USAF - Ellsworth AFB

NPDES permit SD0000281 · Major FEDERAL · administratively continued, expires 2014-12-31 · 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 2014-12-31 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
12required values missing, on 2 form(s)
0of 54 forms filed late

Last period with anything received: 2026-08-31.

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 (131)

OutfallParameterStatisticLimitMonths
001Flow rate30DA AVG report only all year
001Flow rateDAILY MX report only all year
001BOD, 5-day, 20 deg. C30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9.5 SU all year
001Benzene, ethylbenzene, toluene, xylene combination30DA AVG report only all year
001Benzene, ethylbenzene, toluene, xylene combinationDAILY MX report only all year
001Naphthalene30DA AVG report only all year
001NaphthaleneDAILY MX report only all year
001Floating solids, waste or visible foam-visualDAILY MX <= 0 N=0;Y=1 all year
001Hydrocarbons, petroleumDAILY MX <= 10 mg/L all year
001Oil and grease visualDAILY MX <= 0 N=0;Y=1 all year
002Flow rate30DA AVG report only all year
002Flow rateDAILY MX report only all year
002BOD, 5-day, 20 deg. C30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
002BOD, 5-day, 20 deg. CDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
002pHDAILY MN >= 6 SU all year
002pHDAILY MX <= 9.5 SU all year
002Benzene, ethylbenzene, toluene, xylene combination30DA AVG report only all year
002Benzene, ethylbenzene, toluene, xylene combinationDAILY MX report only all year
002Naphthalene30DA AVG report only all year
002NaphthaleneDAILY MX report only all year
002Floating solids, waste or visible foam-visualDAILY MX <= 0 N=0;Y=1 all year
002Hydrocarbons, petroleumDAILY MX <= 10 mg/L all year
002Oil and grease visualDAILY MX <= 0 N=0;Y=1 all year
003Flow rate30DA AVG report only all year
003Flow rateDAILY MX report only all year
003BOD, 5-day, 20 deg. C30DA AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
003BOD, 5-day, 20 deg. CDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
003pHDAILY MN >= 6 SU all year
003pHDAILY MX <= 9.5 SU all year
003Benzene, ethylbenzene, toluene, xylene combination30DA AVG report only all year
003Benzene, ethylbenzene, toluene, xylene combinationDAILY MX report only all year
003Naphthalene30DA AVG report only all year
003NaphthaleneDAILY MX report only all year
003Floating solids, waste or visible foam-visualDAILY MX <= 0 N=0;Y=1 all year
003Hydrocarbons, petroleumDAILY MX <= 10 mg/L all year
003Oil and grease visualDAILY MX <= 0 N=0;Y=1 all year
005Temperature, water deg. centigrade30DA AVG report only all year
005Temperature, water deg. centigradeDAILY MX report only all year
005Flow rate30DA AVG report only all year
005Flow rateDAILY MX report only all year
005Conductivity30DA AVG report only all year
005ConductivityDAILY MX report only all year
005Oxygen, dissolved [DO]DAILY MN report only all year
005BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L all year
005BOD, 5-day, 20 deg. CMX 7D AV <= 45 mg/L all year
005pHDAILY MN >= 6 SU all year
005pHDAILY MX <= 9 SU all year
005pHDAILY MN report only all year
005pHDAILY MX report only all year
005Alkalinity, total [as CaCO3]30DA AVG report only all year
005Alkalinity, total [as CaCO3]DAILY MX report only all year
005Solids, total suspended30DA AVG <= 30 mg/L all year
005Solids, total suspendedMX 7D AV <= 45 mg/L all year
005Oil & GreaseDAILY MX <= 10 mg/L all year
005Nitrogen, ammonia total [as N]30DA AVG <= 3.3 mg/L Aug
005Nitrogen, ammonia total [as N]30DA AVG <= 2.5 mg/L Sep
005Nitrogen, ammonia total [as N]30DA AVG <= 3.5 mg/L Oct
005Nitrogen, ammonia total [as N]30DA AVG <= 5 mg/L Nov
005Nitrogen, ammonia total [as N]30DA AVG <= 4.5 mg/L Jan
005Nitrogen, ammonia total [as N]30DA AVG <= 4 mg/L Feb
005Nitrogen, ammonia total [as N]30DA AVG <= 4 mg/L Mar
005Nitrogen, ammonia total [as N]30DA AVG <= 4.5 mg/L Apr
005Nitrogen, ammonia total [as N]30DA AVG <= 3.5 mg/L May
005Nitrogen, ammonia total [as N]30DA AVG <= 3 mg/L Jun
005Nitrogen, ammonia total [as N]30DA AVG <= 2 mg/L Jul
005Nitrogen, ammonia total [as N]30DA AVG <= 4 mg/L Dec
005Nitrogen, ammonia total [as N]DAILY MX <= 20 mg/L Aug
005Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Sep
005Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Oct
005Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Nov
005Nitrogen, ammonia total [as N]DAILY MX <= 8 mg/L Jan
005Nitrogen, ammonia total [as N]DAILY MX <= 10 mg/L Feb
005Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Mar
005Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Apr
005Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L May
005Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Jun
005Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L Jul
005Nitrogen, ammonia total [as N]DAILY MX <= 11 mg/L Dec
005Nitrogen, nitrate total [as N]30DA AVG report only all year
005Nitrogen, nitrate total [as N]DAILY MX report only all year
005Cyanide, weak acid, dissociableINST MAX report only all year
005Cyanide, weak acid, dissociableINST MAX report only all year
005Cyanide, total [as CN]INST MAX report only all year
005Cyanide, total [as CN]INST MAX report only all year
005Arsenic, total [as As]INST MAX report only all year
005Arsenic, total [as As]INST MAX report only all year
005Beryllium, total [as Be]INST MAX report only all year
005Beryllium, total [as Be]INST MAX report only all year
005Cadmium, total [as Cd]INST MAX report only all year
005Cadmium, total [as Cd]INST MAX report only all year
005Chromium, total [as Cr]INST MAX report only all year
005Chromium, total [as Cr]INST MAX report only all year
005Copper, total [as Cu]INST MAX report only all year
005Copper, total [as Cu]INST MAX report only all year
005Lead, total [as Pb]INST MAX report only all year
005Lead, total [as Pb]INST MAX report only all year
005Thallium, total [as Tl]INST MAX report only all year
005Thallium, total [as Tl]INST MAX report only all year
005Molybdenum, total [as Mo]INST MAX report only all year
005Molybdenum, total [as Mo]INST MAX report only all year
005Nickel, total [as Ni]INST MAX report only all year
005Nickel, total [as Ni]INST MAX report only all year
005Silver, total [as Ag]INST MAX report only all year
005Silver, total [as Ag]INST MAX report only all year
005Zinc, total [as Zn]INST MAX report only all year
005Zinc, total [as Zn]INST MAX report only all year
005Antimony, total [as Sb]INST MAX report only all year
005Antimony, total [as Sb]INST MAX report only all year
005Selenium, total [as Se]INST MAX report only all year
005Selenium, total [as Se]INST MAX report only all year
005PhenolsINST MAX report only all year
005PhenolsINST MAX report only all year
005Chlorine, total residualDAILY MX <= .019 mg/L all year
005E. coli, colony forming units [CFU]30DA GEO <= 630 CFU/100mL May, Jun, Jul, Aug, Sep
005E. coli, colony forming units [CFU]DAILY MX <= 1178 CFU/100mL May, Jun, Jul, Aug, Sep
005Mercury, total [as Hg]INST MAX report only all year
005Mercury, total [as Hg]INST MAX report only all year
005BOD, carbonaceous [5 day, 20 C]30DA AVG report only all year
005BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
005Oil and grease visualDAILY MX <= 0 N=0;Y=1 all year
005Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubiaDAILY MX <= 0 pass=0;fail=1 all year
005Pass/Fail Static Renewal 96Hr Acute Pimephales PromelasDAILY MX <= 0 pass=0;fail=1 all year
011pHDAILY MN >= 6 SU all year
011pHDAILY MX <= 9 SU all year
011Solids, total suspendedDAILY MX <= 90 mg/L all year
011Chlorine, total residualDAILY MX < .05 mg/L all year
011Flow, totalMO TOTAL report only all year
011Duration of dischargeMO TOTAL 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