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East Tawakoni, City of

Sewage treatment plant, East Tawakoni, Texas. NPDES permit TX0101303, in force until Apr 29, 2031. Last 12 months: over a limit 9 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (18 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
24 values over a limit, 29 required values missing, 7 of 12 reports late

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

Period endingParameterReportedLimitOver by
April 2026BOD, 5-day, 20 deg. C, daily average12.6 lb/d≤ 11 lb/d15%
April 2026BOD, 5-day, 20 deg. C, daily average82.3 mg/L≤ 10 mg/L723%
April 2026BOD, 5-day, 20 deg. C, single grab sample152 mg/L≤ 35 mg/L334%
May 2026BOD, 5-day, 20 deg. C, daily average38.6 mg/L≤ 10 mg/L286%
May 2026BOD, 5-day, 20 deg. C, single grab sample140 mg/L≤ 35 mg/L300%
July 2026BOD, 5-day, 20 deg. C, daily average11.3 mg/L≤ 10 mg/L13%
July 2026Solids, total suspended, daily average23.8 mg/L≤ 15 mg/L59%
August 2026BOD, 5-day, 20 deg. C, daily average11.9 mg/L≤ 10 mg/L19%
August 2026Solids, total suspended, daily average17.3 mg/L≤ 15 mg/L15%

Limits in force (18)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly minimum≥ 4 mg/Lall year
BOD, 5-day, 20 deg. Cdaily average≤ 10 mg/Lall year
BOD, 5-day, 20 deg. Csingle grab sample≤ 35 mg/Lall year
BOD, 5-day, 20 deg. Cdaily average≤ 11 lb/dall 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≤ 16 lb/dall year
Nitrogen, ammonia total [as N]daily averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]single grab samplereport only (mg/L)all year
Nitrogen, ammonia total [as N]daily averagereport only (lb/d)all year
Flow, in conduit or thru treatment plantdaily average≤ .13 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

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/TX0101303 · MCP: https://passage-data.com/mcp