Clean Water Act discharge permit · NPDES SD0020699

CLEAR LAKE, CITY OF, Clear Lake, SD: NPDES SD0020699 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
10Pollutants under a numeric limit
5Pollutants with an effluent exceedance

CLEAR LAKE, CITY OF, held by Clear Lake, City of, holds NPDES permit SD0020699, which discharges to Unnamed Tributary Of Hidewood Creek. EPA’s file records it issued December 31, 2012 and expiring December 31, 2017. 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	CLEAR LAKE, CITY OF
Permittee as filed	Clear Lake, City of
NPDES ID	SD0020699
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	December 31, 2012
Expiration date	December 31, 2017
Issuing agency	SDDENR
Address	Clear Lake, SD 57226
Receiving water	Unnamed tributary of Hidewood Creek
Subwatershed	Lake View Cemetery (HUC 101702020403)

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

Effluent limits and exceedances

17Pollutants on file
10Under a numeric limit
17With a violation of any kind
5With 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
Nitrogen, ammonia total [as N]	4	114	32	September 30, 2025	235% over the limit
E. coli, colony forming units [CFU]	4	18	9	August 31, 2025	919% over the limit
Solids, total suspended	2	89	7	April 30, 2009	63% over the limit
pH	2	88	4	May 31, 2010
BOD, 5-day, 20 deg. C	2	88	3	January 31, 2020	80% over the limit
Temperature, water deg. centigrade	2	86	0
Flow rate	2	85	0
Coliform, fecal general	2	44	0
Chlorine, total residual	0	41	0
Duration of discharge	1	7	0
Flow, total	1	4	0
Nitrogen, total [as N]	0	3	0
Phosphorus, total [as P]	0	3	0
Flow	0	3	0
Flowing, Receiving Stream	0	2	0
Toxicity [acute], Ceriodaphnia dubia	0	1	0
Toxicity [acute], Pimephales promelas [Fathead Minnow]	0	1	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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES SD0020699.

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.

Watch this permit

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How we handle your data → Privacy

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 SD0020699 there.

Nearby on the register

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