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Clean Water Act discharge permit · NPDES SD0023434

HURON, CITY OF, Huron, SD: NPDES SD0023434 discharge permit, effluent exceedances, inspections, penalties

HURON, CITY OF, held by Huron, City of, holds NPDES permit SD0023434, which discharges to James River. EPA’s file records it issued April 1, 2013 and expiring March 31, 2018. 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 filedHURON, CITY OF
Permittee as filedHuron, City of
NPDES IDSD0023434
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
IssuedApril 1, 2013
Expiration dateMarch 31, 2018
Issuing agencySDDANR
AddressHuron, SD 57350
Receiving waterJAMES RIVER
SubwatershedCain Creek-James River (HUC 101600061012)
Program components on filePOTW, Pretreatment
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
pH1455July 31, 2007
E. coli, colony forming units [CFU]420
BOD, 5-day, 20 deg. C2010
Toxicity [acute], Ceriodaphnia dubia110
Toxicity [acute], Pimephales promelas [Fathead Minnow]110
Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia110
Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas110
Nitrogen, total [as N]010
Phosphorus, total [as P]010
Cyanide, weak acid, dissociable010
Cyanide, total [as CN]010
Hardness, total [as CaCO3]010
Arsenic, total recoverable010
Selenium, total recoverable010
Thallium, total recoverable010
Beryllium, total recoverable [as Be]010
Nickel, total recoverable010
Silver total recoverable010
Zinc, total recoverable010
Aluminum, total recoverable010
Cadmium, total recoverable010
Lead, total recoverable010
Chromium, total recoverable010
Copper, total recoverable010
Molybdenum, total recoverable010
Antimony, total recoverable010
Phenols010
Mercury, total recoverable010
Report due [yrmoda]010
Temperature, water deg. centigrade2000
Flow rate2000
Solids, total suspended2000
Nitrogen, ammonia total [as N]800
Flow, total500
Duration of discharge500
DMR submitted300
Coliform, fecal general200
Oil and grease, hexane extr method100
Toxicity [chronic], 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
August 19, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentST6
April 1, 2025PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
March 26, 2025Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentST6
October 20, 2024PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
October 14, 2024Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentST6
September 11, 2024PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
September 5, 2024Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentST6

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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Nearby on the register

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

What this page shows

This public-records page covers Clean Water Act NPDES permit SD0023434, held by Huron, City of, for the HURON, CITY OF facility, which discharges to the JAMES RIVER within the Cain Creek-James River (HUC 101600061012) subwatershed. The permit is listed as administratively continued, a Major Discharger class, with 18 pollutants under a numeric limit and 1 pollutant with an effluent exceedance.