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Lone Star, City of

Sewage treatment plant, Lone Star, Texas. NPDES permit TX0088081, in force until Apr 5, 2029. Last 12 months: over a limit 18 times (last August 2026), 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (21 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
16 values over a limit, 63 required values missing, 5 of 12 reports late

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

All 18 values over a limit
Period endingParameterReportedLimitOver by
November 2025Nitrogen, ammonia total [as N], daily average3.24 mg/L≤ 3 mg/L8%
November 2025Solids, total suspended, daily average16.7 mg/L≤ 15 mg/L11%
December 2025Nitrogen, ammonia total [as N], daily average5.7 mg/L≤ 3 mg/L90%
December 2025Nitrogen, ammonia total [as N], single grab sample15.5 mg/L≤ 15 mg/L3%
December 2025Solids, total suspended, daily average55.3 mg/L≤ 15 mg/L269%
December 2025Solids, total suspended, single grab sample130 mg/L≤ 60 mg/L117%
January 2026Nitrogen, ammonia total [as N], daily average7.55 mg/L≤ 3 mg/L152%
January 2026Solids, total suspended, daily average40.7 mg/L≤ 15 mg/L171%
February 2026BOD, carbonaceous [5 day, 20 C], daily average14.6 mg/L≤ 10 mg/L46%
February 2026BOD, carbonaceous [5 day, 20 C], single grab sample35.5 mg/L≤ 35 mg/L1%
February 2026Nitrogen, ammonia total [as N], daily average7.8 mg/L≤ 3 mg/L160%
February 2026Nitrogen, ammonia total [as N], single grab sample17.6 mg/L≤ 15 mg/L17%
February 2026Solids, total suspended, daily average31.8 mg/L≤ 15 mg/L112%
May 2026Nitrogen, ammonia total [as N], daily average4.11 mg/L≤ 3 mg/L37%
May 2026Nitrogen, ammonia total [as N], single grab sample15.7 mg/L≤ 15 mg/L5%
June 2026Solids, total suspended, daily average15.35 mg/L≤ 15 mg/L2%
July 2026Solids, total suspended, daily average15.7 mg/L≤ 15 mg/L5%
August 2026Solids, total suspended, daily average24.4 mg/L≤ 15 mg/L63%

Limits in force (21)

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≤ 55 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≤ 11 lb/dall year
Phosphorus, total [as P]daily averagereport only (mg/L)all year
Phosphorus, total [as P]single grab samplereport only (mg/L)all year
Phosphorus, total [as P]daily averagereport only (lb/d)all year
Flow, in conduit or thru treatment plantdaily average≤ .44 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≤ 37 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/TX0088081 · MCP: https://passage-data.com/mcp