Passage Data · Check a report · Use it from your AI

Collin County Mud No 5

Sewage treatment plant, Rockwall, Texas. NPDES permit TX0140295, in force until Oct 16, 2028. Last 12 months: over a limit 8 times (last August 2026), 2 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (18 values)
Renewal application due
Apr 19, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026

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

Period endingParameterReportedLimitOver by
December 2025Nitrogen, ammonia total [as N], daily average10.9 mg/L≤ 3 mg/L263%
December 2025Nitrogen, ammonia total [as N], single grab sample19 mg/L≤ 15 mg/L27%
January 2026BOD, carbonaceous [5 day, 20 C], daily average11 mg/L≤ 10 mg/L10%
January 2026pH, minimum5.6 SU≥ 6 SU—
February 2026BOD, carbonaceous [5 day, 20 C], daily average11.5 mg/L≤ 10 mg/L15%
February 2026Oxygen, dissolved [DO], monthly minimum4.3 mg/L≥ 6 mg/L28%
February 2026Solids, total suspended, daily average21.5 mg/L≤ 15 mg/L43%
August 2026pH, minimum4.8 SU≥ 6 SU—

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 suspendedsingle grab sample≤ 60 mg/Lall year
Solids, total suspendeddaily average≤ 38 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≤ 7.5 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .3 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≤ 25 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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TX0140295 · MCP: https://passage-data.com/mcp