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Addicks Utility District

Sewage treatment plant, Houston, Texas. NPDES permit TX0112585, in force until Sep 2, 2027. Last 12 months: over a limit 8 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (18 values)
Renewal application due
Mar 6, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
2 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 2025E. coli, daily maximum222 CFU/100mL≤ 200 CFU/100mL11%
December 2025Solids, total suspended, daily average16.3 mg/L≤ 15 mg/L9%
December 2025Solids, total suspended, daily maximum45.5 mg/L≤ 40 mg/L14%
January 2026Solids, total suspended, daily average25.6 mg/L≤ 15 mg/L71%
January 2026Solids, total suspended, daily maximum60.5 mg/L≤ 40 mg/L51%
March 2026Nitrogen, ammonia total [as N], daily average5.12 mg/L≤ 2 mg/L156%
March 2026Nitrogen, ammonia total [as N], daily maximum20.3 mg/L≤ 10 mg/L103%
May 2026Solids, total suspended, daily average16.1 mg/L≤ 15 mg/L7%

Limits in force (18)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly minimum≥ 6 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≤ 100 lb/dall year
Nitrogen, ammonia total [as N]daily average≤ 2 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≤ .8 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≤ 63 CFU/100mLall year
E. colidaily maximum≤ 200 CFU/100mLall year
BOD, carbonaceous [5 day, 20 C]daily average≤ 7 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 17 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily average≤ 47 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/TX0112585 · MCP: https://passage-data.com/mcp