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Hallsville, City of

Sewage treatment plant, Hallsville, Texas. NPDES permit TX0026921 expired Jun 4, 2026; its limits still apply. Last 12 months: over a limit 7 times (last July 2026), 2 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (16 values), outfall 101 form A monthly (5 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 2 of 24 reports late

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

Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], daily maximum12.2 mg/L≤ 10 mg/L22%
March 2026E. coli, daily maximum2420 CFU/100mL≤ 399 CFU/100mL507%
March 2026Nitrogen, ammonia total [as N], daily maximum14.1 mg/L≤ 10 mg/L41%
May 2026Nitrogen, ammonia total [as N], daily average11.75 mg/L≤ 6 mg/L96%
May 2026Nitrogen, ammonia total [as N], daily maximum13.4 mg/L≤ 10 mg/L34%
July 2026Nitrogen, ammonia total [as N], daily average6.3 mg/L≤ 6 mg/L5%
July 2026Nitrogen, ammonia total [as N], daily maximum10.2 mg/L≤ 10 mg/L2%

Limits in force (24)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly minimum≥ 6 mg/Lall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendeddaily average≤ 20 mg/Lall year001
Solids, total suspendeddaily maximum≤ 45 mg/Lall year001
Solids, total suspendeddaily average≤ 133 lb/dall year001
Nitrogen, ammonia total [as N]daily average≤ 6 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 10 mg/Lall year001
Nitrogen, ammonia total [as N]daily average≤ 40 lb/dall year001
Flow, in conduit or thru treatment plantdaily average≤ .8 MGDall year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
E. colidaily average≤ 126 CFU/100mLall year001
E. colidaily maximum≤ 399 CFU/100mLall year001
BOD, carbonaceous [5 day, 20 C]daily average≤ 20 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 45 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily average≤ 133 lb/dall year001
Temperature, water deg. fahrenheitdaily averagereport only (deg F)all year101
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year101
Nitrogen, ammonia total [as N]daily averagereport only (mg/L)Jun–Oct101
Nitrogen, ammonia total [as N]daily averagereport only (mg/L)Jan, Feb, Mar, Apr, May, Nov, Dec101
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun–Oct101
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, May, Nov, Dec101
Nitrogen, ammonia total [as N]daily averagereport only (lb/d)Jun–Oct101
Nitrogen, ammonia total [as N]daily averagereport only (lb/d)Jan, Feb, Mar, Apr, May, Nov, Dec101

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/TX0026921 · MCP: https://passage-data.com/mcp