Milbank, City of

NPDES permit SD0020371 · Major POTW · administratively continued, expires 2009-03-31 · 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 2009-03-31 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

0values over a limit
0required values missing, on 0 form(s)
0of 23 forms filed late

Last period with anything received: 2026-07-31.

Reporting

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

Limits in force (54)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigrade30DA AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001Flow rate30DA AVG report only all year
001Flow rateDAILY MX report only all year
001Conductivity30DA AVG report only all year
001ConductivityDAILY MX report only all year
001Oxygen, dissolved [DO]DAILY MN >= 5 mg/L Apr
001Oxygen, dissolved [DO]DAILY MN >= 6.5 mg/L May, Jun, Jul, Aug, Sep
001Oxygen, dissolved [DO]DAILY MN >= 6.5 mg/L Oct
001Oxygen, dissolved [DO]DAILY MN >= 6.5 mg/L Jan, Feb, Mar, Nov, Dec
001BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L Apr
001BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L Oct
001BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L Jan, Feb, Mar, Nov, Dec
001BOD, 5-day, 20 deg. CMX 7D AV <= 30 mg/L Apr
001BOD, 5-day, 20 deg. CMX 7D AV <= 20 mg/L May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMX 7D AV <= 20 mg/L Oct
001BOD, 5-day, 20 deg. CMX 7D AV <= 30 mg/L Jan, Feb, Mar, Nov, Dec
001BOD, 5-day, 20 deg. C30DA AVG report only all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Alkalinity, total [as CaCO3]30DA AVG report only all year
001Alkalinity, total [as CaCO3]DAILY MX report only all year
001Solids, total suspended30DA AVG <= 30 mg/L all year
001Solids, total suspendedMX 7D AV <= 45 mg/L all year
001Solids, total suspended30DA AVG report only all year
001Oil & GreaseDAILY MX <= 10 mg/L all year
001Nitrogen, ammonia total [as N]30DA AVG <= 2 mg/L Apr
001Nitrogen, ammonia total [as N]30DA AVG <= 1 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]30DA AVG <= 1.6 mg/L Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 11.4 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 3.4 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 1.9 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 3.2 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 20 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, nitrate total [as N]30DA AVG report only all year
001Nitrogen, nitrate total [as N]DAILY MX report only all year
001Chlorine, total residualDAILY MX <= .019 mg/L all year
001Coliform, fecal general30DA GEO <= 1000 #/100mL May, Jun, Jul, Aug, Sep
001Coliform, fecal generalDAILY MX <= 2000 #/100mL May, Jun, Jul, Aug, Sep
001BOD, carbonaceous [5 day, 20 C]30DA AVG report only all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Oil and grease visualDAILY MX <= 0 N=0;Y=1 all year
001Report due [yrmoda]DAILY MX report only all year
001IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM >= 67 % Apr
001IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM >= 63 % May, Jun, Jul, Aug, Sep
001IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM >= 55 % Oct
001IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM >= 53 % Jan, Feb, Mar, Nov, Dec
001IC25 Static Renewal 7 Day Chronic ChrpimephalesMINIMUM >= 67 % Apr
001IC25 Static Renewal 7 Day Chronic ChrpimephalesMINIMUM >= 63 % May, Jun, Jul, Aug, Sep
001IC25 Static Renewal 7 Day Chronic ChrpimephalesMINIMUM >= 55 % Oct
001IC25 Static Renewal 7 Day Chronic ChrpimephalesMINIMUM >= 53 % Jan, Feb, Mar, 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