all year	TX1
IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina	monthly average minimum	report only (pass=0;fail=1)	all year	TX1
IC25 Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	7-day minimum	report only (%)	all year	TX1
IC25 Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	monthly average minimum	report only (%)	all year	TX1
IC25 Lethal Static Renewal 7 Day Chronic Menidia beryllina	7-day minimum	report only (%)	all year	TX1
IC25 Lethal Static Renewal 7 Day Chronic Menidia beryllina	monthly average minimum	report only (%)	all year	TX1
IC25 Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	7-day minimum	report only (%)	all year	TX1
IC25 Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	monthly average minimum	report only (%)	all year	TX1
IC25 Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina	7-day minimum	report only (%)	all year	TX1
IC25 Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina	monthly average minimum	report only (%)	all year	TX1
LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)	single sample	report only (pass=0;fail=1)	all year	TXA
LC50 Pass/Fail Static 24Hr Acute Menidia beryllina	single sample	report only (pass=0;fail=1)	all year	TXA

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/TX0005380 · MCP: https://passage-data.com/mcp