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NPDES permit MO0000299 · Major NON-POTW · administratively continued, expires 2024-12-31 · 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.

This permit expired on 2024-12-31 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

13values over a limit
30required values missing, on 1 form(s)
0of 36 forms filed late

Last period with anything received: 2026-07-31. Most often over: Chloride (12), 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 (96)

OutfallParameterStatisticLimitMonths
001Sulfate [as S]DAILY MX report only all year
001Sulfate [as S]MO AVG report only all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY MX <= 80 mg/L all year
001Solids, total suspendedMO AVG <= 60 mg/L all year
001Oil and grease [soxhlet extr.] tot.DAILY MX <= 15 mg/L all year
001Oil and grease [soxhlet extr.] tot.MO AVG <= 10 mg/L all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, 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 report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Fluoride, total [as F]DAILY MX <= 5.5 mg/L all year
001Fluoride, total [as F]MO AVG <= 3.6 mg/L all year
001Copper, total recoverableDAILY MX <= 64 ug/L all year
001Copper, total recoverableMO AVG <= 27.3 ug/L all year
001Chromium, hexavalent dissolved [as Cr]DAILY MX <= 15 ug/L all year
001Chromium, hexavalent dissolved [as Cr]MO AVG <= 7.4 ug/L all year
001TrichloroethyleneDAILY MX report only all year
001TrichloroethyleneMO AVG report only all year
001ChlorideDAILY MX <= 301 mg/L all year
001ChlorideMO AVG <= 211 mg/L all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Toxicity [chronic], Ceriodaphnia dubiaDAILY MX report only all year
001Toxicity [chronic], Pimephales promelas [Fathead Minnow]DAILY MX report only all year
001Chlorides + SulfatesDAILY MX <= 1000 mg/L all year
001Chlorides + SulfatesMO AVG <= 1000 mg/L all year
002Sulfate [as S]DAILY MX report only all year
002Sulfate [as S]MO AVG report only all year
002pHMINIMUM >= 6.5 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedDAILY MX <= 80 mg/L all year
002Solids, total suspendedMO AVG <= 60 mg/L all year
002Oil and grease [soxhlet extr.] tot.DAILY MX <= 15 mg/L all year
002Oil and grease [soxhlet extr.] tot.MO AVG <= 10 mg/L all year
002Nitrogen, total [as N]DAILY MX report only all year
002Nitrogen, total [as N]MO AVG report only all year
002Nitrogen, ammonia total [as N]DAILY MX report only all year
002Nitrogen, ammonia total [as N]MO AVG report only all year
002Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
002Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
002Nitrite + Nitrate total [as N]DAILY MX report only all year
002Nitrite + Nitrate total [as N]MO AVG report only all year
002Fluoride, total [as F]DAILY MX <= 5.5 mg/L all year
002Fluoride, total [as F]MO AVG <= 3.6 mg/L all year
002Copper, total recoverableDAILY MX <= 64 ug/L all year
002Copper, total recoverableMO AVG <= 27.3 ug/L all year
002Chromium, hexavalent dissolved [as Cr]DAILY MX <= 15 ug/L all year
002Chromium, hexavalent dissolved [as Cr]MO AVG <= 7.4 ug/L all year
002TrichloroethyleneDAILY MX report only all year
002TrichloroethyleneMO AVG report only all year
002ChlorideDAILY MX <= 301 mg/L all year
002ChlorideMO AVG <= 211 mg/L all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Toxicity [chronic], Ceriodaphnia dubiaDAILY MX report only all year
002Toxicity [chronic], Pimephales promelas [Fathead Minnow]DAILY MX report only all year
002Chlorides + SulfatesDAILY MX <= 1000 mg/L all year
002Chlorides + SulfatesMO AVG <= 1000 mg/L all year
003Sulfate [as S]DAILY MX report only all year
003Sulfate [as S]MO AVG report only all year
003pHMINIMUM >= 6.5 SU all year
003pHMAXIMUM <= 9 SU all year
003Solids, total suspendedDAILY MX <= 80 mg/L all year
003Solids, total suspendedMO AVG <= 60 mg/L all year
003Oil and grease [soxhlet extr.] tot.DAILY MX <= 15 mg/L all year
003Oil and grease [soxhlet extr.] tot.MO AVG <= 10 mg/L all year
003Nitrogen, total [as N]DAILY MX report only all year
003Nitrogen, total [as N]MO AVG report only all year
003Nitrogen, ammonia total [as N]DAILY MX report only all year
003Nitrogen, ammonia total [as N]MO AVG report only all year
003Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
003Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
003Nitrite + Nitrate total [as N]DAILY MX report only all year
003Nitrite + Nitrate total [as N]MO AVG report only all year
003Fluoride, total [as F]DAILY MX <= 5.5 mg/L all year
003Fluoride, total [as F]MO AVG <= 3.6 mg/L all year
003Copper, total recoverableDAILY MX <= 64 ug/L all year
003Copper, total recoverableMO AVG <= 27.3 ug/L all year
003Chromium, hexavalent dissolved [as Cr]DAILY MX <= 15 ug/L all year
003Chromium, hexavalent dissolved [as Cr]MO AVG <= 7.4 ug/L all year
003TrichloroethyleneDAILY MX report only all year
003TrichloroethyleneMO AVG report only all year
003ChlorideDAILY MX <= 301 mg/L all year
003ChlorideMO AVG <= 211 mg/L all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Toxicity [chronic], Ceriodaphnia dubiaDAILY MX report only all year
003Toxicity [chronic], Pimephales promelas [Fathead Minnow]DAILY MX report only all year
003Chlorides + SulfatesDAILY MX <= 1000 mg/L all year
003Chlorides + SulfatesMO AVG <= 1000 mg/L 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