Dallas, City of — NPDES permit TX0133531: limits, due date and EPA's record

Sewage treatment plant, Dallas, Texas. NPDES permit TX0133531, in force until Mar 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (21)

Parameter	Statistic	Limit	Months	Outfall
Oxygen demand, chem. [high level] [COD]	daily maximum	≤ 150 mg/L	all year	001
pH	minimum	≥ 6 SU	all year	001
pH	maximum	≤ 9 SU	all year	001
Oil & Grease	daily maximum	≤ 15 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
E. coli	daily maximum	≤ 399 MPN/100mL	all year	001
Oxygen demand, chem. [high level] [COD]	daily maximum	≤ 200 mg/L	all year	002
pH	minimum	≥ 6 SU	all year	002
pH	maximum	≤ 9 SU	all year	002
Oil & Grease	daily maximum	≤ 15 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
E. coli	daily maximum	report only (MPN/100mL)	all year	002
Oxygen demand, chem. [high level] [COD]	daily maximum	≤ 200 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
E. coli	daily maximum	report only (MPN/100mL)	all year	004

Your permit document is the final word. As JSON: /api/v1/permits/TX0133531 · MCP: https://passage-data.com/mcp