Darling Ingredients Inc.

NPDES permit TN0000931 · Minor NON-POTW · effective, expires 2030-08-31 · 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

0values over a limit
0required values missing, on 0 form(s)
0of 35 forms filed late

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

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among TN permits in EPA's filings — check your permit).

Limits in force (74)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 10.5 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 15.8 lb/d all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 220 lb/d all year
001Solids, total suspendedDAILY MX <= 440 lb/d all year
001Solids, total suspendedMO AVG <= 132 lb/d all year
001Solids, total suspendedDAILY MX <= 264 lb/d all year
001Solids, total suspendedMO AVG <= 44 lb/d all year
001Solids, total suspendedDAILY MX <= 88 lb/d all year
001Nitrogen, total [as N]MO AVG <= 134 mg/L all year
001Nitrogen, total [as N]DAILY MX <= 194 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 5.3 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX <= 8.8 lb/d all year
001Oil and greaseMO AVG <= 100 lb/d all year
001Oil and greaseDAILY MX <= 200 lb/d all year
001Oil and greaseMO AVG <= 60 lb/d all year
001Oil and greaseDAILY MX <= 120 lb/d all year
001Oil and greaseMO AVG <= 20 lb/d all year
001Oil and greaseDAILY MX <= 40 lb/d all year
001Floating solids, waste or visible foam-visualMO AVG report only all year
001Floating solids, waste or visible foam-visualDAILY 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
001E. coliMO AVG <= 126 #/100mL all year
001E. coliDAILY MX <= 410 #/100mL all year
001UV Light WorkingMO AVG report only all year
001Coliform, fecal generalDAILY MX <= 400 MPN/100mL all year
01ABOD, 5-day, 20 deg. CDAILY MX report only all year
01ApHVALUE report only all year
01ASolids, total suspendedDAILY MX report only all year
01ANitrogen, total [as N]MO TOTAL report only all year
01ANitrogen, total [as N]DAILY MX report only all year
01ANitrogen, ammonia total [as N]DAILY MX report only all year
01ANitrogen, Kjeldahl, total [as N]DAILY MX report only all year
01ANitrite + Nitrate total [as N]DAILY MX report only all year
01AFlow, in conduit or thru treatment plantMO TOTAL report only all year
01AE. coliDAILY MX report only all year
SW3BOD, 5-day, 20 deg. CDAILY MX report only all year
SW3pHVALUE report only all year
SW3Solids, total suspendedDAILY MX report only all year
SW3Nitrite + Nitrate total [as N]DAILY MX report only all year
SW3Oil and greaseDAILY MX report only all year
SW3Flow, in conduit or thru treatment plantMO AVG report only all year
SW3Flow, in conduit or thru treatment plantDAILY MX report only all year
SW3E. coliDAILY MX report only all year
SW3Coliform, fecal generalDAILY MX report only all year
SW3Chemical Oxygen Demand [COD]DAILY MX report only all year
SW4ABOD, 5-day, 20 deg. CDAILY MX report only all year
SW4ApHVALUE report only all year
SW4ASolids, total suspendedDAILY MX report only all year
SW4ANitrite + Nitrate total [as N]DAILY MX report only all year
SW4AOil and greaseDAILY MX report only all year
SW4AFlow, in conduit or thru treatment plantMO AVG report only all year
SW4AFlow, in conduit or thru treatment plantDAILY MX report only all year
SW4AE. coliDAILY MX report only all year
SW4AColiform, fecal generalDAILY MX report only all year
SW4AChemical Oxygen Demand [COD]DAILY MX report only all year
SW4BFlow, in conduit or thru treatment plantMO AVG report only all year
SW4BFlow, in conduit or thru treatment plantDAILY MX report only all year
SW4BE. coliDAILY MX report only all year
SW4BColiform, fecal generalDAILY MX report only all year
SW4DFlow, in conduit or thru treatment plantMO AVG report only all year
SW4DFlow, in conduit or thru treatment plantDAILY MX report only all year
SW4DE. coliDAILY MX report only all year
SW4DColiform, fecal generalDAILY MX report only all year
SW4EFlow, in conduit or thru treatment plantMO AVG report only all year
SW4EFlow, in conduit or thru treatment plantDAILY MX report only all year
SW4EE. coliDAILY MX report only all year
SW4EColiform, fecal generalDAILY 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