CLARKSDALE POTW

NPDES permit MS0020311 · Major POTW · effective, expires 2028-04-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

EPA's record, 2025-09-01 to 2026-08-31

30values over a limit
0required values missing, on 0 form(s)
0of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (10), Solids, total suspended (6), Solids, suspended percent removal (5).

Reporting

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

Limits in force (59)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
001Oxygen, dissolved [DO]MINIMUM report only all year
001Oxygen, dissolved [DO]MAXIMUM report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 25 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMX WK AV <= 37.5 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMX WK AV <= 45 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 1043 lb/d May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMO AVG <= 1248 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMX WK AV <= 1564 lb/d May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMX WK AV <= 1877 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CMX WK AV report only all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CMX WK AV report only all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedMX WK AV <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 1248 lb/d all year
001Solids, total suspendedMX WK AV <= 1877 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedMX WK AV report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedMX WK AV report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]MX WK AV report only all year
001Nitrogen, total [as N]MX MO AV <= 567.5 lb/d all year
001Nitrogen, total [as N]MX WK AV <= 851.3 lb/d all year
001Nitrogen, total [as N]MX MO AV report only all year
001Nitrogen, total [as N]MX WK AV report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]MX WK AV report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 5 mg/L all year
001Nitrogen, ammonia total [as N]MX WK AV <= 7.5 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 208 lb/d all year
001Nitrogen, ammonia total [as N]MX WK AV <= 313 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MX WK AV report only all year
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MX WK AV report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]MX WK AV report only all year
001Phosphorus, total [as P]MO AVG <= 242 lb/d all year
001Phosphorus, total [as P]MX WK AV <= 363 lb/d all year
001Phosphorus, total [as P]MX MO AV report only all year
001Phosphorus, total [as P]MX WK AV report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]MX WK AV report only all year
001Copper, total recoverableMO AVG <= .097 mg/L all year
001Copper, total recoverableMX WK AV <= .17 mg/L all year
001Flow, in conduit or thru treatment plantMO AVG <= 5 MGD all year
001Flow, in conduit or thru treatment plantMX WK AV report only all year
001E. coliMO AVG <= 126 #/100mL all year
001E. coliMX WK AV <= 410 #/100mL all year
001BOD, 5-day, percent removalMINIMUM >= 85 % all year
001Solids, suspended percent removalMINIMUM >= 85 % all year
001Sludge settleability 30 minuteMINIMUM report only all year
001Sludge settleability 30 minuteMAXIMUM 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