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Oxford Potw

Sewage treatment plant, major discharger, Oxford, Mississippi. NPDES permit MS0029017, in force until Jul 31, 2030. Last 12 months: over a limit 20 times (last August 2026), 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (57 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 15 reports late

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

All 20 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], monthly average2.21 mg/L≤ 2 mg/L11%
February 2026Nitrogen, ammonia total [as N], monthly average2.66 mg/L≤ 2 mg/L33%
February 2026Nitrogen, ammonia total [as N], maximum weekly average4.02 mg/L≤ 3 mg/L34%
July 2026BOD, 5-day, 20 deg. C, monthly average18 mg/L≤ 8 mg/L125%
July 2026BOD, 5-day, 20 deg. C, monthly average644 lb/d≤ 434 lb/d48%
July 2026BOD, 5-day, 20 deg. C, maximum weekly average1253 lb/d≤ 651 lb/d92%
July 2026BOD, 5-day, 20 deg. C, maximum weekly average32 mg/L≤ 12 mg/L167%
July 2026Chlorine, total residual, monthly average.04 mg/L≤ .02 mg/L100%
July 2026Chlorine, total residual, maximum weekly average.06 mg/L≤ .035 mg/L71%
July 2026E. coli, monthly average687 #/100mL≤ 126 #/100mL445%
July 2026E. coli, maximum weekly average1197 #/100mL≤ 410 #/100mL192%
July 2026Nitrogen, ammonia total [as N], monthly average187.1 lb/d≤ 108 lb/d73%
July 2026Nitrogen, ammonia total [as N], monthly average5.5 mg/L≤ 2 mg/L175%
July 2026Nitrogen, ammonia total [as N], maximum weekly average355.2 lb/d≤ 163 lb/d118%
July 2026Nitrogen, ammonia total [as N], maximum weekly average9.2 mg/L≤ 3 mg/L207%
July 2026Solids, suspended percent removal, minimum75 %≥ 85 %67%
August 2026Chlorine, total residual, monthly average.05 mg/L≤ .02 mg/L150%
August 2026Chlorine, total residual, maximum weekly average.09 mg/L≤ .035 mg/L157%
August 2026Nitrogen, ammonia total [as N], monthly average2.6 mg/L≤ 2 mg/L30%
August 2026Nitrogen, ammonia total [as N], maximum weekly average3.9 mg/L≤ 3 mg/L30%

Limits in force (57)

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≤ 8 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 12 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 434 lb/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 651 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
pHminimumreport only (SU)all year
pHmaximumreport only (SU)all year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 1627 lb/dall year
Solids, total suspendedmaximum weekly average≤ 2441 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 averagereport only (lb/d)all year
Nitrogen, total [as N]maximum 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 averagereport only (lb/d)all year
Nitrogen, total [as N]maximum weekly averagereport only (lb/d)all 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≤ 108 lb/dall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 163 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 averagereport only (lb/d)all year
Phosphorus, total [as P]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 averagereport only (lb/d)all year
Phosphorus, total [as P]maximum weekly averagereport only (lb/d)all year
Flow, in conduit or thru treatment plantmonthly average≤ 6.5 MGDall year
Flow, in conduit or thru treatment plantmaximum weekly averagereport only (MGD)all year
Chlorine, total residualmonthly average≤ .02 mg/Lall year
Chlorine, total residualmaximum weekly average≤ .035 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

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/MS0029017 · MCP: https://passage-data.com/mcp