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Waskom, City of

Sewage treatment plant, Waskom, Texas. NPDES permit TX0020036, in force until Aug 31, 2031. Last 12 months: over a limit 7 times (last May 2026), 1 of 11 reports late. 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
7 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
November 2025Solids, total suspended, daily average16 mg/L≤ 15 mg/L7%
December 2025Nitrogen, ammonia total [as N], daily average3.878 mg/L≤ 3 mg/L29%
January 2026BOD, carbonaceous [5 day, 20 C], daily average12.6 mg/L≤ 10 mg/L26%
January 2026Nitrogen, ammonia total [as N], daily maximum26.9 mg/L≤ 10 mg/L169%
January 2026Solids, total suspended, daily average19 mg/L≤ 15 mg/L27%
January 2026Solids, total suspended, daily maximum46 mg/L≤ 40 mg/L15%
May 2026Chlorine, total residual, monthly minimum.8 mg/L≥ 1 mg/L20%

Limits in force (18)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly minimum≥ 5 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendeddaily average≤ 15 mg/Lall year
Solids, total suspendeddaily maximum≤ 40 mg/Lall year
Solids, total suspendeddaily average≤ 63 lb/dall year
Nitrogen, ammonia total [as N]daily average≤ 3 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 10 mg/Lall year
Nitrogen, ammonia total [as N]daily average≤ 13 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .5 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. colidaily maximum≤ 399 CFU/100mLall year
BOD, carbonaceous [5 day, 20 C]daily average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily average≤ 42 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/TX0020036 · MCP: https://passage-data.com/mcp