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Clarksville City, City of

Sewage treatment plant, City Of Clarksville City, Texas. NPDES permit TX0127272, in force until Aug 29, 2028. Last 12 months: over a limit 9 times (last February 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (16 values)
Renewal application due
Mar 2, 2028 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
3 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
December 2025Nitrogen, ammonia total [as N], daily average3.09 lb/d≤ 2.4 lb/d29%
December 2025Nitrogen, ammonia total [as N], daily average7.67 mg/L≤ 3 mg/L156%
December 2025Nitrogen, ammonia total [as N], single grab sample19.3 mg/L≤ 15 mg/L29%
January 2026Nitrogen, ammonia total [as N], daily average12.9 mg/L≤ 3 mg/L330%
January 2026Nitrogen, ammonia total [as N], daily average7.31 lb/d≤ 2.4 lb/d205%
January 2026Nitrogen, ammonia total [as N], single grab sample20.1 mg/L≤ 15 mg/L34%
February 2026Nitrogen, ammonia total [as N], daily average12.928 mg/L≤ 3 mg/L331%
February 2026Nitrogen, ammonia total [as N], daily average4.86 lb/d≤ 2.4 lb/d103%
February 2026Nitrogen, ammonia total [as N], single grab sample22.1 mg/L≤ 15 mg/L47%

Limits in force (16)

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≤ 12 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≤ 2.4 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .095 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all 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≤ 7.9 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/TX0127272 · MCP: https://passage-data.com/mcp