Houston Polymers Terminal LP — NPDES permit TX0139262: limits, due date and EPA's record

Sewerage Systems, La Porte, Texas. NPDES permit TX0139262, in force until May 21, 2030. Last 12 months: over a limit 4 times (last May 2026), 2 of 15 reports late. Source: EPA ECHO, Oct 22, 2026.

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

Period ending	Parameter	Reported	Limit	Over by
February 2026	BOD, carbonaceous [5 day, 20 C], daily average	12.775 mg/L	≤ 10 mg/L	28%
May 2026	E. coli, single grab sample	1046.2 MPN/100mL	≤ 399 MPN/100mL	162%
May 2026	Nitrogen, ammonia total [as N], daily average	4.49 mg/L	≤ 3 mg/L	50%
May 2026	Nitrogen, ammonia total [as N], single grab sample	17.6 mg/L	≤ 15 mg/L	17%

Limits in force (18)

Parameter	Statistic	Limit	Months
Oxygen, dissolved [DO]	monthly minimum	≥ 4 mg/L	all year
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 9 SU	all year
Solids, total suspended	daily average	≤ 15 mg/L	all year
Solids, total suspended	single grab sample	≤ 60 mg/L	all year
Solids, total suspended	daily average	≤ 1 lb/d	all year
Nitrogen, ammonia total [as N]	daily average	≤ 3 mg/L	all year
Nitrogen, ammonia total [as N]	single grab sample	≤ 15 mg/L	all year
Nitrogen, ammonia total [as N]	daily average	≤ .2 lb/d	all year
Flow, in conduit or thru treatment plant	daily average	≤ .008 MGD	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year
Chlorine, total residual	monthly minimum	≥ 1 mg/L	all year
Chlorine, total residual	monthly maximum	≤ 4 mg/L	all year
E. coli	daily average	≤ 126 MPN/100mL	all year
E. coli	single grab sample	≤ 399 MPN/100mL	all year
BOD, carbonaceous [5 day, 20 C]	daily average	≤ 10 mg/L	all year
BOD, carbonaceous [5 day, 20 C]	single grab sample	≤ 35 mg/L	all year
BOD, carbonaceous [5 day, 20 C]	daily average	≤ .67 lb/d	all year

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/TX0139262 · MCP: https://passage-data.com/mcp