How much wastewater does Hill City, City Of treat?

Hill City, City Of treats an average of 0.2 MGD and is permitted for a design flow of 0.25 MGD.

What is the NPDES permit for Hill City, City Of?

The facility discharges under NPDES permit SD0020885, currently effective, expiring February 2027.

Is Hill City, City Of in compliance?

Discharge monitoring reports show 1 violation at Hill City, City Of in the last three years, 1 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Hill City, City Of and how do I contact them?

Hill City, City Of is a publicly owned treatment works in Hill City, South Dakota. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Hill City, City Of

Hill City, SD · Pennington County · Publicly Owned Treatment Works

Average flow: 0.2 MGD

Design flow: 0.25 MGD

NPDES permit: SD0020885; Effective

Permit expires: February 2027

Population served: —; CWNS 2022

Hill City, City Of is a publicly owned wastewater treatment plant in Hill City, Pennington County, South Dakota treating an average of 0.2 million gallons per day against a permitted design capacity of 0.25 MGD. It discharges under NPDES permit SD0020885 (effective), which expires in February 2027, with 1 recorded violation in the last three years.

Treatment technology

Treatment structures identified at this facility. Exact unit counts are available in Klarifi.

Treatment structure data not yet analyzed for this facility.

Compliance snapshot (last 3 years)

Total violations: 1

Effluent violations: 1

Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.

Key contacts

Decision-makers at Hill City, City Of.

No verified contacts on file yet

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Hill City, City 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 September 11, 2026; facility record last updated November 19, 2025.

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