KRONOS LOUISIANA, INC

NPDES permit LA0080829 · Major NON-POTW · administratively continued, expires 2026-01-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2026-01-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

6values over a limit
0required values missing, on 0 form(s)
10of 91 forms filed late

Last period with anything received: 2026-08-31. Most often over: Nickel, total [as Ni] (2), Solids, total suspended (2), Zirconium, total (1).

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (148)

OutfallParameterStatisticLimitMonths
001pHMINIMUM report only all year
001pHMAXIMUM report only all year
001Solids, total suspendedMO AVG <= 4072 lb/d all year
001Solids, total suspendedDAILY MX <= 14252 lb/d all year
001Cadmium, total [as Cd]DAILY MX <= .63 lb/d all year
001Chromium, total [as Cr]MO AVG <= 12 lb/d all year
001Chromium, total [as Cr]DAILY MX <= 23 lb/d all year
001Cobalt, total [as Co]DAILY MX <= .66 lb/d all year
001Copper, total [as Cu]MO AVG <= .55 lb/d all year
001Copper, total [as Cu]DAILY MX <= 1.31 lb/d all year
001Iron, total [as Fe]MO AVG <= 163 lb/d all year
001Iron, total [as Fe]DAILY MX <= 529 lb/d all year
001Lead, total [as Pb]DAILY MX <= 2.99 lb/d all year
001Nickel, total [as Ni]DAILY MX <= 9.97 lb/d all year
001Vanadium, total [as V]DAILY MX <= 3.85 lb/d all year
001Zinc, total [as Zn]DAILY MX <= 19.9 lb/d all year
001Titanium, total [as Ti]MO AVG report only all year
001Titanium, total [as Ti]DAILY MX report only all year
001Zirconium, totalDAILY MX <= 8.87 lb/d all year
001Whole effluent toxicity - retest #1MO AV MN report only all year
001Whole effluent toxicity - retest #1MO AV MN report only all year
001Whole effluent toxicity - retest #17 DA MIN report only all year
001Whole effluent toxicity - retest #17 DA MIN report only all year
001Whole effluent toxicity - retest #2MO AV MN report only all year
001Whole effluent toxicity - retest #2MO AV MN report only all year
001Whole effluent toxicity - retest #27 DA MIN report only all year
001Whole effluent toxicity - retest #27 DA MIN report only all year
001WET, sublethal retest #1MO AV MN report only all year
001WET, sublethal retest #1MO AV MN report only all year
001WET, sublethal retest #17 DA MIN report only all year
001WET, sublethal retest #17 DA MIN report only all year
001WET, sublethal retest #2MO AV MN report only all year
001WET, sublethal retest #2MO AV MN report only all year
001WET, sublethal retest #27 DA MIN report only all year
001WET, sublethal retest #27 DA MIN report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Whole Effluent Toxicity - Retest #3MO AV MN report only all year
001Whole Effluent Toxicity - Retest #3MO AV MN report only all year
001Whole Effluent Toxicity - Retest #37 DA MIN report only all year
001Whole Effluent Toxicity - Retest #37 DA MIN report only all year
001Whole Effluent Toxicity, Sub-Lethal Retest #3MO AV MN report only all year
001Whole Effluent Toxicity, Sub-Lethal Retest #3MO AV MN report only all year
001Whole Effluent Toxicity, Sub-Lethal Retest #37 DA MIN report only all year
001Whole Effluent Toxicity, Sub-Lethal Retest #37 DA MIN report only all year
001Mercury, total [as Hg]MO AVG <= .05 lb/d all year
001Mercury, total [as Hg]DAILY MX <= .12 lb/d all year
001pH range excursions, > 60 minutesMO TOTAL <= 0 occur/mo all year
001pH range excursions, monthly total accumMO TOTAL <= 446 min all year
001Pass/Fail Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
001Pass/Fail Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
001Pass/Fail Static Renewal 7Day Chronic MenidiaMO AV MN report only all year
001Pass/Fail Static Renewal 7Day Chronic Menidia7 DA MIN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)MO AV MN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7 DA MIN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
001Coef Of Var Static Renewal 7Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MAXIMUM report only all year
001Coef Of Var Static Renewal 7Day Chronic Menidia menidiaMAXIMUM report only all year
002pHMINIMUM report only all year
002pHMAXIMUM report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002pH range excursions, > 60 minutesMO TOTAL <= 0 occur/mo all year
002pH range excursions, monthly total accumMO TOTAL <= 446 min all year
003pHINST MIN >= 6 SU all year
003pHINST MAX <= 9 SU all year
003Oil & GreaseDAILY MX <= 15 mg/L all year
003Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
004pHINST MIN >= 6 SU all year
004pHINST MAX <= 9 SU all year
004Oil & GreaseDAILY MX <= 15 mg/L all year
004Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
004Arsenic, total [as As]MO AVG <= .4 mg/L all year
004Arsenic, total [as As]DAILY MX <= .55 mg/L all year
004Beryllium, total [as Be]MO AVG <= .199 mg/L all year
004Beryllium, total [as Be]DAILY MX <= .275 mg/L all year
004Cadmium, total [as Cd]MO AVG <= .199 mg/L all year
004Cadmium, total [as Cd]DAILY MX <= .275 mg/L all year
004Chromium, total [as Cr]MO AVG <= .248 mg/L all year
004Chromium, total [as Cr]DAILY MX <= .343 mg/L all year
004Lead, total [as Pb]MO AVG <= .199 mg/L all year
004Lead, total [as Pb]DAILY MX <= .275 mg/L all year
004Thallium, total [as Tl]MO AVG <= .7 mg/L all year
004Thallium, total [as Tl]DAILY MX <= .97 mg/L all year
004Nickel, total [as Ni]MO AVG <= .398 mg/L all year
004Nickel, total [as Ni]DAILY MX <= .549 mg/L all year
004Silver, total [as Ag]MO AVG <= .12 mg/L all year
004Silver, total [as Ag]DAILY MX <= .17 mg/L all year
004Vanadium, total [as V]DAILY MX <= .4 mg/L all year
004Zinc, total [as Zn]MO AVG <= .497 mg/L all year
004Zinc, total [as Zn]DAILY MX <= .686 mg/L all year
004Antimony, total [as Sb]MO AVG <= .398 mg/L all year
004Antimony, total [as Sb]DAILY MX <= .549 mg/L all year
004Selenium, total [as Se]MO AVG <= .2 mg/L all year
004Selenium, total [as Se]DAILY MX <= .28 mg/L all year
004Zirconium, totalDAILY MX <= .1 mg/L all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
005pHINST MIN >= 6 SU all year
005pHINST MAX <= 9 SU all year
005Oil & GreaseDAILY MX <= 15 mg/L all year
005Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
006pHMO AVG <= 6 SU all year
006pHMO AVG <= 6 SU all year
006pHDAILY MX <= 9 SU all year
006pHDAILY MX <= 9 SU all year
006Solids, total suspendedDAILY MX <= 90 mg/L all year
006Solids, total suspendedDAILY MX <= 90 mg/L all year
006Solids, total suspendedDAILY MX <= 90 mg/L all year
006Solids, total suspendedDAILY MX <= 90 mg/L all year
006Oil & GreaseDAILY MX <= 15 mg/L all year
006Oil & GreaseDAILY MX <= 15 mg/L all year
006Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
006Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
006Lead, total [as Pb]DAILY MX <= 50 ug/L all year
006Lead, total [as Pb]DAILY MX <= 50 ug/L all year
006BenzeneDAILY MX <= 50 ug/L all year
006BenzeneDAILY MX <= 50 ug/L all year
006BTEXDAILY MX <= 250 ug/L all year
006BTEXDAILY MX <= 250 ug/L all year
006Flow, in conduit or thru treatment plantMO AVG report only all year
006Flow, in conduit or thru treatment plantMO AVG report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
101Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
101ChloroformMO AVG <= .111 mg/L all year
101ChloroformDAILY MX <= .325 mg/L all year
101ChloroformMO AVG <= .467 lb/d all year
101ChloroformDAILY MX <= 1.37 lb/d all year
101Flow, in conduit or thru treatment plantMO AVG report only all year
101Flow, in conduit or thru treatment plantDAILY MX report only all year
201Oil & GreaseDAILY MX <= 15 mg/L all year
201Carbon, tot organic [TOC]DAILY MX <= 50 mg/L all year
201Flow, in conduit or thru treatment plantMO AVG report only all year
201Flow, in conduit or thru treatment plantDAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states