ARCONIC US, LLC

NPDES permit IN0001210 · Major NON-POTW · effective, expires 2029-07-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

0values over a limit
0required values missing, on 0 form(s)
0of 32 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among IN permits in EPA's filings — check your permit).

Limits in force (117)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX report only all year
001Precipitation, total defined period/inMO TOTAL report only all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG <= 20 mg/L all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX report only all year
001Oil and grease, hexane extr methodMO AVG <= 10 mg/L all year
001Oil and grease, hexane extr methodDAILY MX <= 15 mg/L all year
001Oil and grease, hexane extr methodMO AVG report only all year
001Oil and grease, hexane extr methodDAILY MX report only all year
001Cyanide, total [as CN]MO AVG report only (alert) Jan
001Cyanide, total [as CN]MO AVG report only Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001Cyanide, total [as CN]DAILY MX < .07 mg/L (alert) Jan
001Cyanide, total [as CN]DAILY MX report only Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001Cyanide, total [as CN]MO AVG report only (alert) Jan
001Cyanide, total [as CN]MO AVG report only Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001Cyanide, total [as CN]DAILY MX report only (alert) Jan
001Cyanide, total [as CN]DAILY MX report only Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001Chloride [as Cl]MO AVG <= 370 mg/L all year
001Chloride [as Cl]DAILY MX <= 740 mg/L all year
001Chloride [as Cl]MO AVG report only all year
001Chloride [as Cl]DAILY MX report only all year
001Zinc, total recoverableMO AVG <= .2 mg/L all year
001Zinc, total recoverableDAILY MX <= .44 mg/L all year
001Zinc, total recoverableMO AVG report only all year
001Zinc, total recoverableDAILY MX report only all year
001Aluminum, total recoverableMO AVG report only all year
001Aluminum, total recoverableDAILY MX report only all year
001Aluminum, total recoverableMO AVG report only all year
001Aluminum, total recoverableDAILY MX report only all year
001Vanadium, total recoverableMO AVG report only all year
001Vanadium, total recoverableDAILY MX report only all year
001Vanadium, total recoverableMO AVG report only all year
001Vanadium, total recoverableDAILY MX report only all year
001Lithium, total [as Li]MO AVG report only all year
001Lithium, total [as Li]DAILY MX report only all year
001Lithium, total [as Li]MO AVG report only all year
001Lithium, total [as Li]DAILY MX report only all year
001Polychlorinated biphenyls [PCBs]MO AVG < .3 ug/L all year
001Polychlorinated biphenyls [PCBs]DAILY MX < .3 ug/L all year
001Polychlorinated biphenyls [PCBs]MO AVG report only all year
001Polychlorinated biphenyls [PCBs]DAILY MX 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
001Toxicity [acute], Ceriodaphnia dubiaDAILY MX <= 1 tox acute (alert) Jan, Jul
001Toxicity [acute], Ceriodaphnia dubiaDAILY MX <= 1 tox acute (alert) Feb, Aug
001Toxicity [chronic], Ceriodaphnia dubiaDAILY MX <= 1 tox chronic (alert) Jan, Jul
001Toxicity [chronic], Ceriodaphnia dubiaDAILY MX <= 1 tox chronic (alert) Feb, Aug
001Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX <= 1 tox acute (alert) Feb, Aug
001Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX <= 1 tox acute (alert) Jan, Jul
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]DAILY MX <= 1 tox chronic (alert) Jan, Jul
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]DAILY MX <= 1 tox chronic (alert) Feb, Aug
001Mercury, total recoverableMO AVG report only Jun, Dec
001Mercury, total recoverableMO AVG report only Jun, Dec
001Mercury, total recoverableDAILY MX report only Jun, Dec
001Mercury, total recoverableDAILY MX report only Jun, Dec
001Mercury, total recoverableMO AVG report only Jun, Dec
001Mercury, total recoverableMO AVG report only Jun, Dec
001Mercury, total recoverableDAILY MX report only Jun, Dec
001Mercury, total recoverableDAILY MX report only Jun, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
001Flow, totalMO TOTAL report only all year
102pHDAILY MN >= 6 SU all year
102pHDAILY MX <= 9 SU all year
102Solids, total suspendedMO AVG report only all year
102Solids, total suspendedDAILY MX report only all year
102Solids, total suspendedMO AVG <= 33.98 lb/d all year
102Solids, total suspendedDAILY MX <= 67.95 lb/d all year
102Oil and grease, hexane extr methodMO AVG report only Mar, Jun, Sep, Dec
102Oil and grease, hexane extr methodDAILY MX report only Mar, Jun, Sep, Dec
102Oil and grease, hexane extr methodMO AVG <= 21.8 lb/d Mar, Jun, Sep, Dec
102Oil and grease, hexane extr methodDAILY MX <= 34.06 lb/d Mar, Jun, Sep, Dec
102Cyanide, total [as CN]MO AVG report only (alert) Mar
102Cyanide, total [as CN]MO AVG report only Jun, Sep, Dec
102Cyanide, total [as CN]DAILY MX < .07 mg/L (alert) Mar
102Cyanide, total [as CN]DAILY MX report only Jun, Sep, Dec
102Cyanide, total [as CN]MO AVG <= .12 lb/d (alert) Mar
102Cyanide, total [as CN]MO AVG <= .12 lb/d Jun, Sep, Dec
102Cyanide, total [as CN]DAILY MX <= .29 lb/d (alert) Mar
102Cyanide, total [as CN]DAILY MX <= .29 lb/d Jun, Sep, Dec
102Chloride [as Cl]MO AVG report only all year
102Chloride [as Cl]DAILY MX report only all year
102Chloride [as Cl]MO AVG report only all year
102Chloride [as Cl]DAILY MX report only all year
102Zinc, total recoverableMO AVG report only Mar, Jun, Sep, Dec
102Zinc, total recoverableDAILY MX report only Mar, Jun, Sep, Dec
102Zinc, total recoverableMO AVG <= 1.03 lb/d Mar, Jun, Sep, Dec
102Zinc, total recoverableDAILY MX <= 2.45 lb/d Mar, Jun, Sep, Dec
102Aluminum, total recoverableMO AVG <= .12 mg/L all year
102Aluminum, total recoverableDAILY MX <= .29 mg/L all year
102Aluminum, total recoverableMO AVG report only all year
102Aluminum, total recoverableDAILY MX report only all year
102Chromium, total recoverableMO AVG report only all year
102Chromium, total recoverableDAILY MX report only all year
102Chromium, total recoverableMO AVG <= .19 lb/d all year
102Chromium, total recoverableDAILY MX <= .45 lb/d all year
102Vanadium, total recoverableMO AVG report only all year
102Vanadium, total recoverableDAILY MX report only all year
102Vanadium, total recoverableMO AVG report only all year
102Vanadium, total recoverableDAILY MX report only all year
102Flow, in conduit or thru treatment plantMO AVG report only all year
102Flow, in conduit or thru treatment plantDAILY MX report only all year
102Chlorine, total residualMO AVG < .06 mg/L all year
102Chlorine, total residualDAILY MX < .06 mg/L all year
102Chlorine, total residualMO AVG report only all year
102Chlorine, total residualDAILY MX report only all year
102E. coli, colony forming units [CFU]MO GEO <= 125 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
102E. coli, colony forming units [CFU]DAILY MX <= 235 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
102BOD, carbonaceous [5 day, 20 C]MO AVG <= 20 mg/L all year
102BOD, carbonaceous [5 day, 20 C]DAILY MX <= 30 mg/L all year
102BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
102BOD, carbonaceous [5 day, 20 C]DAILY 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