Noble UA (North)

NPDES permit OK0031755 · Minor POTW · effective, expires 2030-10-31 · EPA's file as of 2026-09-19

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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

14values over a limit
6required values missing, on 1 form(s)
3of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (9), E. coli (4), Oxygen, dissolved [DO] (1).

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 (22)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]INST MIN >= 5.5 mg/L Jun, Jul, Aug, Sep, Oct
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L Apr, May
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 190.1 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG <= 4.1 mg/L all year
001Nitrogen, ammonia total [as N]WKLY AVG <= 6.2 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 26 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
001E. coliGEO MEAN <= 630 MPN/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001E. coliGEO MEAN <= 126 MPN/100mL May, Jun, Jul, Aug, Sep
001E. coliDAILY MX <= 2030 MPN/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001E. coliDAILY MX <= 406 MPN/100mL May, Jun, Jul, Aug, Sep
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 12 mg/L Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 18 mg/L Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 37.5 mg/L Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 76.1 lb/d Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 158.5 lb/d Jan, Feb, Mar, Apr, May, Nov, Dec

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