Arkema Inc — NPDES permit TX0007064: limits, due date and EPA's record

Industrial Organic Chemicals, major discharger, Houston, Texas. NPDES permit TX0007064, in force until Jan 15, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (57)

Parameter	Statistic	Limit	Months	Outfall
Temperature, water deg. fahrenheit	daily maximum	≤ 110 deg F	all year	001
BOD, 5-day, 20 deg. C	daily average	≤ 23 lb/d	all year	001
BOD, 5-day, 20 deg. C	daily maximum	≤ 53 lb/d	all year	001
Oxygen demand, chem. [high level] [COD]	daily average	report only (mg/L)	all year	001
Oxygen demand, chem. [high level] [COD]	daily maximum	≤ 150 mg/L	all year	001
pH	minimum	≥ 5 SU	all year	001
pH	maximum	≤ 11 SU	all year	001
Solids, total suspended	daily average	≤ 51 lb/d	all year	001
Solids, total suspended	daily maximum	≤ 120 lb/d	all year	001
Oil & Grease	daily maximum	≤ 15 mg/L	all year	001
Chlorobenzene	daily maximum	≤ .05 mg/L	all year	001
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ .01 mg/L	all year	001
Flow, in conduit or thru treatment plant	daily average	≤ .4 MGD	all year	001
Flow, in conduit or thru treatment plant	daily maximum	≤ .8 MGD	all year	001
Chlorine, total residual	daily maximum	≤ .1 mg/L	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
BOD, 5-day, 20 deg. C	daily average	≤ 10 mg/L	all year	002
BOD, 5-day, 20 deg. C	daily maximum	≤ 20 mg/L	all year	002
Oxygen demand, chem. [high level] [COD]	daily maximum	≤ 150 mg/L	all year	002
pH	minimum	≥ 6 SU	all year	002
pH	maximum	≤ 9 SU	all year	002
Solids, total suspended	daily average	report only (mg/L)	all year	002
Solids, total suspended	daily maximum	≤ 100 mg/L	all year	002
Oil & Grease	daily maximum	≤ 15 mg/L	all year	002
Chlorobenzene	daily maximum	≤ .05 mg/L	all year	002
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ .01 mg/L	all year	002
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year	002
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	002
Chlorine, total residual	daily maximum	≤ .1 mg/L	all year	002
Oxygen demand, chem. [high level] [COD]	daily maximum	≤ 150 mg/L	all year	003
pH	minimum	≥ 6 SU	all year	003
pH	maximum	≤ 9 SU	all year	003
Oil & Grease	daily maximum	≤ 15 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
Oxygen demand, chem. [high level] [COD]	daily maximum	≤ 150 mg/L	all year	004
pH	minimum	≥ 6 SU	all year	004
pH	maximum	≤ 9 SU	all year	004
Oil & Grease	daily maximum	≤ 15 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
Oxygen demand, chem. [high level] [COD]	daily maximum	≤ 150 mg/L	all year	005
pH	minimum	≥ 6 SU	all year	005
pH	maximum	≤ 9 SU	all year	005
Oil & Grease	daily maximum	≤ 15 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
BOD, 5-day, 20 deg. C	daily average	≤ 20 mg/L	all year	101
BOD, 5-day, 20 deg. C	daily maximum	≤ 45 mg/L	all year	101
Solids, total suspended	daily average	≤ 20 mg/L	all year	101
Solids, total suspended	daily maximum	≤ 45 mg/L	all year	101
Flow, in conduit or thru treatment plant	daily average	≤ .003 MGD	all year	101
Flow, in conduit or thru treatment plant	daily maximum	≤ .006 MGD	all year	101
Chlorine, total residual	monthly minimum	≥ 1 mg/L	all year	101
Enterococci	daily average	≤ 35 CFU/100mL	all year	101
Enterococci	daily maximum	≤ 104 CFU/100mL	all year	101

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/TX0007064 · MCP: https://passage-data.com/mcp