Drexel Chemical Company

NPDES permit TN0058831 · Minor NON-POTW · effective, expires 2031-06-30 · 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

10values over a limit
10required values missing, on 1 form(s)
5of 60 forms filed late

Last period with anything received: 2026-08-31. Most often over: Chlorine, total residual (10).

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 (70)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001pHDAILY MN >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Nitrogen, ammonia total [as N]MO AVG <= .41 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= .78 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= .7 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 1.3 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG <= .011 mg/L all year
001Chlorine, total residualDAILY MX <= .019 mg/L all year
001IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM >= 100 % all year
001IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasMINIMUM >= 100 % all year
SW1BOD, 5-day, 20 deg. CDAILY MX <= 30 mg/L (alert) all year
SW1pHDAILY MN report only all year
SW1pHMAXIMUM report only all year
SW1Solids, total suspendedDAILY MX <= 100 mg/L (alert) all year
SW1Nitrogen, ammonia total [as N]DAILY MX <= 1.7 mg/L (alert) all year
SW1Nitrite + Nitrate total [as N]DAILY MX <= .68 mg/L (alert) all year
SW1Phosphorus, total [as P]DAILY MX <= 2 mg/L (alert) all year
SW1Iron, total [as Fe]DAILY MX report only all year
SW1Lead, total [as Pb]DAILY MX <= .075 mg/L (alert) all year
SW1Zinc, total [as Zn]DAILY MX <= .126 mg/L (alert) all year
SW1Oil and greaseDAILY MX <= 15 mg/L (alert) all year
SW1Intermittent discharge-assessmentVALUE report only (alert) all year
SW1Flow, in conduit or thru treatment plantMO AVG report only all year
SW1Flow, in conduit or thru treatment plantDAILY MX report only all year
SW2BOD, 5-day, 20 deg. CDAILY MX <= 30 mg/L (alert) all year
SW2pHDAILY MN report only all year
SW2pHMAXIMUM report only all year
SW2Solids, total suspendedDAILY MX <= 100 mg/L (alert) all year
SW2Nitrogen, ammonia total [as N]DAILY MX <= 1.7 mg/L all year
SW2Nitrite + Nitrate total [as N]DAILY MX <= .68 mg/L (alert) all year
SW2Phosphorus, total [as P]DAILY MX <= 2 mg/L (alert) all year
SW2Iron, total [as Fe]DAILY MX report only all year
SW2Lead, total [as Pb]DAILY MX <= .075 mg/L (alert) all year
SW2Zinc, total [as Zn]DAILY MX <= .126 mg/L (alert) all year
SW2Oil and greaseDAILY MX <= 15 mg/L (alert) all year
SW2Intermittent discharge-assessmentVALUE report only (alert) all year
SW2Flow, in conduit or thru treatment plantMO AVG report only all year
SW2Flow, in conduit or thru treatment plantDAILY MX report only all year
SW3BOD, 5-day, 20 deg. CDAILY MX <= 30 mg/L (alert) all year
SW3pHDAILY MN report only all year
SW3pHMAXIMUM report only all year
SW3Solids, total suspendedDAILY MX <= 100 mg/L (alert) all year
SW3Nitrogen, ammonia total [as N]DAILY MX <= 1.7 mg/L (alert) all year
SW3Nitrite + Nitrate total [as N]DAILY MX <= .68 mg/L (alert) all year
SW3Phosphorus, total [as P]DAILY MX <= 2 mg/L (alert) all year
SW3Iron, total [as Fe]DAILY MX report only all year
SW3Lead, total [as Pb]DAILY MX <= .075 mg/L (alert) all year
SW3Zinc, total [as Zn]DAILY MX <= .126 mg/L (alert) all year
SW3Oil and greaseDAILY MX <= 15 mg/L (alert) all year
SW3Intermittent discharge-assessmentVALUE report only (alert) 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
SW4BOD, 5-day, 20 deg. CDAILY MX <= 30 mg/L (alert) all year
SW4pHDAILY MN report only all year
SW4pHMAXIMUM report only all year
SW4Solids, total suspendedDAILY MX <= 100 mg/L (alert) all year
SW4Nitrogen, ammonia total [as N]DAILY MX <= 1.7 mg/L (alert) all year
SW4Nitrite + Nitrate total [as N]DAILY MX <= .68 mg/L (alert) all year
SW4Phosphorus, total [as P]DAILY MX <= 2 mg/L (alert) all year
SW4Iron, total [as Fe]DAILY MX report only all year
SW4Lead, total [as Pb]DAILY MX <= .075 mg/L (alert) all year
SW4Zinc, total [as Zn]DAILY MX <= .126 mg/L (alert) all year
SW4Oil and greaseDAILY MX <= 15 mg/L (alert) all year
SW4Intermittent discharge-assessmentVALUE report only (alert) all year
SW4Flow, in conduit or thru treatment plantMO AVG report only all year
SW4Flow, 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