Pierre, City of

NPDES permit SD0020176 · Major POTW · effective, expires 2027-06-30 · 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.

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

0values over a limit
0required values missing, on 0 form(s)
2of 17 forms filed late

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

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (71)

OutfallParameterStatisticLimitMonths
002Temperature, water deg. centigrade30DA AVG report only all year
002Temperature, water deg. centigradeDAILY MX report only all year
002Flow rate30DA AVG report only all year
002Flow rateDAILY MX report only all year
002Oxygen, dissolved [DO]DAILY MN report only all year
002Oxygen, dissolved [DO]30DA AVG report only all year
002BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L all year
002BOD, 5-day, 20 deg. CMX 7D AV <= 45 mg/L all year
002BOD, 5-day, 20 deg. C30DA AVG report only all year
002pHDAILY MN >= 6.6 SU all year
002pHDAILY MX <= 8.3 SU all year
002Solids, total suspended30DA AVG <= 30 mg/L all year
002Solids, total suspendedMX 7D AV <= 45 mg/L all year
002Solids, total suspended30DA AVG report only all year
002Oil and grease, hexane extr methodDAILY MX <= 1 mg/L all year
002Nitrogen, total [as N]DAILY MX report only all year
002Nitrogen, ammonia total [as N]30DA AVG report only all year
002Nitrogen, ammonia total [as N]DAILY MX report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002Cyanide, free [as free]VALUE report only all year
002Cyanide, free [as free]VALUE report only all year
002Cyanide, total [as CN]VALUE report only all year
002Cyanide, total [as CN]VALUE report only all year
002Hardness, total [as CaCO3]DAILY MX report only all year
002Hardness, total [as CaCO3]VALUE report only all year
002Arsenic, total recoverableVALUE report only all year
002Arsenic, total recoverableVALUE report only all year
002Thallium, total recoverableVALUE report only all year
002Thallium, total recoverableVALUE report only all year
002Selenite, Total RecoverableVALUE report only all year
002Selenite, Total RecoverableVALUE report only all year
002Beryllium, total recoverable [as Be]VALUE report only all year
002Beryllium, total recoverable [as Be]VALUE report only all year
002Nickel, total recoverableVALUE report only all year
002Nickel, total recoverableVALUE report only all year
002Silver total recoverableVALUE report only all year
002Silver total recoverableVALUE report only all year
002Zinc, total recoverableVALUE report only all year
002Zinc, total recoverableVALUE report only all year
002Aluminum, total recoverableVALUE report only all year
002Aluminum, total recoverableVALUE report only all year
002Cadmium, total recoverableVALUE report only all year
002Cadmium, total recoverableVALUE report only all year
002Lead, total recoverableVALUE report only all year
002Lead, total recoverableVALUE report only all year
002Chromium, total recoverableDAILY MX report only all year
002Chromium, total recoverableVALUE report only all year
002Copper, total recoverableDAILY MX report only all year
002Copper, total recoverableVALUE report only all year
002Molybdenum, total recoverableVALUE report only all year
002Molybdenum, total recoverableVALUE report only all year
002Antimony, total recoverableVALUE report only all year
002Antimony, total recoverableVALUE report only all year
002PhenolsVALUE report only all year
002PhenolsVALUE report only all year
002E. coli, colony forming units [CFU]30DA GM <= 126 #/100mL May, Jun, Jul, Aug, Sep
002E. coli, colony forming units [CFU]DAILY MX <= 235 #/100mL May, Jun, Jul, Aug, Sep
002Selenate, Total RecoverableVALUE report only all year
002Selenate, Total RecoverableVALUE report only all year
002Toxicity [acute], Ceriodaphnia dubiaDAILY MX < 1 tox acute all year
002Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX < 1 tox acute all year
002Mercury, total [as Hg]VALUE report only all year
002Mercury, total [as Hg]VALUE report only all year
002Coliform, total general30DA GM <= 5000 #/100mL all year
002Coliform, total generalDAILY MX <= 20000 #/100mL all year
002BOD, 5-day, percent removalMO AV MN >= 85 % all year
002Solids, suspended percent removalMO AV MN >= 85 % all year
002Oil and grease visualDAILY MX <= 0 abst=0;prst=1 all year
002Report due [yrmoda]VALUE report only all year
002Report due [yrmoda]VALUE report only all year
002Report due [yrmoda]VALUE 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