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Aqua Texas Inc

Sewerage Systems, Denton County, Texas. NPDES permit TX0122661, in force until Jan 10, 2027. Last 12 months: over a limit 20 times (last September 2026), 62 required values missing, 6 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (18 values)
Renewal application due
Jul 14, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
10 values over a limit, 11 required values missing, 2 of 12 reports late

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

All 20 values over a limit
Period endingParameterReportedLimitOver by
November 2025BOD, carbonaceous [5 day, 20 C], daily average12.8 mg/L≤ 10 mg/L28%
November 2025BOD, carbonaceous [5 day, 20 C], daily average12.8 mg/L≤ 10 mg/L28%
December 2025Nitrogen, ammonia total [as N], daily average11.4 lb/d≤ 4.1 lb/d178%
December 2025Nitrogen, ammonia total [as N], daily average11.4 lb/d≤ 4.1 lb/d178%
December 2025Nitrogen, ammonia total [as N], daily average16.3 mg/L≤ 3 mg/L443%
December 2025Nitrogen, ammonia total [as N], daily average16.3 mg/L≤ 3 mg/L443%
December 2025Nitrogen, ammonia total [as N], single grab sample33.5 mg/L≤ 15 mg/L123%
December 2025Nitrogen, ammonia total [as N], single grab sample33.5 mg/L≤ 15 mg/L123%
January 2026BOD, carbonaceous [5 day, 20 C], daily average19.8 mg/L≤ 10 mg/L98%
January 2026BOD, carbonaceous [5 day, 20 C], daily average19.8 mg/L≤ 10 mg/L98%
January 2026Chlorine, total residual, monthly minimum.63 mg/L≥ 1 mg/L37%
January 2026Solids, total suspended, daily average27.6 mg/L≤ 15 mg/L84%
January 2026Solids, total suspended, daily average27.6 mg/L≤ 15 mg/L84%
March 2026BOD, carbonaceous [5 day, 20 C], daily average15.4 lb/d≤ 14 lb/d10%
March 2026BOD, carbonaceous [5 day, 20 C], daily average15.4 lb/d≤ 14 lb/d10%
June 2026E. coli, single grab sample816 CFU/100mL≤ 399 CFU/100mL105%
September 2026Chlorine, total residual, monthly maximum5.53 mg/L≤ 4 mg/L38%
September 2026Chlorine, total residual, monthly minimum.4 mg/L≥ 1 mg/L60%
September 2026E. coli, daily average154 CFU/100mL≤ 126 CFU/100mL22%
September 2026E. coli, single grab sample613 CFU/100mL≤ 399 CFU/100mL54%

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≤ 21 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≤ 4.1 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .165 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≤ 14 lb/dall year

How strict are these limits?

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

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Your permit document is the final word. As JSON: /api/v1/permits/TX0122661 · MCP: https://passage-data.com/mcp