Clean Water Act discharge permit · NPDES WY0021890

SHOSHONI WASTEWATER LAGOONS, WY: NPDES WY0021890 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
8Pollutants under a numeric limit
6Pollutants with an effluent exceedance

SHOSHONI WASTEWATER LAGOONS, held by Shoshoni, Town of, holds NPDES permit WY0021890. EPA’s file records it issued June 28, 2011 and expiring June 30, 2016. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	SHOSHONI WASTEWATER LAGOONS
Permittee as filed	Shoshoni, Town of
NPDES ID	WY0021890
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
Issued	June 28, 2011
Expiration date	June 30, 2016
Issuing agency	WDEQ
Address	WY
Receiving water impaired	303(D) Listed
Subwatershed	Robinson Reservoir-Poison Creek (HUC 100800050404)

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

Effluent limits and exceedances

16Pollutants on file
8Under a numeric limit
16With a violation of any kind
6With 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]	6	103	37	March 31, 2020	1,110% over the limit
BOD, 5-day, 20 deg. C	12	237	21	March 31, 2020	203% over the limit
E. coli	8	81	9	March 31, 2020	31,429% over the limit
Chlorine, total residual	2	39	3	June 30, 2015	26,991% over the limit
pH	4	73	1	February 28, 2019
BOD, 5-day, percent removal	2	37	1	November 30, 2015	8% over the limit
Solids, total suspended	6	108	0
Flow	4	72	0
Duration	0	36	0
Temperature, water deg. centigrade	0	5	0
Oxygen, dissolved [DO]	0	5	0
Nitrogen, Kjeldahl, total [as N]	0	5	0
Nitrite + Nitrate total [as N]	0	5	0
Phosphorus, total [as P]	0	5	0
Solids, total dissolved	0	5	0
Produced water, oil and grease	0	5	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 WY0021890.

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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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 WY0021890 there.

Nearby on the register

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