Trenton,City of — NPDES permit TX0134244: limits, due date and EPA's record

Trenton,City of

Sewage treatment plant, Trenton, Texas. NPDES permit TX0134244, in force until Aug 25, 2027. Last 12 months: over a limit 20 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due

About 20 days after each period: form A monthly (18 values)

Renewal application due

Feb 26, 2027 · 180 days before expiry; your permit may set another date

Last report on file

August 2026

Oct 2024 – Sep 2025

8 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 20 values over a limit

Period ending	Parameter	Reported	Limit	Over by
December 2025	Nitrogen, ammonia total [as N], daily average	4.23 mg/L	≤ 3 mg/L	41%
January 2026	E. coli, single grab sample	< 2420 CFU/100mL	≤ 399 CFU/100mL	507%
January 2026	Nitrogen, ammonia total [as N], daily average	3.51 mg/L	≤ 3 mg/L	17%
February 2026	Nitrogen, ammonia total [as N], daily average	6.35 lb/d	≤ 4.1 lb/d	55%
February 2026	Nitrogen, ammonia total [as N], daily average	6.96 mg/L	≤ 3 mg/L	132%
March 2026	Nitrogen, ammonia total [as N], daily average	13.65 mg/L	≤ 3 mg/L	355%
March 2026	Nitrogen, ammonia total [as N], daily average	9.46 lb/d	≤ 4.1 lb/d	131%
March 2026	Nitrogen, ammonia total [as N], single grab sample	26.1 mg/L	≤ 15 mg/L	74%
April 2026	E. coli, daily average	404 CFU/100mL	≤ 126 CFU/100mL	221%
April 2026	E. coli, single grab sample	1010 CFU/100mL	≤ 399 CFU/100mL	153%
April 2026	Nitrogen, ammonia total [as N], daily average	8.08 lb/d	≤ 4.1 lb/d	97%
April 2026	Nitrogen, ammonia total [as N], daily average	9.9 mg/L	≤ 3 mg/L	230%
April 2026	Nitrogen, ammonia total [as N], single grab sample	18.5 mg/L	≤ 15 mg/L	23%
May 2026	E. coli, daily average	< 2420 CFU/100mL	≤ 126 CFU/100mL	1821%
May 2026	E. coli, single grab sample	< 2420 CFU/100mL	≤ 399 CFU/100mL	507%
May 2026	Flow, in conduit or thru treatment plant, daily average	.204 MGD	≤ .165 MGD	24%
May 2026	Nitrogen, ammonia total [as N], daily average	5.5 mg/L	≤ 3 mg/L	83%
June 2026	BOD, carbonaceous [5 day, 20 C], daily average	23.4 lb/d	≤ 14 lb/d	67%
June 2026	Flow, in conduit or thru treatment plant, daily average	.388 MGD	≤ .165 MGD	135%
June 2026	Solids, total suspended, daily average	33.21 lb/d	≤ 21 lb/d	58%

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	≤ 21 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	≤ 4.1 lb/d	all year
Flow, in conduit or thru treatment plant	daily average	≤ .165 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 CFU/100mL	all year
E. coli	single grab sample	≤ 399 CFU/100mL	all year
BOD, carbonaceous [5 day, 20 C]	daily average	≤ 10 mg/L	all year
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 35 mg/L	all year
BOD, carbonaceous [5 day, 20 C]	daily average	≤ 14 lb/d	all year

How strict are these limits?

Solids, total suspended, daily average 15 mg/L — stricter than 35% of 939 other minor POTWs in Texas; 58% have the same limit

Solids, total suspended, single grab sample 60 mg/L — stricter than 29% of 536 other minor POTWs in Texas; 65% have the same limit

Oxygen, dissolved [DO], monthly minimum at least 4 mg/L — stricter than 15% of 905 other minor POTWs in Texas; 59% have the same limit

Your permit document is the final word. As JSON: /api/v1/permits/TX0134244 · MCP: https://passage-data.com/mcp