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Clean Water Act discharge permit · NPDES SDG589108

CHERRY CREEK WASTEWATER TREATMENT FACILITY, Cherry Creek, SD: NPDES SDG589108 discharge permit, effluent exceedances, inspections, penalties

CHERRY CREEK WASTEWATER TREATMENT FACILITY, held by Tri-County Water Associations Inc, holds NPDES permit SDG589108. EPA’s file records it issued March 9, 2016 and expiring December 31, 2020. 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 filedCHERRY CREEK WASTEWATER TREATMENT FACILITY
Permittee as filedTri-County Water Associations Inc
NPDES IDSDG589108
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedMarch 9, 2016
Expiration dateDecember 31, 2020
Issuing agencyU.S. EPA Region 8
AddressCherry Creek, SD 57625
Receiving water impaired303(D) Listed
SubwatershedRobbs Draw-Cheyenne River (HUC 101201121104)

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
BOD, 5-day, 20 deg. C0590
Solids, total suspended0590
pH0320
Temperature, water deg. centigrade0240
Nitrogen, ammonia total [as N]0240
Nitrogen, total [as N]0160
Nitrite + Nitrate total [as N]0160
Phosphorus, total [as P]0160
E. coli0160
Nitrogen, Kjeldahl Total0160
Flow, total0160
Oil & Grease080
BOD, 5-day, percent removal080
Solids, suspended percent removal080
Oil and grease visual080

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES SDG589108.

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 SDG589108.

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, SDG589108.

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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 SDG589108 there.

Nearby on the register

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