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Montgomery County Mud 113

Sewage treatment plant, Conroe, Texas. NPDES permit TX0129674, in force until Mar 15, 2028. Last 12 months: no values over a limit, 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (27 values)
Renewal application due
Sep 17, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 1 required value missing, 2 of 12 reports late

Limits in force (27)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly minimum≥ 6 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendeddaily average≤ 12 mg/Lall year
Solids, total suspendeddaily maximum≤ 40 mg/Lall year
Solids, total suspendeddaily average≤ 95 lb/dall year
Nitrogen, total [as N]daily averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, total [as N]daily averagereport only (lb/d)all 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≤ 16 lb/dall year
Nitrogen, nitrate total [as N]daily averagereport only (mg/L)all year
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)all year
Nitrogen, nitrate total [as N]daily averagereport only (lb/d)all year
Phosphorus, total [as P]daily average≤ .5 mg/Lall year
Phosphorus, total [as P]daily maximum≤ 2 mg/Lall year
Phosphorus, total [as P]daily average≤ 3.9 lb/dall year
Flow, in conduit or thru treatment plantdaily average≤ .945 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualinstantaneous maximum≤ .1 mg/Lall year
Chlorine, total residualmonthly minimum≥ 1 mg/Lall year
E. colidaily average≤ 63 MPN/100mLall year
E. colidaily maximum≤ 200 MPN/100mLall year
BOD, carbonaceous [5 day, 20 C]daily average≤ 5 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 20 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily average≤ 39 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/TX0129674 · MCP: https://passage-data.com/mcp