Hermosa - Town Of
PO Box 298, Hermosa, SD 57744 · Custer County · Publicly Owned Treatment Works
- Average flow
- 0.02 MGD
- Design flow
- 0.03 MGD
- NPDES permit
- SD0022349
- Effective
- Permit expires
- June 2030
- Population served
- 296
- CWNS 2022
Hermosa - Town Of is a publicly owned wastewater treatment plant in Hermosa, Custer County, South Dakota treating an average of 0.02 million gallons per day against a permitted design capacity of 0.03 MGD, serving about 296 residents. It discharges under NPDES permit SD0022349 (effective), which expires in June 2030, with 18 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at Hermosa - Town Of.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 18
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Hermosa - Town Of.
No verified contacts on file yet
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Nearby wastewater treatment plants in South Dakota
Custer · 11 mi away
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Keystone · 11 mi away
0.1 MGD
Rapid City · 14 mi away
9.62 MGD
Red Shirt · 18 mi away
—
Hill City · 20 mi away
0.17 MGD
Summerset · 27 mi away
0.21 MGD
Hot Springs · 32 mi away
0.43 MGD
Sturgis · 43 mi away
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Hermosa - Town Of: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed October 26, 2026; facility record last updated July 18, 2023.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · WWTP · Biosolids · all terms