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Clean Water Act discharge permit · NPDES SDG860054

LEWIS & CLARK RURAL WATER SYSTEM (WTP), Vermillion, SD: NPDES SDG860054 discharge permit, effluent exceedances, inspections, penalties

LEWIS & CLARK RURAL WATER SYSTEM (WTP), held by LEWIS & CLARK RURAL WATER SYSTEM, holds NPDES permit SDG860054, which discharges to Vermillion River, Missouri River, G. EPA’s file records it issued June 1, 2017 and expiring September 30, 2021. 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 filedLEWIS & CLARK RURAL WATER SYSTEM (WTP)
Permittee as filedLEWIS & CLARK RURAL WATER SYSTEM
NPDES IDSDG860054
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedJune 1, 2017
Expiration dateSeptember 30, 2021
Issuing agencySDDANR
AddressVermillion, SD 57069
Receiving waterVermillion River, Missouri River, G
SubwatershedOutlet Vermillion River (HUC 101701022005)

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

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Solids, total suspended222October 31, 202530% over the limit
Chlorine, total residual222April 27, 2016140% over the limit
Sulfate, total [as SO4]211November 30, 201922% over the limit
pH400
Temperature, water deg. centigrade200
Flow rate200
Conductivity200
Nitrogen, ammonia total [as N]200
Fluoride, total [as F]200
Floating solids, waste or visible foam-visual200
Flow, total200
Solids, total dissolved200
Duration of discharge200

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES SDG860054.

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

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, SDG860054.

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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 SDG860054 there.

Nearby on the register

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