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Jamie Whitten Delta States Research Center

Federal facility (Fish Hatcheries And Preserves), Stoneville, Mississippi. NPDES permit MS0040339, in force until Apr 30, 2029. Last 12 months: over a limit 2 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (29 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
8 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
November 2025BOD, 5-day, 20 deg. C, monthly average6 mg/L≤ 4 mg/L50%
April 2026BOD, 5-day, 20 deg. C, monthly average5 mg/L≤ 4 mg/L25%

Limits in force (29)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 4 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
BOD, 5-day, 20 deg. Cdaily maximumreport only (lb/d)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 45 mg/Lall year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendeddaily maximumreport only (lb/d)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, total [as N]monthly average≤ 52.28 lb/dall year
Nitrogen, total [as N]daily maximum≤ 78.42 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 1.37 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 2.06 mg/Lall year
Nitrogen, Kjeldahl, total [as N]monthly maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (lb/d)all year
Nitrite + Nitrate total [as N]monthly averagereport only (lb/d)all year
Nitrite + Nitrate total [as N]daily maximumreport only (lb/d)all year
Phosphorus, total [as P]monthly average≤ 3.4 lb/dall year
Phosphorus, total [as P]daily maximum≤ 5.1 lb/dall year
Flow, in conduit or thru treatment plantmonthly average≤ .42 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly average≤ .011 mg/Lall year
Chlorine, total residualdaily maximum≤ .019 mg/Lall 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/MS0040339 · MCP: https://passage-data.com/mcp