Clean Water Act discharge permit · NPDES SD0026778

WALL LAKE SANITARY DISTRICT, Hartford, SD: NPDES SD0026778 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
7Pollutants under a numeric limit
0Pollutants with an effluent exceedance

WALL LAKE SANITARY DISTRICT, held by Wall Lake Sanitary District, holds NPDES permit SD0026778, which discharges to Unnamed Tributary Of Skunk Creek. EPA’s file records it issued March 4, 2015 and expiring March 31, 2020. 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	WALL LAKE SANITARY DISTRICT
Permittee as filed	Wall Lake Sanitary District
NPDES ID	SD0026778
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 4, 2015
Expiration date	March 31, 2020
Issuing agency	SDDENR
Address	Hartford, SD 57033
Receiving water	Unnamed tributary of Skunk Creek
Subwatershed	Wall Lake (HUC 101702031104)
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

12Pollutants on file
7Under a numeric limit
12With a violation of any kind
0With 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
Flow rate	2	138
BOD, 5-day, 20 deg. C	2	138
pH	2	138
Solids, total suspended	2	138
Temperature, water deg. centigrade	2	76
Duration	0	31
Flow, total	0	31
Flow, total	1	7
Duration of discharge	1	7
Nitrogen, ammonia total [as N]	0	2
Nitrogen, total [as N]	0	1
Phosphorus, total [as P]	0	1

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES SD0026778.

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

1Single-event violations

Date	What EPA recorded	Agency
January 28, 2025	Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environment	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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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 SD0026778 there.

Nearby on the register

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

This public-records page covers NPDES permit SD0026778 held by Wall Lake Sanitary District in Hartford, SD, a minor discharger classed as a publicly owned treatment works that discharges to an unnamed tributary of Skunk Creek in the Wall Lake subwatershed (HUC 101702031104). The permit is administratively continued, having been issued March 4, 2015 and expired March 31, 2020, and the page lists 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.