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Metal Impact South LLC

Nonferrous Forgings, New Albany, Mississippi. NPDES permit MS0052523, in force until Dec 31, 2030. Last 12 months: over a limit 10 times (last February 2026), 1 required value missing, 2 of 13 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (66 values), form S twice a year
Last report on file
August 2026
Oct 2024 – Sep 2025
42 values over a limit, 0 required values missing, 1 of 14 reports late

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

Period endingParameterReportedLimitOver by
October 2025Aluminum, total recoverable, monthly average.164 lb/d≤ .15 lb/d9%
October 2025Aluminum, total recoverable, monthly average.96 mg/L≤ .59 mg/L63%
October 2025BOD, carbonaceous [5 day, 20 C], daily maximum23 mg/L≤ 15 mg/L53%
October 2025BOD, carbonaceous [5 day, 20 C], monthly average14 mg/L≤ 10 mg/L40%
November 2025Aluminum, total recoverable, monthly average.67 mg/L≤ .59 mg/L14%
November 2025E. coli, daily maximum461 #/100mL≤ 410 #/100mL12%
January 2026Aluminum, total recoverable, daily maximum1 mg/L≤ .42611 mg/L135%
January 2026Aluminum, total recoverable, monthly average.72 mg/L≤ .23862 mg/L202%
February 2026E. coli, daily maximum435 #/100mL≤ 410 #/100mL6%
February 2026E. coli, monthly average366 #/100mL≤ 126 #/100mL190%

Limits in force (74)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitmaximum≤ 90 deg Fall year
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 31 mg/Lall year
Solids, total suspendeddaily maximum≤ 60 mg/Lall year
Solids, total suspendedmonthly average≤ 8.01 lb/dall year
Solids, total suspendeddaily maximum≤ 15.5 lb/dall year
Oil & Greasemonthly average≤ 26 mg/Lall year
Oil & Greasedaily maximum≤ 52 mg/Lall year
Oil & Greasemonthly average≤ 6.72 lb/dall year
Oil & Greasedaily maximum≤ 13.44 lb/dall year
Nitrogen, total [as N]semi-annual averagereport only (lb/d)all year
Nitrogen, total [as N]daily maximumreport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ .52 lb/dall year
Nitrogen, ammonia total [as N]daily maximum≤ .78 lb/dall year
Phosphorus, total [as P]semi-annual averagereport only (lb/d)all year
Phosphorus, total [as P]daily maximumreport only (lb/d)all year
Cyanide, total [as CN]monthly average≤ .00886 mg/Lall year
Cyanide, total [as CN]daily maximum≤ .0375 mg/Lall year
Cyanide, total [as CN]monthly average≤ .0163 lb/dall year
Cyanide, total [as CN]daily maximum≤ .0688 lb/dall year
Nickel, total recoverablemonthly average≤ .5685 mg/Lall year
Nickel, total recoverabledaily maximum≤ 3.6 mg/Lall year
Nickel, total recoverablemonthly average≤ 1.0291 lb/dall year
Nickel, total recoverabledaily maximum≤ 6.6058 lb/dall year
Silver total recoverablemonthly average≤ .036 mg/Lall year
Silver total recoverabledaily maximum≤ .05949 mg/Lall year
Silver total recoverablemonthly average≤ .0661 lb/dall year
Silver total recoverabledaily maximum≤ .1092 lb/dall year
Zinc, total recoverablemonthly average≤ 1.48 mg/Lall year
Zinc, total recoverabledaily maximum≤ 1.7024 mg/Lall year
Zinc, total recoverablemonthly average≤ 2.7155 lb/dall year
Zinc, total recoverabledaily maximum≤ 3.1236 lb/dall year
Aluminum, total recoverablemonthly average≤ .23862 mg/Lall year
Aluminum, total recoverabledaily maximum≤ .42611 mg/Lall year
Aluminum, total recoverablemonthly average≤ .43782 lb/dall year
Aluminum, total recoverabledaily maximum≤ .78183 lb/dall year
Cadmium, total recoverablemonthly average≤ .006 mg/Lall year
Cadmium, total recoverabledaily maximum≤ .05239 mg/Lall year
Cadmium, total recoverablemonthly average≤ .011 lb/dall year
Cadmium, total recoverabledaily maximum≤ .0961 lb/dall year
Lead, total recoverablemonthly average≤ .02511 mg/Lall year
Lead, total recoverabledaily maximum≤ .69 mg/Lall year
Lead, total recoverablemonthly average≤ .0461 lb/dall year
Lead, total recoverabledaily maximum≤ 1.266 lb/dall year
Chromium, total recoverablemonthly average≤ 1.65 mg/Lall year
Chromium, total recoverabledaily maximum≤ 2.77 mg/Lall year
Chromium, total recoverablemonthly average≤ 3.0318 lb/dall year
Chromium, total recoverabledaily maximum≤ 5.0824 lb/dall year
Copper, total recoverablemonthly average≤ .16438 mg/Lall year
Copper, total recoverabledaily maximum≤ .23992 mg/Lall year
Copper, total recoverablemonthly average≤ .3016 lb/dall year
Copper, total recoverabledaily maximum≤ .4402 lb/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly average≤ .03238 mg/Lall year
Chlorine, total residualdaily maximum≤ .055 mg/Lall year
Chlorine, total residualmonthly average≤ .0594 lb/dall year
Chlorine, total residualdaily maximum≤ .1009 lb/dall year
E. colimonthly average≤ 126 #/100mLall year
E. colidaily maximum≤ 410 #/100mLall year
Solids, total dissolved [TDS]monthly averagereport only (mg/L)all year
Solids, total dissolved [TDS]daily maximumreport only (mg/L)all year
Total toxic organics [TTO] [40 CFR433]daily maximum≤ 2.13 mg/Lall year
Total toxic organics [TTO] [40 CFR433]daily maximum≤ .55 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 2.59 lb/dall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 3.88 lb/dall year
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaminimum≥ 29.86 %all year
%Effect Static Renewal 7Day Chronic Pimephales promelasminimum≥ 29.86 %all year

How strict are these limits?

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

Same industry: the 7 Fabricated Metal Products permits in Mississippi.

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