Clean Water Act discharge permit · NPDES SD0023400

BUFFALO, TOWN OF, Buffalo, SD: NPDES SD0023400 discharge permit, effluent exceedances, inspections, penalties

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

BUFFALO, TOWN OF, held by Buffalo, Town of, holds NPDES permit SD0023400, which discharges to South Fork Grand River. EPA’s file records it issued March 22, 2019 and expiring March 31, 2024. 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	BUFFALO, TOWN OF
Permittee as filed	Buffalo, Town of
NPDES ID	SD0023400
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, 2019
Expiration date	March 31, 2024
Issuing agency	SDDANR
Address	Buffalo, SD 57720
Receiving water	South Fork Grand River
Receiving water impaired	303(D) Listed
Subwatershed	City of Buffalo-South Fork Grand River (HUC 101303020106)

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

Effluent limits and exceedances

16Pollutants on file
9Under a numeric limit
16With 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	39	19	May 31, 2020	1,377% over the limit
pH	2	41	17	May 31, 2020
Nitrogen, ammonia total [as N]	4	31	7	May 31, 2006	2,188% over the limit
BOD, 5-day, 20 deg. C	2	22	2	May 31, 2014	16% over the limit
Coliform, fecal general	0	13	1	May 31, 2014	850% over the limit
Temperature, water deg. centigrade	2	26	0
Flow rate	2	24	0
Flow, total	1	8	0
Duration of discharge	1	8	0
Chlorine, total residual	0	4	0
E. coli, colony forming units [CFU]	2	2	0
Nitrogen, nitrate total [as N]	0	2	0
Nitrogen, Kjeldahl, total [as N]	0	2	0
Phosphorus, total [as P]	0	2	0
Solids, total dissolved	0	2	0
Sodium adsorption ratio	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 SD0023400.

Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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 SD0023400 there.

Nearby on the register

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