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Waller, City of

Sewage treatment plant, Waller County, Texas. NPDES permit TX0032476, in force until Aug 22, 2029. Last 12 months: over a limit 13 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (18 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
22 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 13 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], daily average2.38 mg/L≤ 2 mg/L19%
November 2025Nitrogen, ammonia total [as N], daily average2.62 mg/L≤ 2 mg/L31%
December 2025Solids, total suspended, daily average26 mg/L≤ 15 mg/L73%
January 2026Flow, in conduit or thru treatment plant, daily average.91 MGD≤ .9 MGD1%
January 2026Solids, total suspended, daily average22.8 mg/L≤ 15 mg/L52%
February 2026Solids, total suspended, daily average22.5 mg/L≤ 15 mg/L50%
May 2026Chlorine, total residual, monthly maximum4.15 mg/L≤ 4 mg/L4%
May 2026Flow, in conduit or thru treatment plant, daily average.98 MGD≤ .9 MGD9%
May 2026Nitrogen, ammonia total [as N], daily average3.66 mg/L≤ 2 mg/L83%
May 2026Nitrogen, ammonia total [as N], daily average52.3 lb/d≤ 15 lb/d249%
May 2026Nitrogen, ammonia total [as N], daily maximum10.5 mg/L≤ 10 mg/L5%
June 2026Nitrogen, ammonia total [as N], daily average3.25 mg/L≤ 2 mg/L63%
July 2026Nitrogen, ammonia total [as N], daily average2.62 mg/L≤ 2 mg/L31%

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≤ 113 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≤ 15 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .9 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≤ 53 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/TX0032476 · MCP: https://passage-data.com/mcp