Public Utilities Board of the City of Brownsville Texas — NPDES permit TX0105651: limits, due date and EPA's record

Electric Services, Brownsville, Texas. NPDES permit TX0105651, in force until Oct 23, 2030. Last 12 months: over a limit once (last June 2026). Source: EPA ECHO, Oct 22, 2026.

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

Period ending	Parameter	Reported	Limit	Over by
June 2026	Solids, total suspended, daily average	42.5 mg/L	≤ 30 mg/L	42%

Limits in force (50)

Parameter	Statistic	Limit	Months	Outfall
Temperature, water deg. fahrenheit	daily average	≤ 115 deg F	all year	001
Temperature, water deg. fahrenheit	daily maximum	≤ 120 deg F	all year	001
pH	minimum	≥ 6 SU	all year	001
pH	maximum	≤ 9 SU	all year	001
Chloride [as Cl]	daily average	report only (mg/L)	all year	001
Chloride [as Cl]	daily maximum	report only (mg/L)	all year	001
Sulfate, total [as SO4]	daily average	≤ 1750 mg/L	all year	001
Sulfate, total [as SO4]	daily maximum	≤ 3710 mg/L	all year	001
Sulfate, total [as SO4]	daily average	≤ 1060 lb/d	all year	001
Sulfate, total [as SO4]	daily maximum	≤ 2242 lb/d	all year	001
Copper, total [as Cu]	daily average	≤ .11 mg/L	all year	001
Copper, total [as Cu]	daily maximum	≤ .22 mg/L	all year	001
Copper, total [as Cu]	daily average	≤ .34 lb/d	all year	001
Copper, total [as Cu]	daily maximum	≤ .68 lb/d	all year	001
Aluminum, total [as Al]	daily average	≤ .78 mg/L	all year	001
Aluminum, total [as Al]	daily maximum	≤ 1.64 mg/L	all year	001
Aluminum, total [as Al]	daily average	≤ 1.66 lb/d	all year	001
Aluminum, total [as Al]	daily maximum	≤ 3.51 lb/d	all year	001
Flow, in conduit or thru treatment plant	daily average	≤ .39 MGD	all year	001
Flow, in conduit or thru treatment plant	daily maximum	≤ .39 MGD	all year	001
Chlorine, free available	daily average	≤ .2 mg/L	all year	001
Chlorine, free available	daily maximum	≤ .5 mg/L	all year	001
Chlorine, free available	daily average	≤ .05 lb/d	all year	001
Chlorine, free available	daily maximum	≤ .14 lb/d	all year	001
Solids, total dissolved	daily average	≤ 4400 mg/L	all year	001
Solids, total dissolved	daily maximum	≤ 9328 mg/L	all year	001
Solids, total dissolved	daily average	≤ 13585 lb/d	all year	001
Solids, total dissolved	daily maximum	≤ 28801 lb/d	all year	001
Oxygen demand, chem. [high level] [COD]	daily average	report only (mg/L)	all year	002
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
Solids, total suspended	daily average	≤ 30 mg/L	all year	002
Solids, total suspended	daily maximum	≤ 100 mg/L	all year	002
Oil & Grease	daily average	≤ 15 mg/L	all year	002
Oil & Grease	daily maximum	≤ 20 mg/L	all year	002
Aluminum, total [as Al]	daily average	report only (mg/L)	all year	002
Aluminum, total [as Al]	daily maximum	report only (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
Solids, total dissolved	daily average	report only (mg/L)	all year	002
Solids, total dissolved	daily maximum	report only (mg/L)	all year	002
pH	minimum	≥ 6 SU	all year	102
pH	maximum	≤ 9 SU	all year	102
Solids, total suspended	daily average	≤ 30 mg/L	all year	102
Solids, total suspended	daily maximum	≤ 100 mg/L	all year	102
Oil & Grease	daily average	≤ 15 mg/L	all year	102
Oil & Grease	daily maximum	≤ 20 mg/L	all year	102
Flow, in conduit or thru treatment plant	daily average	report only (MGD)	all year	102
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	102

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/TX0105651 · MCP: https://passage-data.com/mcp