How much wastewater does City Of Louisville treat?

City Of Louisville treats an average of 2.68 MGD and is permitted for a design flow of 3.4 MGD.

What treatment technology does City Of Louisville use?

Klarifi has identified clarifiers at the Louisville facility.

What is the NPDES permit for City Of Louisville?

The facility discharges under NPDES permit CO0023078, currently administratively continued, expiring September 2016.

Is City Of Louisville in compliance?

Discharge monitoring reports show 3 violations at City Of Louisville in the last three years, 3 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates City Of Louisville and how do I contact them?

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

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City Of Louisville

Louisville, CO · Boulder County · Publicly Owned Treatment Works

Average flow: 2.68 MGD

Design flow: 3.4 MGD

NPDES permit: CO0023078; Administratively continued

Permit expires: September 2016

Population served: 21,171; CWNS 2022

City Of Louisville is a publicly owned wastewater treatment plant in Louisville, Boulder County, Colorado treating an average of 2.68 million gallons per day against a permitted design capacity of 3.4 MGD, serving about 21,171 residents. Treatment on site includes clarifiers. It discharges under NPDES permit CO0023078 (administratively continued), which expires in September 2016, with 3 recorded violations in the last three years.

Treatment technology

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

Clarifiers

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Compliance snapshot (last 3 years)

Total violations: 3

Effluent violations: 3

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

Key contacts

Decision-makers at City Of Louisville.

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City Of Louisville: 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 August 19, 2026.

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