Pleasant Oaks Sewer Improvement District #31

NPDES permit AR0041424 · Minor NON-POTW · expired, expires 2026-01-31 · 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.

This permit expired on 2026-01-31 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

17values over a limit
0required values missing, on 0 form(s)
4of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Solids, total suspended (7), BOD, carbonaceous [5 day, 20 C] (5), Nitrogen, ammonia total [as N] (4).

Reporting

Reports are due about 25 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (25)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]INST MIN >= 2 mg/L May, Jun, Jul, Aug, Sep, Oct
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 15 mg/L all year
001Solids, total suspendedDAILY MX <= 22.5 mg/L all year
001Solids, total suspendedMO AVG <= 2.5 lb/d all year
001Solids, total suspendedDAILY MX <= 3.8 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG <= 5 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 5 mg/L Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 6.1 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 7.5 mg/L Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= .8 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= .8 lb/d Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 1 lb/d Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 1.3 lb/d Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, 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 residualINST MAX <= .011 mg/L all year
001Coliform, fecal general30DA GEO <= 1000 #/100mL all year
001Coliform, fecal general7 DA GEO <= 2000 #/100mL all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 15 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 1.7 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 2.5 lb/d 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