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Clean Water Act discharge permit · NPDES SD0023574

RAPID CITY, CITY OF, Rapid City, SD: NPDES SD0023574 discharge permit, effluent exceedances, inspections, penalties

RAPID CITY, CITY OF, held by Rapid City, City of, holds NPDES permit SD0023574, which discharges to Rapid Creek. EPA’s file records it issued January 17, 2001 and expiring March 31, 2006. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedRAPID CITY, CITY OF
Permittee as filedRapid City, City of
NPDES IDSD0023574
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
IssuedJanuary 17, 2001
Expiration dateMarch 31, 2006
Issuing agencySDDENR
AddressRapid City, SD 57703
Receiving waterRAPID CREEK
SubwatershedCyclone Ditch-Rapid Creek (HUC 101201100204)

Cited to the EPA ICIS-NPDES permit file (ECHO 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, fecal general22424August 31, 201699,999% over the limit
Oxygen, dissolved [DO]41111September 30, 202215% over the limit
E. coli, colony forming units [CFU]01010August 31, 20252,354% over the limit
BOD, 5-day, 20 deg. C944September 30, 200323% over the limit
pH222September 30, 2004
Chlorine, total residual111July 31, 20014,111% over the limit
Oil and grease visual111August 31, 20172,147,483,650% over the limit
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia450
IC25 Static Renewal 7 Day Chronic Chrpimephales450
Flow, in conduit or thru treatment plant420
BOD, carbonaceous [5 day, 20 C]220
Report due [yrmoda]120
Solids, total suspended300
Temperature, water deg. centigrade200
Nitrogen, ammonia total [as N]200
Nitrogen, nitrate total [as N]200
Oil & Grease100
BOD, 5-day, percent removal100
Solids, suspended percent removal100

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
April 1, 2026PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
March 26, 2026Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
March 24, 2026PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
March 18, 2026Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
December 7, 2025PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
December 1, 2025Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
September 10, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentST6
July 31, 2025PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
July 25, 2025Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
July 25, 2025Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
May 20, 2025PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
May 19, 2025PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
May 18, 2025PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
May 14, 2025Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
May 13, 2025Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
May 12, 2025Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
January 4, 2025PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
December 29, 2024Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
July 7, 2024PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
July 1, 2024Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentST6
June 3, 2024PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
May 28, 2024Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
May 22, 2024PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
May 16, 2024Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
April 27, 2024PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
April 21, 2024Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
April 21, 2024PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
April 15, 2024Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
March 22, 2024Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentST6
December 23, 2023PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
December 17, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
November 13, 2023PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
November 7, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
October 25, 2023PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
October 20, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
October 19, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
July 26, 2023PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
July 20, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
July 15, 2023PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
July 9, 2023Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
May 25, 2023Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
January 31, 2018Monitoring Violations - Frequency of Sampling ViolationST6

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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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID SD0023574 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.