Stolthaven Houston, Inc. — NPDES permit TX0091855: limits, due date and EPA's record

Refuse Systems, major discharger, Houston, Texas. NPDES permit TX0091855, in force until May 10, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (239)

Parameter	Statistic	Limit	Months	Outfall
BOD, 5-day, 20 deg. C	daily average	≤ 53 mg/L	all year	001
BOD, 5-day, 20 deg. C	daily maximum	≤ 163 mg/L	all year	001
pH	minimum	≥ 6 SU	all year	001
pH	maximum	≤ 9 SU	all year	001
Solids, total suspended	daily average	≤ 30.6 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 127 mg/L	all year	001
Oil & Grease	daily average	≤ 10 mg/L	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
Arsenic, total [as As]	daily average	≤ .1 mg/L	all year	001
Arsenic, total [as As]	daily maximum	≤ .3 mg/L	all year	001
Cadmium, total [as Cd]	daily average	≤ .0102 mg/L	all year	001
Cadmium, total [as Cd]	daily maximum	≤ .0172 mg/L	all year	001
Chromium, total [as Cr]	daily average	≤ .323 mg/L	all year	001
Chromium, total [as Cr]	daily maximum	≤ .746 mg/L	all year	001
Cobalt, total [as Co]	daily average	≤ 18.8 mg/L	all year	001
Cobalt, total [as Co]	daily maximum	≤ 56.4 mg/L	all year	001
Copper, total [as Cu]	daily average	≤ .0151 mg/L	all year	001
Copper, total [as Cu]	daily maximum	≤ .0319 mg/L	all year	001
Lead, total [as Pb]	daily average	≤ .111 mg/L	all year	001
Lead, total [as Pb]	daily maximum	≤ .235 mg/L	all year	001
Zinc, total [as Zn]	daily average	≤ .246 mg/L	all year	001
Zinc, total [as Zn]	daily maximum	≤ .497 mg/L	all year	001
Tin, total [as Sn]	daily average	≤ .165 mg/L	all year	001
Tin, total [as Sn]	daily maximum	≤ .335 mg/L	all year	001
Carbon tetrachloride	daily average	≤ .05 mg/L	all year	001
Carbon tetrachloride	daily maximum	≤ .05 mg/L	all year	001
Chloroform	daily average	≤ .075 mg/L	all year	001
Chloroform	daily maximum	≤ .075 mg/L	all year	001
Toluene	daily average	≤ .028 mg/L	all year	001
Toluene	daily maximum	≤ .074 mg/L	all year	001
Benzene	daily average	≤ .057 mg/L	all year	001
Benzene	daily maximum	≤ .125 mg/L	all year	001
Acrylonitrile	daily average	≤ .05 mg/L	all year	001
Acrylonitrile	daily maximum	≤ .05 mg/L	all year	001
Butyl benzyl phthalate	daily average	≤ .0887 mg/L	all year	001
Butyl benzyl phthalate	daily maximum	≤ .188 mg/L	all year	001
Chlorobenzene	daily average	≤ .1 mg/L	all year	001
Chlorobenzene	daily maximum	≤ .1 mg/L	all year	001
Ethylbenzene	daily average	≤ .142 mg/L	all year	001
Ethylbenzene	daily maximum	≤ .275 mg/L	all year	001
Fluoranthene	daily average	≤ .0268 mg/L	all year	001
Fluoranthene	daily maximum	≤ .0537 mg/L	all year	001
Methylene chloride	daily average	≤ .036 mg/L	all year	001
Methylene chloride	daily maximum	≤ .05 mg/L	all year	001
Tetrachloroethylene	daily average	≤ .052 mg/L	all year	001
Tetrachloroethylene	daily maximum	≤ .164 mg/L	all year	001
1,1,1-Trichloroethane	daily average	≤ .022 mg/L	all year	001
1,1,1-Trichloroethane	daily maximum	≤ .05 mg/L	all year	001
1,1,2-Trichloroethane	daily average	≤ .032 mg/L	all year	001
1,1,2-Trichloroethane	daily maximum	≤ .075 mg/L	all year	001
2,4,6-Trichlorophenol	daily average	≤ .106 mg/L	all year	001
2,4,6-Trichlorophenol	daily maximum	≤ .155 mg/L	all year	001
Phenol	daily average	≤ .019 mg/L	all year	001
Phenol	daily maximum	≤ .047 mg/L	all year	001
Naphthalene	daily average	≤ .019 mg/L	all year	001
Naphthalene	daily maximum	≤ .047 mg/L	all year	001
Di[2-ethylhexyl] phthalate [DEHP]	daily average	≤ .101 mg/L	all year	001
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ .215 mg/L	all year	001
Trichloroethylene	daily average	≤ .026 mg/L	all year	001
Trichloroethylene	daily maximum	≤ .069 mg/L	all year	001
Phenols	daily maximum	≤ .7 mg/L	all year	001
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
o-Cresol	daily average	≤ .561 mg/L	all year	001
o-Cresol	daily maximum	≤ 1.92 mg/L	all year	001
Mercury, total [as Hg]	daily average	≤ .0002 mg/L	all year	001
Mercury, total [as Hg]	daily maximum	≤ .00042 mg/L	all year	001
Pyridine	daily average	≤ .182 mg/L	all year	001
Pyridine	daily maximum	≤ .37 mg/L	all year	001
p-Cresol	daily average	≤ .205 mg/L	all year	001
p-Cresol	daily maximum	≤ .698 mg/L	all year	001
n-Decane	daily average	≤ .437 mg/L	all year	001
n-Decane	daily maximum	≤ .948 mg/L	all year	001
Carbazole	daily average	≤ .276 mg/L	all year	001
Carbazole	daily maximum	≤ .598 mg/L	all year	001
n-Octadecane	daily average	≤ .302 mg/L	all year	001
n-Octadecane	daily maximum	≤ .589 mg/L	all year	001
Halogen, total organic	daily maximum	≤ 2 mg/L	all year	001
N-Nitrosodiethylamine	daily average	≤ .071 mg/L	all year	001
N-Nitrosodiethylamine	daily maximum	≤ .151 mg/L	all year	001
2-Butanone	daily average	≤ 1.85 mg/L	all year	001
2-Butanone	daily maximum	≤ 4.81 mg/L	all year	001
Dichlorobenzene	daily average	≤ .25 mg/L	all year	001
Dichlorobenzene	daily maximum	≤ .25 mg/L	all year	001
Acetone	daily average	≤ 7.97 mg/L	all year	001
Acetone	daily maximum	≤ 30.2 mg/L	all year	001
Acetophenone	daily average	≤ .0562 mg/L	all year	001
Acetophenone	daily maximum	≤ .114 mg/L	all year	001
Oxygen, dissolved [DO]	monthly minimum	≥ 4 mg/L	all year	003
pH	minimum	≥ 6 SU	all year	003
pH	maximum	≤ 9 SU	all year	003
Solids, total suspended	daily average	report only (mg/L)	all year	003
Solids, total suspended	daily maximum	report only (mg/L)	all year	003
Solids, total suspended	daily average	≤ 49 lb/d	all year	003
Solids, total suspended	daily maximum	≤ 119 lb/d	all year	003
Oil & Grease	daily average	report only (mg/L)	all year	003
Oil & Grease	daily maximum	report only (mg/L)	all year	003
Oil & Grease	daily average	≤ 16.8 lb/d	all year	003
Oil & Grease	daily maximum	≤ 30 lb/d	all year	003
Nitrogen, ammonia total [as N]	daily average	report only (mg/L)	all year	003
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	003
Nitrogen, ammonia total [as N]	daily average	≤ 5 lb/d	all year	003
Nitrogen, ammonia total [as N]	daily maximum	≤ 16.8 lb/d	all year	003
Carbon, tot organic [TOC]	daily average	report only (mg/L)	all year	003
Carbon, tot organic [TOC]	daily maximum	report only (mg/L)	all year	003
Carbon, tot organic [TOC]	daily average	≤ 250 lb/d	all year	003
Carbon, tot organic [TOC]	daily maximum	≤ 350 lb/d	all year	003
Cyanide, free [as free]	daily average	≤ .0087 mg/L	all year	003
Cyanide, free [as free]	daily maximum	≤ .018 mg/L	all year	003
Arsenic, total [as As]	daily average	≤ .1 mg/L	all year	003
Arsenic, total [as As]	daily maximum	≤ .2 mg/L	all year	003
Cadmium, total [as Cd]	daily average	≤ .0102 mg/L	all year	003
Cadmium, total [as Cd]	daily maximum	≤ .0172 mg/L	all year	003
Chromium, total [as Cr]	daily average	≤ .323 mg/L	all year	003
Chromium, total [as Cr]	daily maximum	≤ .746 mg/L	all year	003
Cobalt, total [as Co]	daily average	≤ 17.9 mg/L	all year	003
Cobalt, total [as Co]	daily maximum	≤ 53.6 mg/L	all year	003
Copper, total [as Cu]	daily average	≤ .024 mg/L	all year	003
Copper, total [as Cu]	daily maximum	≤ .0508 mg/L	all year	003
Lead, total [as Pb]	daily average	≤ .155 mg/L	all year	003
Lead, total [as Pb]	daily maximum	≤ .329 mg/L	all year	003
Zinc, total [as Zn]	daily average	≤ .154 mg/L	all year	003
Zinc, total [as Zn]	daily maximum	≤ .325 mg/L	all year	003
Tin, total [as Sn]	daily average	≤ .16 mg/L	all year	003
Tin, total [as Sn]	daily maximum	≤ .32 mg/L	all year	003
Carbon tetrachloride	daily average	≤ .05 mg/L	all year	003
Carbon tetrachloride	daily maximum	≤ .05 mg/L	all year	003
Chloroform	daily average	≤ .075 mg/L	all year	003
Chloroform	daily maximum	≤ .075 mg/L	all year	003
Toluene	daily average	≤ .028 mg/L	all year	003
Toluene	daily maximum	≤ .074 mg/L	all year	003
Benzene	daily average	≤ .057 mg/L	all year	003
Benzene	daily maximum	≤ .125 mg/L	all year	003
Acrylonitrile	daily average	≤ .05 mg/L	all year	003
Acrylonitrile	daily maximum	≤ .05 mg/L	all year	003
Butyl benzyl phthalate	daily average	≤ .085 mg/L	all year	003
Butyl benzyl phthalate	daily maximum	≤ .18 mg/L	all year	003
Chlorobenzene	daily average	≤ .1 mg/L	all year	003
Chlorobenzene	daily maximum	≤ .1 mg/L	all year	003
Ethylbenzene	daily average	≤ .142 mg/L	all year	003
Ethylbenzene	daily maximum	≤ .275 mg/L	all year	003
Fluoranthene	daily average	≤ .026 mg/L	all year	003
Fluoranthene	daily maximum	≤ .052 mg/L	all year	003
Methylene chloride	daily average	≤ .036 mg/L	all year	003
Methylene chloride	daily maximum	≤ .05 mg/L	all year	003
Tetrachloroethylene	daily average	≤ .052 mg/L	all year	003
Tetrachloroethylene	daily maximum	≤ .164 mg/L	all year	003
1,1,1-Trichloroethane	daily average	≤ .022 mg/L	all year	003
1,1,1-Trichloroethane	daily maximum	≤ .05 mg/L	all year	003
1,1,2-Trichloroethane	daily average	≤ .032 mg/L	all year	003
1,1,2-Trichloroethane	daily maximum	≤ .075 mg/L	all year	003
2,4,6-Trichlorophenol	daily average	≤ .1 mg/L	all year	003
2,4,6-Trichlorophenol	daily maximum	≤ .15 mg/L	all year	003
Phenol	daily average	≤ .019 mg/L	all year	003
Phenol	daily maximum	≤ .047 mg/L	all year	003
Naphthalene	daily average	≤ .019 mg/L	all year	003
Naphthalene	daily maximum	≤ .047 mg/L	all year	003
Di[2-ethylhexyl] phthalate [DEHP]	daily average	≤ .1 mg/L	all year	003
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ .21 mg/L	all year	003
Trichloroethylene	daily average	≤ .026 mg/L	all year	003
Trichloroethylene	daily maximum	≤ .069 mg/L	all year	003
Flow, in conduit or thru treatment plant	daily average	≤ .2016 MGD	all year	003
Flow, in conduit or thru treatment plant	daily maximum	≤ .2448 MGD	all year	003
o-Cresol	daily average	≤ .53 mg/L	all year	003
o-Cresol	daily maximum	≤ 1.83 mg/L	all year	003
Enterococci	daily average	≤ 35 CFU/100mL	all year	003
Enterococci	daily maximum	≤ 104 CFU/100mL	all year	003
Mercury, total [as Hg]	daily average	≤ .00085 mg/L	all year	003
Mercury, total [as Hg]	daily maximum	≤ .0018 mg/L	all year	003
Pyridine	daily average	≤ .17 mg/L	all year	003
Pyridine	daily maximum	≤ .35 mg/L	all year	003
p-Cresol	daily average	≤ .2 mg/L	all year	003
p-Cresol	daily maximum	≤ .66 mg/L	all year	003
n-Decane	daily average	≤ .42 mg/L	all year	003
n-Decane	daily maximum	≤ .9 mg/L	all year	003
Carbazole	daily average	≤ .26 mg/L	all year	003
Carbazole	daily maximum	≤ .57 mg/L	all year	003
n-Octadecane	daily average	≤ .29 mg/L	all year	003
n-Octadecane	daily maximum	≤ .56 mg/L	all year	003
Halogen, total organic	daily maximum	≤ 2 mg/L	all year	003
2-Butanone	daily average	≤ 1.76 mg/L	all year	003
2-Butanone	daily maximum	≤ 4.57 mg/L	all year	003
BOD, carbonaceous [5 day, 20 C]	daily average	report only (mg/L)	all year	003
BOD, carbonaceous [5 day, 20 C]	daily maximum	report only (mg/L)	all year	003
BOD, carbonaceous [5 day, 20 C]	daily average	≤ 16.8 lb/d	all year	003
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 42 lb/d	all year	003
Dichlorobenzene	daily average	≤ .25 mg/L	all year	003
Dichlorobenzene	daily maximum	≤ .25 mg/L	all year	003
Acetone	daily average	≤ 7.57 mg/L	all year	003
Acetone	daily maximum	≤ 28.7 mg/L	all year	003
Acetophenone	daily average	≤ .054 mg/L	all year	003
Acetophenone	daily maximum	≤ .11 mg/L	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	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
Whole effluent toxicity - retest #1	7-day minimum	report only (pass=0;fail=1)	all year	TX3
Whole effluent toxicity - retest #1	monthly average minimum	report only (pass=0;fail=1)	all year	TX3
Whole effluent toxicity - retest #2	7-day minimum	report only (pass=0;fail=1)	all year	TX3
Whole effluent toxicity - retest #2	monthly average minimum	report only (pass=0;fail=1)	all year	TX3
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	TX3
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)	monthly average minimum	report only (pass=0;fail=1)	all year	TX3
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllina	7-day minimum	report only (pass=0;fail=1)	all year	TX3
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia beryllina	monthly average minimum	report only (pass=0;fail=1)	all year	TX3
NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	7-day minimum	report only (%)	all year	TX3
NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	monthly average minimum	report only (%)	all year	TX3
NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllina	7-day minimum	report only (%)	all year	TX3
NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllina	monthly average minimum	report only (%)	all year	TX3
NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	7-day minimum	report only (%)	all year	TX3
NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	monthly average minimum	report only (%)	all year	TX3
NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina	7-day minimum	report only (%)	all year	TX3
NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina	monthly average minimum	report only (%)	all year	TX3
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	TX3
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	TX3
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina	7-day minimum	report only (pass=0;fail=1)	all year	TX3
Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia beryllina	monthly average minimum	report only (pass=0;fail=1)	all year	TX3
LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	7-day minimum	report only (%)	all year	TX3
LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)	monthly average minimum	report only (%)	all year	TX3
LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia beryllina	7-day minimum	report only (%)	all year	TX3
LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia beryllina	monthly average minimum	report only (%)	all year	TX3
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)	7-day minimum	report only (%)	all year	TX3
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)	monthly average minimum	report only (%)	all year	TX3
LOEC Sub-Lethal Growth Static Renewal 7 Day Chronic Menidia beryllina	7-day minimum	report only (%)	all year	TX3
LOEC Sub-Lethal Growth Static Renewal 7 Day Chronic Menidia beryllina	monthly average minimum	report only (%)	all year	TX3
Whole effluent toxicity - retest #1	single sample	report only (pass=0;fail=1)	all year	TXC
Whole effluent toxicity - retest #2	single sample	report only (pass=0;fail=1)	all year	TXC
Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia)	7-day minimum	≥ 100 %	all year	TXC
Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia)	monthly average minimum	≥ 100 %	all year	TXC
LC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)	single sample	report only (pass=0;fail=1)	all year	TXC
LC50 Pass/Fail Static 24Hr Acute Menidia beryllina	single sample	report only (pass=0;fail=1)	all year	TXC

New limits from Jun 1, 2027

Parameter	New limit	New or tighter	Median, last 12 months	× new limit
Zinc, total [as Zn], daily average	0.165 mg/L	tighter	0.005005 mg/L (4 values)	0.0303×
Zinc, total [as Zn], daily maximum	0.35 mg/L	tighter	0.005005 mg/L (4 values)	0.0143×

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/TX0091855 · MCP: https://passage-data.com/mcp