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Corinth Potw

Sewage treatment plant, major discharger, Corinth, Mississippi. NPDES permit MS0061328, in force until Apr 30, 2029. Last 12 months: over a limit 60 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (57 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
62 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 60 values over a limit
Period endingParameterReportedLimitOver by
October 2025Copper, total recoverable, monthly average.012 mg/L≤ .008 mg/L50%
October 2025Copper, total recoverable, maximum weekly average.012 mg/L≤ .011 mg/L9%
October 2025Nitrogen, ammonia total [as N], monthly average100.39 lb/d≤ 100 lb/d0%
October 2025Nitrogen, ammonia total [as N], monthly average5.14 mg/L≤ 2 mg/L157%
October 2025Nitrogen, ammonia total [as N], maximum weekly average11.34 mg/L≤ 3 mg/L278%
October 2025Nitrogen, ammonia total [as N], maximum weekly average240.58 lb/d≤ 150 lb/d60%
November 2025Copper, total recoverable, monthly average.019 mg/L≤ .008 mg/L138%
November 2025Copper, total recoverable, maximum weekly average.019 mg/L≤ .011 mg/L73%
November 2025Nitrogen, total [as N], monthly average641.53 lb/d≤ 575 lb/d12%
November 2025Nitrogen, total [as N], maximum weekly average1639.02 lb/d≤ 863 lb/d90%
November 2025Solids, suspended percent removal, minimum69.92 %≥ 85 %101%
November 2025Solids, total suspended, monthly average102.76 mg/L≤ 30 mg/L243%
November 2025Solids, total suspended, monthly average2614.95 lb/d≤ 1501 lb/d74%
November 2025Solids, total suspended, maximum weekly average366.6 mg/L≤ 45 mg/L715%
November 2025Solids, total suspended, maximum weekly average7238.74 lb/d≤ 2252 lb/d221%
December 2025Copper, total recoverable, monthly average.009 mg/L≤ .008 mg/L13%
January 2026Flow, in conduit or thru treatment plant, monthly average9.12 MGD≤ 6 MGD52%
January 2026Nitrogen, ammonia total [as N], maximum weekly average159.39 lb/d≤ 150 lb/d6%
January 2026Nitrogen, total [as N], monthly average1056.88 lb/d≤ 575 lb/d84%
January 2026Nitrogen, total [as N], maximum weekly average2243.85 lb/d≤ 863 lb/d160%
February 2026Nitrogen, ammonia total [as N], monthly average276.24 lb/d≤ 100 lb/d176%
February 2026Nitrogen, ammonia total [as N], monthly average9.49 mg/L≤ 2 mg/L375%
February 2026Nitrogen, ammonia total [as N], maximum weekly average17.36 mg/L≤ 3 mg/L479%
February 2026Nitrogen, ammonia total [as N], maximum weekly average432.46 lb/d≤ 150 lb/d188%
February 2026Nitrogen, total [as N], monthly average597.56 lb/d≤ 575 lb/d4%
March 2026BOD, 5-day, 20 deg. C, monthly average11.26 mg/L≤ 10 mg/L13%
March 2026BOD, 5-day, 20 deg. C, monthly average729.44 lb/d≤ 500 lb/d46%
March 2026BOD, 5-day, 20 deg. C, maximum weekly average1735.21 lb/d≤ 751 lb/d131%
March 2026Copper, total recoverable, monthly average.018 mg/L≤ .008 mg/L125%
March 2026Copper, total recoverable, maximum weekly average.02 mg/L≤ .011 mg/L82%
March 2026Flow, in conduit or thru treatment plant, monthly average7.15 MGD≤ 6 MGD19%
March 2026Nitrogen, ammonia total [as N], monthly average11.58 mg/L≤ 2 mg/L479%
March 2026Nitrogen, ammonia total [as N], monthly average553.6 lb/d≤ 100 lb/d454%
March 2026Nitrogen, ammonia total [as N], maximum weekly average1084.86 lb/d≤ 150 lb/d623%
March 2026Nitrogen, ammonia total [as N], maximum weekly average16.8 mg/L≤ 3 mg/L460%
March 2026Nitrogen, total [as N], monthly average1083.48 lb/d≤ 575 lb/d88%
March 2026Nitrogen, total [as N], maximum weekly average2287.59 lb/d≤ 863 lb/d165%
March 2026Solids, total suspended, monthly average1619.41 lb/d≤ 1501 lb/d8%
March 2026Solids, total suspended, maximum weekly average4616.05 lb/d≤ 2252 lb/d105%
April 2026Copper, total recoverable, monthly average.026 mg/L≤ .008 mg/L225%
April 2026Copper, total recoverable, maximum weekly average.061 mg/L≤ .011 mg/L455%
April 2026Nitrogen, ammonia total [as N], monthly average146.55 lb/d≤ 100 lb/d47%
April 2026Nitrogen, ammonia total [as N], monthly average5.48 mg/L≤ 2 mg/L174%
April 2026Nitrogen, ammonia total [as N], maximum weekly average12.14 mg/L≤ 3 mg/L305%
April 2026Nitrogen, ammonia total [as N], maximum weekly average349.5 lb/d≤ 150 lb/d133%
April 2026Solids, total suspended, monthly average33.95 mg/L≤ 30 mg/L13%
April 2026Solids, total suspended, maximum weekly average45.6 mg/L≤ 45 mg/L1%
May 2026Nitrogen, ammonia total [as N], maximum weekly average3.67 mg/L≤ 3 mg/L22%
June 2026Nitrogen, ammonia total [as N], monthly average2.21 mg/L≤ 2 mg/L11%
July 2026Nitrogen, ammonia total [as N], monthly average3.86 mg/L≤ 2 mg/L93%
July 2026Nitrogen, ammonia total [as N], maximum weekly average216.52 lb/d≤ 150 lb/d44%
July 2026Nitrogen, ammonia total [as N], maximum weekly average9.86 mg/L≤ 3 mg/L229%
August 2026Nitrogen, ammonia total [as N], monthly average10.41 mg/L≤ 2 mg/L421%
August 2026Nitrogen, ammonia total [as N], monthly average309.91 lb/d≤ 100 lb/d210%
August 2026Nitrogen, ammonia total [as N], maximum weekly average23.07 mg/L≤ 3 mg/L669%
August 2026Nitrogen, ammonia total [as N], maximum weekly average874.99 lb/d≤ 150 lb/d483%
September 2026Nitrogen, ammonia total [as N], monthly average11.88 mg/L≤ 2 mg/L494%
September 2026Nitrogen, ammonia total [as N], monthly average210.89 lb/d≤ 100 lb/d111%
September 2026Nitrogen, ammonia total [as N], maximum weekly average17.96 mg/L≤ 3 mg/L499%
September 2026Nitrogen, ammonia total [as N], maximum weekly average343.77 lb/d≤ 150 lb/d129%

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≤ 10 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 500 lb/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 751 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≤ 1501 lb/dall year
Solids, total suspendedmaximum weekly average≤ 2252 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≤ 575 lb/dall year
Nitrogen, total [as N]maximum weekly average≤ 863 lb/dall 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≤ 100 lb/dall year
Nitrogen, ammonia total [as N]maximum weekly average≤ 150 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≤ 125 lb/dall year
Phosphorus, total [as P]maximum weekly average≤ 188 lb/dall 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
Copper, total recoverablemonthly average≤ .008 mg/Lall year
Copper, total recoverablemaximum weekly average≤ .011 mg/Lall year
Flow, in conduit or thru treatment plantmonthly average≤ 6 MGDall year
Flow, in conduit or thru treatment plantmaximum weekly averagereport only (MGD)all year
Chlorine, total residualmonthly average≤ .018 mg/Lall year
Chlorine, total residualmaximum weekly average≤ .031 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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Your permit document is the final word. As JSON: /api/v1/permits/MS0061328 · MCP: https://passage-data.com/mcp