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Charlotte, City of

Sewage treatment plant, Charlotte, Texas. NPDES permit TX0033375 expired Oct 14, 2026; its limits still apply. Last 12 months: over a limit 22 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

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

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

All 22 values over a limit
Period endingParameterReportedLimitOver by
October 2025E. coli, daily average145 CFU/100mL≤ 126 CFU/100mL15%
October 2025E. coli, single grab sample980 CFU/100mL≤ 399 CFU/100mL146%
November 2025E. coli, daily average541 CFU/100mL≤ 126 CFU/100mL329%
November 2025E. coli, single grab sample1732 CFU/100mL≤ 399 CFU/100mL334%
December 2025E. coli, daily average1447 CFU/100mL≤ 126 CFU/100mL1048%
December 2025E. coli, single grab sample2419 CFU/100mL≤ 399 CFU/100mL506%
January 2026BOD, 5-day, 20 deg. C, daily average48.25 mg/L≤ 30 mg/L61%
January 2026E. coli, daily average315 CFU/100mL≤ 126 CFU/100mL150%
January 2026E. coli, single grab sample1553 CFU/100mL≤ 399 CFU/100mL289%
February 2026E. coli, daily average712 CFU/100mL≤ 126 CFU/100mL465%
February 2026E. coli, single grab sample1732 CFU/100mL≤ 399 CFU/100mL334%
March 2026E. coli, daily average151 CFU/100mL≤ 126 CFU/100mL20%
March 2026E. coli, single grab sample613 CFU/100mL≤ 399 CFU/100mL54%
May 2026E. coli, daily average262 CFU/100mL≤ 126 CFU/100mL108%
May 2026E. coli, single grab sample2419 CFU/100mL≤ 399 CFU/100mL506%
June 2026E. coli, daily average490 CFU/100mL≤ 126 CFU/100mL289%
June 2026E. coli, single grab sample1986 CFU/100mL≤ 399 CFU/100mL398%
July 2026E. coli, daily average312 CFU/100mL≤ 126 CFU/100mL148%
July 2026E. coli, single grab sample2419 CFU/100mL≤ 399 CFU/100mL506%
August 2026E. coli, daily average135 CFU/100mL≤ 126 CFU/100mL7%
August 2026E. coli, single grab sample2419 CFU/100mL≤ 399 CFU/100mL506%
September 2026E. coli, single grab sample547 CFU/100mL≤ 399 CFU/100mL37%

Limits in force (12)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly minimum≥ 4 mg/Lall year
BOD, 5-day, 20 deg. Cdaily average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Csingle grab sample≤ 100 mg/Lall year
BOD, 5-day, 20 deg. Cdaily average≤ 55 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendeddaily average≤ 90 mg/Lall year
Solids, total suspendeddaily average≤ 165 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .22 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
E. colidaily average≤ 126 CFU/100mLall year
E. colisingle grab sample≤ 399 CFU/100mLall year

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0033375 · MCP: https://passage-data.com/mcp