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Tutwiler Potw

Sewage treatment plant, Tutwiler, Mississippi. NPDES permit MS0025054, in force until Apr 30, 2029. Last 12 months: over a limit 15 times (last June 2026), 55 required values missing, 3 of 3 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form Q quarterly (55 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
18 values over a limit, 0 required values missing, 4 of 4 reports late

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

All 15 values over a limit
Period endingParameterReportedLimitOver by
December 2025Chlorine, total residual, maximum weekly average.08 mg/L≤ .019 mg/L321%
December 2025E. coli, maximum monthly average2420 #/100mL≤ 126 #/100mL1821%
December 2025E. coli, maximum weekly average2420 #/100mL≤ 410 #/100mL490%
December 2025Nitrogen, total [as N], maximum monthly average72.39 lb/d≤ 71.98 lb/d1%
December 2025Solids, suspended percent removal, minimum68 %≥ 85 %113%
December 2025Solids, total suspended, maximum monthly average35 mg/L≤ 30 mg/L17%
December 2025pH, maximum9.13 SU≤ 9 SU—
March 2026Solids, suspended percent removal, minimum67 %≥ 85 %120%
March 2026Solids, suspended percent removal, minimum67 %≥ 85 %120%
June 2026BOD, 5-day, 20 deg. C, maximum monthly average23 mg/L≤ 10 mg/L130%
June 2026BOD, 5-day, 20 deg. C, maximum weekly average23 mg/L≤ 15 mg/L53%
June 2026E. coli, maximum monthly average2420 #/100mL≤ 126 #/100mL1821%
June 2026E. coli, maximum weekly average2420 #/100mL≤ 410 #/100mL490%
June 2026Nitrogen, ammonia total [as N], maximum monthly average2.86 mg/L≤ 2 mg/L43%
June 2026Solids, suspended percent removal, minimum81 %≥ 85 %27%

Limits in force (55)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
Oxygen, dissolved [DO]minimumreport only (mg/L)all year
Oxygen, dissolved [DO]maximumreport only (mg/L)all year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 10 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 63 lb/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 94 lb/dall year
BOD, 5-day, 20 deg. Cmaximum monthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmaximum weekly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmaximum monthly averagereport only (lb/d)all year
BOD, 5-day, 20 deg. Cmaximum weekly averagereport only (lb/d)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmaximum monthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmaximum monthly average≤ 188 lb/dall year
Solids, total suspendedmaximum weekly average≤ 281 lb/dall year
Solids, total suspendedmaximum monthly averagereport only (mg/L)all year
Solids, total suspendedmaximum weekly averagereport only (mg/L)all year
Solids, total suspendedmaximum monthly averagereport only (lb/d)all year
Solids, total suspendedmaximum weekly averagereport only (lb/d)all year
Nitrogen, total [as N]maximum monthly averagereport only (mg/L)all year
Nitrogen, total [as N]maximum weekly averagereport only (mg/L)all year
Nitrogen, total [as N]maximum monthly average≤ 71.98 lb/dall year
Nitrogen, total [as N]maximum weekly average≤ 107.97 lb/dall year
Nitrogen, total [as N]maximum monthly averagereport only (mg/L)all year
Nitrogen, total [as N]maximum weekly averagereport only (mg/L)all year
Nitrogen, total [as N]maximum monthly averagereport only (lb/d)all year
Nitrogen, total [as N]maximum weekly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]maximum monthly average≤ 2 mg/Lall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 3 mg/Lall year
Nitrogen, ammonia total [as N]maximum monthly average≤ 13 lb/dall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 19 lb/dall year
Nitrogen, ammonia total [as N]maximum monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]maximum weekly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]maximum monthly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]maximum weekly averagereport only (lb/d)all year
Phosphorus, total [as P]maximum monthly averagereport only (mg/L)all year
Phosphorus, total [as P]maximum weekly averagereport only (mg/L)all year
Phosphorus, total [as P]maximum monthly average≤ 32.55 lb/dall year
Phosphorus, total [as P]maximum weekly average≤ 48.825 lb/dall year
Phosphorus, total [as P]maximum monthly averagereport only (mg/L)all year
Phosphorus, total [as P]maximum weekly averagereport only (mg/L)all year
Phosphorus, total [as P]maximum monthly averagereport only (lb/d)all year
Phosphorus, total [as P]maximum weekly averagereport only (lb/d)all year
Flow, in conduit or thru treatment plantmaximum monthly average≤ .75 MGDall year
Flow, in conduit or thru treatment plantmaximum weekly averagereport only (MGD)all year
Chlorine, total residualmaximum monthly average≤ .011 mg/Lall year
Chlorine, total residualmaximum weekly average≤ .019 mg/Lall year
E. colimaximum monthly average≤ 126 #/100mLall year
E. colimaximum weekly average≤ 410 #/100mLall year
BOD, 5-day, percent removalminimum≥ 85 %all year
Solids, suspended percent removalminimum≥ 85 %all year
Sludge settleability 30 minuteminimumreport only (mL/L)all year
Sludge settleability 30 minutemaximumreport only (mL/L)all year

New limits from May 16, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], maximum monthly average8.57 lb/dtighter1.1 lb/d (3 values)0.128×
Nitrogen, ammonia total [as N], maximum monthly average1.37 mg/Ltighter0.33 mg/L (3 values)0.241×
Nitrogen, ammonia total [as N], maximum weekly average12.85 lb/dtighter1.1 lb/d (3 values)0.0856×
Nitrogen, ammonia total [as N], maximum weekly average2.05 mg/Ltighter0.33 mg/L (3 values)0.161×

How strict are these limits?

Cited limits by parameter: Mississippi'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/MS0025054 · MCP: https://passage-data.com/mcp