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Inverness Potw

Sewage treatment plant, Inverness, Mississippi. NPDES permit MS0020320, in force until Apr 30, 2031. Last 12 months: over a limit 15 times (last April 2026), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (20 values), form Y yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
15 values over a limit, 0 required values missing, 0 of 13 reports late

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

All 15 values over a limit
Period endingParameterReportedLimitOver by
October 2025Chlorine, total residual, monthly average.03 mg/L≤ .011 mg/L173%
October 2025E. coli, monthly average410 #/100mL≤ 126 #/100mL225%
November 2025Chlorine, total residual, monthly average.05 mg/L≤ .011 mg/L355%
November 2025E. coli, monthly average133 #/100mL≤ 126 #/100mL6%
December 2025Chlorine, total residual, monthly average.02 mg/L≤ .011 mg/L82%
December 2025E. coli, monthly average1730 #/100mL≤ 126 #/100mL1273%
December 2025Flow, in conduit or thru treatment plant, annual average.2 MGD≤ .15 MGD33%
January 2026BOD, 5-day, 20 deg. C, monthly average39 mg/L≤ 30 mg/L30%
January 2026Chlorine, total residual, monthly average.03 mg/L≤ .011 mg/L173%
January 2026E. coli, monthly average2420 #/100mL≤ 126 #/100mL1821%
February 2026E. coli, monthly average1990 #/100mL≤ 126 #/100mL1479%
March 2026Chlorine, total residual, monthly average.02 mg/L≤ .011 mg/L82%
March 2026E. coli, monthly average1730 #/100mL≤ 126 #/100mL1273%
March 2026Oxygen, dissolved [DO], minimum4.84 mg/L≥ 6 mg/L19%
April 2026Chlorine, total residual, monthly average.02 mg/L≤ .011 mg/L82%

Limits in force (29)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly totalreport only (lb/mo)all year
BOD, 5-day, 20 deg. Cannual average≤ 38 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly totalreport only (lb/mo)all year
BOD, 5-day, 20 deg. Cannual averagereport only (lb/d)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 90 mg/Lall year
Solids, total suspendedmonthly totalreport only (lb/mo)all year
Solids, total suspendedannual average≤ 113 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly totalreport only (lb/mo)all year
Solids, total suspendedannual averagereport only (lb/d)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly totalreport only (lb/mo)all year
Nitrogen, total [as N]annual averagereport only (lb/d)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly totalreport only (lb/mo)all year
Phosphorus, total [as P]annual averagereport only (lb/d)all year
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all year
Flow, in conduit or thru treatment plantannual average≤ .15 MGDall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all year
Chlorine, total residualmonthly average≤ .011 mg/Lall year
E. colimonthly average≤ 126 #/100mLall year
BOD, 5-day, percent removalminimum≥ 65 %all year
Solids, suspended percent removalminimum≥ 65 %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/MS0020320 · MCP: https://passage-data.com/mcp