Velarion Records

Clean Water Act discharge permit · NPDES SD0020176

PIERRE, CITY OF, Pierre, SD: NPDES SD0020176 discharge permit, effluent exceedances, inspections, penalties

PIERRE, CITY OF, held by Pierre, City of, holds NPDES permit SD0020176, which discharges to Lake Sharpe/Missouri River. EPA’s file records it issued September 25, 2015 and expiring September 30, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedPIERRE, CITY OF
Permittee as filedPierre, City of
NPDES IDSD0020176
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedSeptember 25, 2015
Expiration dateSeptember 30, 2020
Issuing agencySDDENR
AddressPierre, SD 57501
Receiving waterLAKE SHARPE/MISSOURI RIVER
SubwatershedBad River-Missouri River (HUC 101401010302)
NAICS221320 – Sewage Treatment Facilities
SIC4952 – Sewerage Systems

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Coliform, total general21414August 31, 2022750% over the limit
Coliform, fecal general01414September 30, 20158,650% over the limit
Solids, total suspended31010June 30, 2025249% over the limit
BOD, 5-day, 20 deg. C366June 30, 2022183% over the limit
Chlorine, total residual166December 31, 20151,216% over the limit
E. coli, colony forming units [CFU]244June 30, 2024930% over the limit
pH233November 30, 2015
Toxicity [acute], Pimephales promelas [Fathead Minnow]122December 31, 2022230% over the limit
Solids, suspended percent removal122June 30, 2022100% over the limit
BOD, 5-day, percent removal111June 30, 202215% over the limit
Antimony, total [as Sb]010
Report due [yrmoda]600
Temperature, water deg. centigrade200
Flow rate200
Oxygen, dissolved [DO]200
Nitrogen, ammonia total [as N]200
Cyanide, weak acid, dissociable200
Cyanide, total [as CN]200
Hardness, total [as CaCO3]200
Arsenic, total recoverable200
Selenium, total recoverable200
Thallium, total recoverable200
Beryllium, total recoverable [as Be]200
Nickel, total recoverable200
Silver total recoverable200
Zinc, total recoverable200
Cadmium, total recoverable200
Lead, total recoverable200
Chromium, total recoverable200
Copper, total recoverable200
Molybdenum, total recoverable200
Antimony, total recoverable200
Phenols200
Mercury, total recoverable200
Oil and grease, hexane extr method100
Nitrogen, total [as N]100
Phosphorus, total [as P]100
Peracetic Acid100
Toxicity [acute], Ceriodaphnia dubia100
Oil and grease visual100

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

DateWhat EPA recordedAgency
March 26, 2026Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
March 24, 2026Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentST6
March 15, 2026Failure to submit report to the permitting authority of any anticipated bypass [122.41(m)(3)(i)]ST6
September 1, 2025PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
August 26, 2025Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentST6
August 26, 2025Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
November 1, 2024Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
July 23, 2024Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
May 3, 2024Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
January 14, 2024Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
September 28, 2023PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
September 22, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
August 20, 2023PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
August 14, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
June 22, 2023PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
June 16, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
June 13, 2023PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
June 7, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
May 7, 2023PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
May 1, 2023Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
April 23, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

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