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Raymond Potw

Sewage treatment plant, Raymond, Mississippi. NPDES permit MS0051772, in force until Apr 30, 2031. Last 12 months: over a limit 21 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (47 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
29 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 21 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], monthly average6 mg/L≤ 2 mg/L200%
October 2025Nitrogen, ammonia total [as N], maximum weekly average7.85 mg/L≤ 3 mg/L162%
December 2025BOD, 5-day, 20 deg. C, monthly average15 mg/L≤ 10 mg/L50%
December 2025BOD, 5-day, 20 deg. C, maximum weekly average21 mg/L≤ 15 mg/L40%
January 2026BOD, 5-day, 20 deg. C, monthly average12 mg/L≤ 10 mg/L20%
January 2026Nitrogen, ammonia total [as N], monthly average12 mg/L≤ 2 mg/L500%
January 2026Nitrogen, ammonia total [as N], maximum weekly average12 mg/L≤ 3 mg/L300%
February 2026BOD, 5-day, 20 deg. C, monthly average15 mg/L≤ 10 mg/L50%
February 2026Nitrogen, ammonia total [as N], monthly average11 lb/d≤ 2.5 lb/d340%
February 2026Nitrogen, ammonia total [as N], monthly average27 mg/L≤ 2 mg/L1250%
February 2026Nitrogen, ammonia total [as N], maximum weekly average11 lb/d≤ 3.75 lb/d193%
February 2026Nitrogen, ammonia total [as N], maximum weekly average27 mg/L≤ 3 mg/L800%
March 2026BOD, 5-day, 20 deg. C, monthly average12 mg/L≤ 10 mg/L20%
March 2026Nitrogen, ammonia total [as N], monthly average21 mg/L≤ 2 mg/L950%
March 2026Nitrogen, ammonia total [as N], monthly average8.76 lb/d≤ 2.5 lb/d250%
March 2026Nitrogen, ammonia total [as N], maximum weekly average21 mg/L≤ 3 mg/L600%
March 2026Nitrogen, ammonia total [as N], maximum weekly average8.76 lb/d≤ 3.75 lb/d134%
May 2026Nitrogen, ammonia total [as N], monthly average1.7 lb/d≤ 1.3 lb/d31%
May 2026Nitrogen, ammonia total [as N], monthly average4.12 mg/L≤ 2 mg/L106%
May 2026Nitrogen, ammonia total [as N], maximum weekly average3.6 lb/d≤ 1.9 lb/d89%
May 2026Nitrogen, ammonia total [as N], maximum weekly average8.3 mg/L≤ 3 mg/L177%

Limits in force (47)

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. Cmonthly average≤ 12 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 18 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 11.3 lb/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 16.9 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmaximum weekly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly 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 suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 38 lb/dall year
Solids, total suspendedmaximum weekly average≤ 56 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmaximum weekly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendedmaximum weekly averagereport only (lb/d)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]maximum weekly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly average≤ 17.01 lb/dall year
Nitrogen, total [as N]maximum weekly average≤ 25.52 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 3 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 1.3 lb/dall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 1.9 lb/dall year
Nitrogen, ammonia total [as N]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]monthly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]maximum weekly averagereport only (lb/d)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]maximum weekly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ 4.57 lb/dall year
Phosphorus, total [as P]maximum weekly average≤ 6.86 lb/dall year
Flow, in conduit or thru treatment plantmonthly average≤ .075 MGDall year
Flow, in conduit or thru treatment plantmaximum weekly averagereport only (MGD)all year
Chlorine, total residualmonthly average≤ .011 mg/Lall year
Chlorine, total residualmaximum weekly average≤ .019 mg/Lall year
E. colimonthly 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 21, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], monthly average0.86 lb/dtighter0.415 lb/d (12 values)0.483×
Nitrogen, ammonia total [as N], monthly average1.37 mg/Ltighter1.175 mg/L (12 values)0.858×
Nitrogen, ammonia total [as N], maximum weekly average2 mg/Ltighter1.21 mg/L (12 values)0.605×
Nitrogen, ammonia total [as N], maximum weekly average1.3 lb/dtighter0.415 lb/d (12 values)0.319×

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/MS0051772 · MCP: https://passage-data.com/mcp