How much wastewater does Mulberry STP treat?

Mulberry STP treats an average of 0.4 MGD and is permitted for a design flow of 0.75 MGD.

What is the NPDES permit for Mulberry STP?

The facility discharges under NPDES permit FL0020338, currently effective, expiring November 2026.

Is Mulberry STP in compliance?

Discharge monitoring reports show 10 violations at Mulberry STP in the last three years, 10 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Mulberry STP and how do I contact them?

Mulberry STP is a publicly owned treatment works in Mulberry, Florida. Klarifi lists 2 verified decision-maker contacts for this facility, available with a free trial.

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Mulberry STP

Q: What treatment technology does Mulberry STP use?

Klarifi has identified clarifiers, uncovered lagoons, disinfection, chlorine/ chloramine, disinfection, ozone, flow equalization, primary clarification or sedimentation, screening at the Mulberry facility.

Mulberry, FL · Polk County · Publicly Owned Treatment Works

Average flow: 0.4 MGD

Design flow: 0.75 MGD

NPDES permit: FL0020338; Effective

Permit expires: November 2026

Population served: 3,952; CWNS 2022

Mulberry STP is a publicly owned wastewater treatment works in Mulberry, Polk County, Florida treating an average of 0.4 million gallons per day against a permitted design capacity of 0.75 MGD, serving about 3,952 residents. Treatment on site includes clarifiers, uncovered lagoons, disinfection, chlorine/ chloramine, disinfection, ozone, flow equalization and other unit processes. It discharges under NPDES permit FL0020338 (effective), which expires in November 2026, with 10 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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Uncovered lagoons

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Disinfection, chlorine/ chloramine

unit process

Disinfection, ozone

unit process

Flow Equalization

unit process

Primary Clarification or Sedimentation

unit process

Screening

unit process

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Compliance snapshot (last 3 years)

Total violations: 10

Effluent violations: 10

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

Key contacts

2 verified contacts for Mulberry STP, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Mulberry STP, plus the full compliance history and discharge data.

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Mulberry STP: 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 March 16, 2025.

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