Confluence Rivers Utility Operating

NPDES permit MO0091529 · Minor NON-POTW · expired, expires 2025-12-31 · 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 2025-12-31 and is expired: 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

5values over a limit
0required values missing, on 0 form(s)
0of 19 forms filed late

Last period with anything received: 2026-07-31. Most often over: E. coli (4), Nitrogen, ammonia total [as N] (1).

Reporting

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

Limits in force (44)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 30 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, ammonia total [as N]DAILY MX <= 8.4 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 12.1 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 8.4 mg/L Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 8.4 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 12.1 mg/L Jan, Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 10.1 mg/L Mar, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 8.4 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 10.1 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 8.4 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 1.2 mg/L Sep
001Nitrogen, ammonia total [as N]MO AVG <= 2.1 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= .9 mg/L Jul, Aug
001Nitrogen, ammonia total [as N]MO AVG <= 1.8 mg/L Oct
001Nitrogen, ammonia total [as N]MO AVG <= 3.1 mg/L Jan, Feb
001Nitrogen, ammonia total [as N]MO AVG <= 2.7 mg/L Mar, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 2.4 mg/L Nov
001Nitrogen, ammonia total [as N]MO AVG <= 1.3 mg/L Jun
001Nitrogen, ammonia total [as N]MO AVG <= 2.1 mg/L Apr
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 MAX report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]MO AVG report only 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
001E. coliDAILY MX <= 1030 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coli30DA GM <= 206 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
INFNitrogen, ammonia total [as N]DAILY MX report only all year
INFNitrogen, ammonia total [as N]MO AVG report only all year
INFNitrogen, Kjeldahl, total [as N]DAILY MX report only all year
INFNitrogen, Kjeldahl, total [as N]MO AVG report only all year
INFNitrite + Nitrate total [as N]DAILY MX report only all year
INFNitrite + Nitrate total [as N]MO AVG report only all year
INFPhosphorus, total [as P]DAILY MX report only all year
INFPhosphorus, total [as P]MO AVG 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