Clean Water Act discharge permit · NPDES SD0020044

SPEARFISH, CITY OF, Spearfish, SD: NPDES SD0020044 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
41Pollutants under a numeric limit
7Pollutants with an effluent exceedance

SPEARFISH, CITY OF, held by Spearfish, City of, holds NPDES permit SD0020044, which discharges to Spring Creek. EPA’s file records it issued January 25, 2005 and expiring March 31, 2010. 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 filed	SPEARFISH, CITY OF
Permittee as filed	Spearfish, City of
NPDES ID	SD0020044
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Major discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	January 25, 2005
Expiration date	March 31, 2010
Issuing agency	SDDENR
Address	Spearfish, SD 57783
Receiving water	SPRING CREEK
Subwatershed	Redwater Creek (HUC 101202030401)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

43Pollutants on file
41Under a numeric limit
17With a violation of any kind
7With an effluent exceedance

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 measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
BOD, 5-day, 20 deg. C	6	3	3	October 31, 2014	60% over the limit
Chlorine, total residual	3	2	2	May 31, 2005	7,584% over the limit
Toxicity [acute], Ceriodaphnia dubia	0	2	2	March 31, 2024	100% over the limit
Coliform, fecal general	5	2	1	June 30, 2019	590% over the limit
Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia	2	2	1	June 30, 2000
Solids, total suspended	6	1	1	October 31, 2014	25% over the limit
Toxicity [chronic], Ceriodaphnia dubia	0	1	1	March 31, 2024	32% over the limit
Nitrogen, nitrate total [as N]	6	4	0
Conductivity	4	4	0
pH	6	2	0
Alkalinity, total [as CaCO3]	4	2	0
Nitrogen, nitrite total [as N]	2	2	0
Nitrogen, Kjeldahl, total [as N]	2	2	0
Chloride [as Cl]	2	2	0
Sulfate, total [as SO4]	2	2	0
Solids, total dissolved	2	2	0
Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas	2	1	0
Nitrogen, ammonia total [as N]	10	0	0
Temperature, water deg. centigrade	4	0	0
Flow rate	4	0	0
BOD, carbonaceous [5 day, 20 C]	4	0	0
Oxygen, dissolved [DO]	2	0	0
Oil & Grease	2	0	0
Cyanide, weak acid, dissociable	2	0	0
Cyanide, total [as CN]	2	0	0
Arsenic, total [as As]	2	0	0
Beryllium, total [as Be]	2	0	0
Cadmium, total [as Cd]	2	0	0
Chromium, total [as Cr]	2	0	0
Copper, total [as Cu]	2	0	0
Lead, total [as Pb]	2	0	0
Thallium, total [as Tl]	2	0	0
Molybdenum, total [as Mo]	2	0	0
Nickel, total [as Ni]	2	0	0
Silver, total [as Ag]	2	0	0
Zinc, total [as Zn]	2	0	0
Antimony, total [as Sb]	2	0	0
Selenium, total [as Se]	2	0	0
Phenols	2	0	0
Mercury, total [as Hg]	2	0	0
BOD, 5-day, percent removal	2	0	0
Solids, suspended percent removal	2	0	0
Oil and grease visual	2	0	0

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

13Single-event violations

Date	What EPA recorded	Agency
September 9, 2026	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	EP6
August 27, 2026	PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]	ST6
August 24, 2026	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
August 21, 2026	Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	ST6
August 21, 2026	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
July 8, 2026	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
January 29, 2026	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
May 4, 2025	Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	ST6
July 2, 2024	Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment	ST6
July 2, 2024	Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment	ST6
June 29, 2023	PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]	ST6
June 23, 2023	Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment	ST6
June 23, 2023	Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment	ST6

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 September 15, 2026.

This public-records page covers Clean Water Act discharge permit NPDES SD0020044, held by SPEARFISH, CITY OF of Spearfish, SD, which discharges to Spring Creek in the Redwater Creek subwatershed (HUC 101202030401). The permit is listed as administratively continued, a Major Discharger class, with 43 pollutants on file, 41 under a numeric limit, and 7 with an effluent exceedance.