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Trinity Bay Conservation District

Sewage treatment plant, Hankamer, Texas. NPDES permit TX0133523, in force until Apr 23, 2031. Last 12 months: over a limit 18 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (18 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
28 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 18 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], daily average6.9 mg/L≤ 3 mg/L130%
October 2025Nitrogen, ammonia total [as N], single grab sample23.4 mg/L≤ 15 mg/L56%
November 2025Nitrogen, ammonia total [as N], daily average4.3 mg/L≤ 3 mg/L43%
November 2025Solids, total suspended, daily average42 mg/L≤ 15 mg/L180%
November 2025Solids, total suspended, single grab sample95 mg/L≤ 60 mg/L58%
December 2025Nitrogen, ammonia total [as N], daily average9.84 mg/L≤ 3 mg/L228%
December 2025Nitrogen, ammonia total [as N], single grab sample15.5 mg/L≤ 15 mg/L3%
January 2026Nitrogen, ammonia total [as N], daily average12.3 mg/L≤ 3 mg/L310%
January 2026Nitrogen, ammonia total [as N], single grab sample28.5 mg/L≤ 15 mg/L90%
February 2026Nitrogen, ammonia total [as N], daily average9.75 mg/L≤ 3 mg/L225%
February 2026Nitrogen, ammonia total [as N], single grab sample19.2 mg/L≤ 15 mg/L28%
March 2026Nitrogen, ammonia total [as N], daily average6.68 mg/L≤ 3 mg/L123%
April 2026Nitrogen, ammonia total [as N], daily average7.78 mg/L≤ 3 mg/L159%
May 2026Nitrogen, ammonia total [as N], daily average6.82 mg/L≤ 3 mg/L127%
July 2026Nitrogen, ammonia total [as N], daily average4.26 mg/L≤ 3 mg/L42%
July 2026Solids, total suspended, daily average15.4 mg/L≤ 15 mg/L3%
September 2026Nitrogen, ammonia total [as N], daily average8.44 mg/L≤ 3 mg/L181%
September 2026Nitrogen, ammonia total [as N], single grab sample23.7 mg/L≤ 15 mg/L58%

Limits in force (18)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly minimum≥ 4 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendeddaily average≤ 15 mg/Lall year
Solids, total suspendedsingle grab sample≤ 60 mg/Lall year
Solids, total suspendeddaily average≤ 38 lb/dall year
Nitrogen, ammonia total [as N]daily average≤ 3 mg/Lall year
Nitrogen, ammonia total [as N]single grab sample≤ 15 mg/Lall year
Nitrogen, ammonia total [as N]daily average≤ 7.5 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .3 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly minimum≥ 1 mg/Lall year
Chlorine, total residualmonthly maximum≤ 4 mg/Lall year
E. colidaily average≤ 126 CFU/100mLall year
E. colisingle grab sample≤ 399 CFU/100mLall year
BOD, carbonaceous [5 day, 20 C]daily average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]single grab sample≤ 35 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily average≤ 25 lb/dall year

How strict are these limits?

Cited limits by parameter: Texas's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0133523 · MCP: https://passage-data.com/mcp