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Nucor Steel Berkeley

Blast Furnaces And Steel Mills, major discharger, Huger, South Carolina. NPDES permit SC0047392, in force until Dec 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 29 days after each period: outfall 001 form M1 monthly (15 values), outfall 001 form M2 monthly (15 values), outfall 001 form M3 monthly (15 values), outfall 001 form M4 monthly (15 values), outfall 001 form M5 monthly (15 values), outfall 002 form 1 monthly (13 values), and 20 more forms
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 2 required values missing, 0 of 108 reports late

Limits in force (150)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]instantaneous minimum≥ 4 mg/Lall year001
Oxygen, dissolved [DO]instantaneous minimum≥ 4 mg/Lall year001
Oxygen, dissolved [DO]instantaneous minimum≥ 4 mg/Lall year001
Oxygen, dissolved [DO]instantaneous minimum≥ 4 mg/Lall year001
Oxygen, dissolved [DO]instantaneous minimum≥ 4 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
pHinstantaneous minimumreport only (SU)all year001
pHinstantaneous minimumreport only (SU)all year001
pHinstantaneous minimumreport only (SU)all year001
pHinstantaneous minimumreport only (SU)all year001
pHinstantaneous minimumreport only (SU)all year001
pHinstantaneous maximumreport only (SU)all year001
pHinstantaneous maximumreport only (SU)all year001
pHinstantaneous maximumreport only (SU)all year001
pHinstantaneous maximumreport only (SU)all year001
pHinstantaneous maximumreport only (SU)all year001
Solids, total suspendedmonthly average≤ 600 lb/dall year001
Solids, total suspendedmonthly average≤ 744 lb/dall year001
Solids, total suspendedmonthly average≤ 942 lb/dall year001
Solids, total suspendedmonthly average≤ 1228 lb/dall year001
Solids, total suspendedmonthly average≤ 1151 lb/dall year001
Solids, total suspendeddaily maximum≤ 1577 lb/dall year001
Solids, total suspendeddaily maximum≤ 1960 lb/dall year001
Solids, total suspendeddaily maximum≤ 2477 lb/dall year001
Solids, total suspendeddaily maximum≤ 3225 lb/dall year001
Solids, total suspendeddaily maximum≤ 3032 lb/dall year001
Oil & Greasemonthly average≤ 116 lb/dall year001
Oil & Greasemonthly average≤ 143 lb/dall year001
Oil & Greasemonthly average≤ 240 lb/dall year001
Oil & Greasemonthly average≤ 182 lb/dall year001
Oil & Greasemonthly average≤ 221 lb/dall year001
Oil & Greasedaily maximum≤ 349 lb/dall year001
Oil & Greasedaily maximum≤ 430 lb/dall year001
Oil & Greasedaily maximum≤ 721 lb/dall year001
Oil & Greasedaily maximum≤ 549 lb/dall year001
Oil & Greasedaily maximum≤ 664 lb/dall year001
Lead, total [as Pb]monthly average≤ 4 lb/dall year001
Lead, total [as Pb]monthly average≤ 3.2 lb/dall year001
Lead, total [as Pb]monthly average≤ 5.1 lb/dall year001
Lead, total [as Pb]monthly average≤ 6.5 lb/dall year001
Lead, total [as Pb]monthly average≤ 6.2 lb/dall year001
Lead, total [as Pb]daily maximum≤ 12.1 lb/dall year001
Lead, total [as Pb]daily maximum≤ 9.7 lb/dall year001
Lead, total [as Pb]daily maximum≤ 15.2 lb/dall year001
Lead, total [as Pb]daily maximum≤ 19.5 lb/dall year001
Lead, total [as Pb]daily maximum≤ 18.4 lb/dall year001
Zinc, total [as Zn]monthly average≤ 4.7 lb/dall year001
Zinc, total [as Zn]monthly average≤ 5.9 lb/dall year001
Zinc, total [as Zn]monthly average≤ 9.5 lb/dall year001
Zinc, total [as Zn]monthly average≤ 9 lb/dall year001
Zinc, total [as Zn]monthly average≤ 7.4 lb/dall year001
Zinc, total [as Zn]daily maximum≤ 14.2 lb/dall year001
Zinc, total [as Zn]daily maximum≤ 17.7 lb/dall year001
Zinc, total [as Zn]daily maximum≤ 28.5 lb/dall year001
Zinc, total [as Zn]daily maximum≤ 27 lb/dall year001
Zinc, total [as Zn]daily maximum≤ 22.2 lb/dall year001
Tetrachloroethylenemonthly average≤ .035 lb/dall year001
Tetrachloroethylenemonthly average≤ .029 lb/dall year001
Tetrachloroethylenemonthly average≤ .024 lb/dall year001
Tetrachloroethylenemonthly average≤ .055 lb/dall year001
Tetrachloroethylenemonthly average≤ .042 lb/dall year001
Tetrachloroethylenedaily maximum≤ .035 lb/dall year001
Tetrachloroethylenedaily maximum≤ .029 lb/dall year001
Tetrachloroethylenedaily maximum≤ .024 lb/dall year001
Tetrachloroethylenedaily maximum≤ .055 lb/dall year001
Tetrachloroethylenedaily maximum≤ .042 lb/dall year001
Naphthalenemonthly average≤ .016 lb/dall year001
Naphthalenemonthly average≤ .037 lb/dall year001
Naphthalenemonthly average≤ .024 lb/dall year001
Naphthalenemonthly average≤ .02 lb/dall year001
Naphthalenemonthly average≤ .028 lb/dall year001
Naphthalenedaily maximum≤ .016 lb/dall year001
Naphthalenedaily maximum≤ .037 lb/dall year001
Naphthalenedaily maximum≤ .024 lb/dall year001
Naphthalenedaily maximum≤ .02 lb/dall year001
Naphthalenedaily maximum≤ .028 lb/dall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Mercury, total [as Hg]monthly averagereport only (ng/L)all year001
Mercury, total [as Hg]monthly averagereport only (ng/L)all year001
Mercury, total [as Hg]monthly averagereport only (ng/L)all year001
Mercury, total [as Hg]monthly averagereport only (ng/L)all year001
Mercury, total [as Hg]monthly averagereport only (ng/L)all year001
Mercury, total [as Hg]daily maximumreport only (ng/L)all year001
Mercury, total [as Hg]daily maximumreport only (ng/L)all year001
Mercury, total [as Hg]daily maximumreport only (ng/L)all year001
Mercury, total [as Hg]daily maximumreport only (ng/L)all year001
Mercury, total [as Hg]daily maximumreport only (ng/L)all year001
Length of longest pH excursioninstantaneous maximum≤ 60 minall year001
Length of longest pH excursioninstantaneous maximum≤ 60 minall year001
Length of longest pH excursioninstantaneous maximum≤ 60 minall year001
Length of longest pH excursioninstantaneous maximum≤ 60 minall year001
Length of longest pH excursioninstantaneous maximum≤ 60 minall year001
pH range excursions, monthly total accummonthly maximum≤ 446 minall year001
pH range excursions, monthly total accummonthly maximum≤ 446 minall year001
pH range excursions, monthly total accummonthly maximum≤ 446 minall year001
pH range excursions, monthly total accummonthly maximum≤ 446 minall year001
pH range excursions, monthly total accummonthly maximum≤ 446 minall year001
LC50 Static 48Hr Acute Ceriodaphnia dubiadaily minimumreport only (%)all year001
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly averagereport only (%)all year001
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximumreport only (%)all year001
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily minimumreport only (%)all year001
Oxygen, dissolved [DO]instantaneous minimum≥ 4 mg/Lall year002
pHinstantaneous minimum≥ 6.5 SUall year002
pHinstantaneous maximum≤ 8.5 SUall year002
Solids, total suspendedmonthly averagereport only (mg/L)all year002
Solids, total suspendeddaily maximumreport only (mg/L)all year002
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Mar–Oct002
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Mar–Oct002
Chromium, hexavalent [as Cr]monthly averagereport only (mg/L)all year002
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all year002
Copper, total [as Cu]monthly averagereport only (mg/L)all year002
Copper, total [as Cu]daily maximumreport only (mg/L)all year002
Zinc, total [as Zn]monthly averagereport only (mg/L)all year002
Zinc, total [as Zn]daily maximumreport only (mg/L)all year002
Aluminum, total [as Al]monthly averagereport only (mg/L)all year002
Aluminum, total [as Al]daily maximumreport only (mg/L)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Mercury, total [as Hg]monthly averagereport only (ng/L)all year002
Mercury, total [as Hg]daily maximumreport only (ng/L)all year002
BOD, 5-day, 20 deg. Cmonthly average≤ 45 mg/Lall year01A
BOD, 5-day, 20 deg. Cdaily maximum≤ 90 mg/Lall year01A
Solids, total suspendedmonthly average≤ 45 mg/Lall year01A
Solids, total suspendeddaily maximum≤ 90 mg/Lall year01A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year01A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year01A
Enterococci30-day geometric mean≤ 35 CFU/100mLall year01A
Enterococcidaily maximum≤ 104 CFU/100mLall year01A
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year01A
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year01A
Solids, total suspendedmonthly averagereport only (mg/L)all year02A
Solids, total suspendeddaily maximum≤ 40 mg/Lall year02A

New limits from Jul 1, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Chromium, hexavalent [as Cr], daily maximum0.08 mg/Lnew0 mg/L (11 values)0×
Chromium, hexavalent [as Cr], monthly average0.05 mg/Lnew0 mg/L (11 values)0×
Copper, total [as Cu], daily maximum0.0058 mg/Lnew0 mg/L (11 values)0×
Copper, total [as Cu], monthly average0.0037 mg/Lnew0 mg/L (11 values)0×
Nitrogen, ammonia total [as N], daily maximum7.56 mg/L (Mar–Oct)new0 mg/L (7 values)0×
Nitrogen, ammonia total [as N], monthly average1.13 mg/L (Mar–Oct)new0 mg/L (7 values)0×
Zinc, total [as Zn], daily maximum0.095 mg/Lnew0.035 mg/L (11 values)0.368×
Zinc, total [as Zn], monthly average0.086 mg/Lnew0.035 mg/L (11 values)0.407×

How strict are these limits?

Cited limits by parameter: South Carolina'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/SC0047392 · MCP: https://passage-data.com/mcp