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Baldwyn Potw

Sewage treatment plant, Baldwyn, Mississippi. NPDES permit MS0020087, in force until Dec 31, 2027. Last 12 months: over a limit once (last April 2026), 36 required values missing, 9 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (21 values), form Y yearly
Renewal application due
Jul 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
July 2026
Oct 2024 – Sep 2025
2 values over a limit, 15 required values missing, 12 of 13 reports late

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

Period endingParameterReportedLimitOver by
April 2026Nitrogen, ammonia total [as N], monthly average7.6 mg/L≤ 5 mg/L52%

Limits in force (36)

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≤ 160 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≤ 480 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
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]annual averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/Lall year
Nitrogen, ammonia total [as N]monthly totalreport only (lb/mo)all year
Nitrogen, ammonia total [as N]annual average≤ 27 lb/dall year
Nitrogen, ammonia 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
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]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≤ .64 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
BOD, 5-day, percent removalminimum≥ 65 %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/MS0020087 · MCP: https://passage-data.com/mcp