Clean Water Act discharge permit · NPDES SD0022021

PARKSTON, CITY OF, Parkston, SD: NPDES SD0022021 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
9Pollutants under a numeric limit
5Pollutants with an effluent exceedance

PARKSTON, CITY OF, held by Parkston, city of, holds NPDES permit SD0022021, which discharges to Pony Creek. EPA’s file records it issued March 22, 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 filed	PARKSTON, CITY OF
Permittee as filed	Parkston, city of
NPDES ID	SD0022021
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	March 22, 2013
Expiration date	March 31, 2018
Issuing agency	SDDENR
Address	Parkston, SD 57366
Receiving water	Pony Creek
Subwatershed	Pony Creek (HUC 101600111206)
Program components on file	POTW, Pretreatment
NAICS	221320 – Sewage Treatment Facilities
SIC	4952 – 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

13Pollutants on file
9Under a numeric limit
13With 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
Solids, total suspended	2	216	40	June 30, 2026	720% over the limit
BOD, 5-day, 20 deg. C	2	203	21	June 30, 2026	230% over the limit
pH	2	189	11	July 31, 2024
Nitrogen, ammonia total [as N]	22	89	7	February 28, 2026	235% over the limit
E. coli, colony forming units [CFU]	2	26	1	June 30, 2024	426% over the limit
Flow rate	2	180	0
Duration of discharge	1	90	0
Temperature, water deg. centigrade	2	81	0
Flow, total	1	41	0
Coliform, fecal general	0	24	0
Nitrogen, total [as N]	0	7	0
Phosphorus, total [as P]	0	7	0
Flowing, Receiving Stream	0	3	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 SD0022021.

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 SD0022021 there.

Nearby on the register

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

This public-records page covers NPDES permit SD0022021, held by PARKSTON, CITY OF in Parkston, SD, which discharges to Pony Creek in the Pony Creek subwatershed (HUC 101600111206). The permit is administratively continued, is classed as a Minor Discharger, and lists 5 pollutants with an effluent exceedance, against 9 pollutants under a numeric limit.