WARSAW BLACK OXIDE, INC.

NPDES permit IN0004278 · Major NON-POTW · effective, expires 2030-12-31 · 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.

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

23values over a limit
0required values missing, on 0 form(s)
0of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Zinc, total recoverable (19), Chloride [as Cl] (3), pH (1).

Reporting

Reports are due about 29 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (44)

OutfallParameterStatisticLimitMonths
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG <= 10 mg/L all year
001Solids, total suspendedDAILY MX <= 15 mg/L all year
001Solids, total suspendedMO AVG <= 2.92 lb/d all year
001Solids, total suspendedDAILY MX <= 4.38 lb/d 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 <= 2.92 lb/d all year
001Oil and grease, hexane extr methodDAILY MX <= 4.38 lb/d all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Chloride [as Cl]MO AVG report only all year
001Chloride [as Cl]DAILY MX report only all year
001Chloride [as Cl]MO AVG report only all year
001Chloride [as Cl]DAILY MX report only all year
001Sulfate, total [as SO4]DAILY MX report only all year
001Fluoride, total [as F]MO AVG report only all year
001Fluoride, total [as F]DAILY MX report only all year
001Fluoride, total [as F]MO AVG report only all year
001Fluoride, total [as F]DAILY MX report only all year
001Nickel, total recoverableMO AVG <= .16 mg/L all year
001Nickel, total recoverableDAILY MX <= .4 mg/L all year
001Nickel, total recoverableMO AVG <= .05 lb/d all year
001Nickel, total recoverableDAILY MX <= .12 lb/d all year
001Zinc, total recoverableMO AVG <= .28 mg/L all year
001Zinc, total recoverableDAILY MX <= .66 mg/L all year
001Zinc, total recoverableMO AVG <= .08 lb/d all year
001Zinc, total recoverableDAILY MX <= .19 lb/d all year
001Chromium, total recoverableMO AVG <= .47 mg/L all year
001Chromium, total recoverableDAILY MX <= .77 mg/L all year
001Chromium, total recoverableMO AVG <= .14 lb/d all year
001Chromium, total recoverableDAILY MX <= .22 lb/d all year
001Copper, total recoverableMO AVG <= .046 mg/L all year
001Copper, total recoverableDAILY MX <= .088 mg/L all year
001Copper, total recoverableMO AVG <= .013 lb/d all year
001Copper, total recoverableDAILY MX <= .026 lb/d all year
001Chromium, hexavalent dissolved [as Cr]MO AVG <= .01 mg/L all year
001Chromium, hexavalent dissolved [as Cr]DAILY MX <= .02 mg/L all year
001Chromium, hexavalent dissolved [as Cr]MO AVG <= .003 lb/d all year
001Chromium, hexavalent dissolved [as Cr]DAILY MX <= .006 lb/d 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
001Total toxic organics [TTO] [40 CFR433]DAILY MX <= 2.13 mg/L all year
001Flow, totalMO TOTAL 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