Clean Water Act discharge permit · NPDES SDG921504

ANDOVER, TOWN OF, Andover, SD: NPDES SDG921504 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
8Pollutants under a numeric limit
1Pollutants with an effluent exceedance

ANDOVER, TOWN OF, held by Andover, Town of, holds NPDES permit SDG921504, which discharges to Unnamed Tributary Of Mud Creek. EPA’s file records it issued March 1, 2017 and expiring December 31, 2020. 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	ANDOVER, TOWN OF
Permittee as filed	Andover, Town of
NPDES ID	SDG921504
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	March 1, 2017
Expiration date	December 31, 2020
Issuing agency	SDDENR
Address	Andover, SD 57422
Receiving water	Unnamed tributary of Mud Creek
Subwatershed	Town of Andover (HUC 101600050205)

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

Effluent limits and exceedances

10Pollutants on file
8Under a numeric limit
10With a violation of any kind
1With 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	40	4	October 31, 2021	50% over the limit
Flow rate	2	38	0
pH	2	37	0
Temperature, water deg. centigrade	2	36	0
BOD, 5-day, 20 deg. C	2	36	0
Nitrogen, ammonia total [as N]	2	36	0
Flow, total	1	18	0
Duration of discharge	1	17	0
Nitrogen, total [as N]	0	9	0
Phosphorus, total [as P]	0	9	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 SDG921504.

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 SDG921504 there.

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 SDG921504, held by ANDOVER, TOWN OF, a minor discharger and publicly owned treatment works, which discharges to an unnamed tributary of Mud Creek within HUC 101600050205. The permit is administratively continued, with an issue date of March 1, 2017 and an expiration date of December 31, 2020, and the page lists 10 pollutants on file, 8 under a numeric limit, and 1 with an effluent exceedance.