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Calhoun City Potw

Sewage treatment plant, Calhoun City, Mississippi. NPDES permit MS0028134, in force until Jul 31, 2029. Last 12 months: no values over a limit, 10 required values missing, 4 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (19 values), form Y yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 1 of 13 reports late

Limits in force (29)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly totalreport only (lb/mo)all year
BOD, 5-day, 20 deg. Cannual average≤ 80 lb/dall year
BOD, 5-day, 20 deg. Cmaximum monthly 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 suspendedmaximum monthly average≤ 90 mg/Lall year
Solids, total suspendedmonthly totalreport only (lb/mo)all year
Solids, total suspendedannual average≤ 240 lb/dall year
Solids, total suspendedmaximum monthly 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 totalreport only (lb/d)all year
Nitrogen, total [as N]annual average≤ 30.7 lb/dall year
Nitrogen, ammonia total [as N]maximum monthly average≤ 14 mg/Lall year
Nitrogen, ammonia total [as N]monthly totalreport only (lb/d)all year
Nitrogen, ammonia total [as N]annual average≤ 5.3 lb/dall year
Nitrogen, ammonia total [as N]maximum monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly totalreport only (lb/d)all year
Nitrogen, ammonia total [as N]annual averagereport only (lb/d)all year
Phosphorus, total [as P]monthly totalreport only (lb/d)all year
Phosphorus, total [as P]annual average≤ 13.9 lb/dall year
Flow, in conduit or thru treatment plantannual average≤ .32 MGDall year
BOD, 5-day, percent removalminimum≥ 65 %all year
Solids, suspended percent removalminimum≥ 65 %all year
Flow, totalmonthly totalreport only (Mgal/mo)all year

How strict are these limits?

Cited limits by parameter: Mississippi's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MS0028134 · MCP: https://passage-data.com/mcp