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Kronos Louisiana, Inc

Inorganic Pigments, major discharger, Calcasieu, Louisiana. NPDES permit LA0080829 expired Jan 31, 2026; its limits still apply. Last 12 months: over a limit 6 times (last August 2026), 10 of 91 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (25 values), outfall 001 form ME quarterly (21 values), outfall 001 form MY quarterly (21 values), outfall 002 form A monthly (6 values), outfall 003 form Q quarterly (6 values), outfall 004 form A monthly (19 values), and 7 more forms
Last report on file
September 2026
Oct 2024 – Sep 2025
5 values over a limit, 0 required values missing, 5 of 91 reports late

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

Period endingOutfallParameterReportedLimitOver by
November 2025101Carbon, tot organic [TOC], daily maximum52 mg/L≤ 50 mg/L4%
June 2026001Solids, total suspended, daily maximum36669 lb/d≤ 14252 lb/d157%
June 2026001Solids, total suspended, monthly average9964 lb/d≤ 4072 lb/d145%
June 2026001Zirconium, total, daily maximum40.97 lb/d≤ 8.87 lb/d362%
August 2026004Nickel, total [as Ni], daily maximum.61 mg/L≤ .549 mg/L11%
August 2026004Nickel, total [as Ni], monthly average.605 mg/L≤ .398 mg/L52%

Limits in force (148)

ParameterStatisticLimitMonthsOutfall
pHminimumreport only (SU)all year001
pHmaximumreport only (SU)all year001
Solids, total suspendedmonthly average≤ 4072 lb/dall year001
Solids, total suspendeddaily maximum≤ 14252 lb/dall year001
Cadmium, total [as Cd]daily maximum≤ .63 lb/dall year001
Chromium, total [as Cr]monthly average≤ 12 lb/dall year001
Chromium, total [as Cr]daily maximum≤ 23 lb/dall year001
Cobalt, total [as Co]daily maximum≤ .66 lb/dall year001
Copper, total [as Cu]monthly average≤ .55 lb/dall year001
Copper, total [as Cu]daily maximum≤ 1.31 lb/dall year001
Iron, total [as Fe]monthly average≤ 163 lb/dall year001
Iron, total [as Fe]daily maximum≤ 529 lb/dall year001
Lead, total [as Pb]daily maximum≤ 2.99 lb/dall year001
Nickel, total [as Ni]daily maximum≤ 9.97 lb/dall year001
Vanadium, total [as V]daily maximum≤ 3.85 lb/dall year001
Zinc, total [as Zn]daily maximum≤ 19.9 lb/dall year001
Titanium, total [as Ti]monthly averagereport only (lb/d)all year001
Titanium, total [as Ti]daily maximumreport only (lb/d)all year001
Zirconium, totaldaily maximum≤ 8.87 lb/dall year001
Whole effluent toxicity - retest #1monthly average minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #1monthly average minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #17-day minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #17-day minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #2monthly average minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #27-day minimumreport only (pass=0;fail=1)all year001
Whole effluent toxicity - retest #27-day minimumreport only (pass=0;fail=1)all year001
WET, sublethal retest #1monthly average minimumreport only (pass=0;fail=1)all year001
WET, sublethal retest #1monthly average minimumreport only (pass=0;fail=1)all year001
WET, sublethal retest #17-day minimumreport only (pass=0;fail=1)all year001
WET, sublethal retest #17-day minimumreport only (pass=0;fail=1)all year001
WET, sublethal retest #2monthly average minimumreport only (pass=0;fail=1)all year001
WET, sublethal retest #2monthly average minimumreport only (pass=0;fail=1)all year001
WET, sublethal retest #27-day minimumreport only (pass=0;fail=1)all year001
WET, sublethal retest #27-day minimumreport only (pass=0;fail=1)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
Whole Effluent Toxicity - Retest #3monthly average minimumreport only (pass=0;fail=1)all year001
Whole Effluent Toxicity - Retest #3monthly average minimumreport only (pass=0;fail=1)all year001
Whole Effluent Toxicity - Retest #37-day minimumreport only (pass=0;fail=1)all year001
Whole Effluent Toxicity - Retest #37-day minimumreport only (pass=0;fail=1)all year001
Whole Effluent Toxicity, Sub-Lethal Retest #3monthly average minimumreport only (pass=0;fail=1)all year001
Whole Effluent Toxicity, Sub-Lethal Retest #3monthly average minimumreport only (pass=0;fail=1)all year001
Whole Effluent Toxicity, Sub-Lethal Retest #37-day minimumreport only (pass=0;fail=1)all year001
Whole Effluent Toxicity, Sub-Lethal Retest #37-day minimumreport only (pass=0;fail=1)all year001
Mercury, total [as Hg]monthly average≤ .05 lb/dall year001
Mercury, total [as Hg]daily maximum≤ .12 lb/dall year001
pH range excursions, > 60 minutesmonthly total≤ 0 occur/moall year001
pH range excursions, monthly total accummonthly total≤ 446 minall year001
Pass/Fail Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)monthly average minimumreport only (pass=0;fail=1)all year001
Pass/Fail Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7-day minimumreport only (pass=0;fail=1)all year001
Pass/Fail Static Renewal 7Day Chronic Menidiamonthly average minimumreport only (pass=0;fail=1)all year001
Pass/Fail Static Renewal 7Day Chronic Menidia7-day minimumreport only (pass=0;fail=1)all year001
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)monthly average minimumreport only (pass=0;fail=1)all year001
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7-day minimumreport only (pass=0;fail=1)all year001
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidiamonthly average minimumreport only (pass=0;fail=1)all year001
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia7-day minimumreport only (pass=0;fail=1)all year001
NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)monthly average minimumreport only (%)all year001
NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7-day minimumreport only (%)all year001
NOEC Lethal Static Renewal 7 Day Chronic Menidia menidiamonthly average minimumreport only (%)all year001
NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia7-day minimumreport only (%)all year001
NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)monthly average minimumreport only (%)all year001
NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7-day minimumreport only (%)all year001
NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidiamonthly average minimumreport only (%)all year001
NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia7-day minimumreport only (%)all year001
Coef Of Var Static Renewal 7Day Chronic Americamysis bahia (formerly Mysidopsis bahia)maximumreport only (%)all year001
Coef Of Var Static Renewal 7Day Chronic Menidia menidiamaximumreport only (%)all year001
pHminimumreport only (SU)all year002
pHmaximumreport only (SU)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
pH range excursions, > 60 minutesmonthly total≤ 0 occur/moall year002
pH range excursions, monthly total accummonthly total≤ 446 minall year002
pHinstantaneous minimum≥ 6 SUall year003
pHinstantaneous maximum≤ 9 SUall year003
Oil & Greasedaily maximum≤ 15 mg/Lall year003
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year003
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003
pHinstantaneous minimum≥ 6 SUall year004
pHinstantaneous maximum≤ 9 SUall year004
Oil & Greasedaily maximum≤ 15 mg/Lall year004
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year004
Arsenic, total [as As]monthly average≤ .4 mg/Lall year004
Arsenic, total [as As]daily maximum≤ .55 mg/Lall year004
Beryllium, total [as Be]monthly average≤ .199 mg/Lall year004
Beryllium, total [as Be]daily maximum≤ .275 mg/Lall year004
Cadmium, total [as Cd]monthly average≤ .199 mg/Lall year004
Cadmium, total [as Cd]daily maximum≤ .275 mg/Lall year004
Chromium, total [as Cr]monthly average≤ .248 mg/Lall year004
Chromium, total [as Cr]daily maximum≤ .343 mg/Lall year004
Lead, total [as Pb]monthly average≤ .199 mg/Lall year004
Lead, total [as Pb]daily maximum≤ .275 mg/Lall year004
Thallium, total [as Tl]monthly average≤ .7 mg/Lall year004
Thallium, total [as Tl]daily maximum≤ .97 mg/Lall year004
Nickel, total [as Ni]monthly average≤ .398 mg/Lall year004
Nickel, total [as Ni]daily maximum≤ .549 mg/Lall year004
Silver, total [as Ag]monthly average≤ .12 mg/Lall year004
Silver, total [as Ag]daily maximum≤ .17 mg/Lall year004
Vanadium, total [as V]daily maximum≤ .4 mg/Lall year004
Zinc, total [as Zn]monthly average≤ .497 mg/Lall year004
Zinc, total [as Zn]daily maximum≤ .686 mg/Lall year004
Antimony, total [as Sb]monthly average≤ .398 mg/Lall year004
Antimony, total [as Sb]daily maximum≤ .549 mg/Lall year004
Selenium, total [as Se]monthly average≤ .2 mg/Lall year004
Selenium, total [as Se]daily maximum≤ .28 mg/Lall year004
Zirconium, totaldaily maximum≤ .1 mg/Lall year004
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
pHinstantaneous minimum≥ 6 SUall year005
pHinstantaneous maximum≤ 9 SUall year005
Oil & Greasedaily maximum≤ 15 mg/Lall year005
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year005
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005
pHmonthly average≤ 6 SUall year006
pHmonthly average≤ 6 SUall year006
pHdaily maximum≤ 9 SUall year006
pHdaily maximum≤ 9 SUall year006
Solids, total suspendeddaily maximum≤ 90 mg/Lall year006
Solids, total suspendeddaily maximum≤ 90 mg/Lall year006
Solids, total suspendeddaily maximum≤ 90 mg/Lall year006
Solids, total suspendeddaily maximum≤ 90 mg/Lall year006
Oil & Greasedaily maximum≤ 15 mg/Lall year006
Oil & Greasedaily maximum≤ 15 mg/Lall year006
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year006
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year006
Lead, total [as Pb]daily maximum≤ 50 ug/Lall year006
Lead, total [as Pb]daily maximum≤ 50 ug/Lall year006
Benzenedaily maximum≤ 50 ug/Lall year006
Benzenedaily maximum≤ 50 ug/Lall year006
BTEXdaily maximum≤ 250 ug/Lall year006
BTEXdaily maximum≤ 250 ug/Lall year006
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year006
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year006
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year006
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year006
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year101
Chloroformmonthly average≤ .111 mg/Lall year101
Chloroformdaily maximum≤ .325 mg/Lall year101
Chloroformmonthly average≤ .467 lb/dall year101
Chloroformdaily maximum≤ 1.37 lb/dall year101
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year101
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year101
Oil & Greasedaily maximum≤ 15 mg/Lall year201
Carbon, tot organic [TOC]daily maximum≤ 50 mg/Lall year201
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year201
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year201

How strict are these limits?

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

Same industry: the 130 Chemicals and Allied Products permits in Louisiana.

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Your permit document is the final word. As JSON: /api/v1/permits/LA0080829 · MCP: https://passage-data.com/mcp