How much wastewater does Healdsburg WWTF treat?

Healdsburg WWTF treats an average of 0.75 MGD and is permitted for a design flow of 4 MGD.

What treatment technology does Healdsburg WWTF use?

Klarifi has identified aerated lagoons, uncovered lagoons at the Healdsburg facility.

What is the NPDES permit for Healdsburg WWTF?

The facility discharges under NPDES permit CA0025135, currently effective, expiring November 2027.

Is Healdsburg WWTF in compliance?

Discharge monitoring reports show 249 violations at Healdsburg WWTF in the last three years, 1 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Healdsburg WWTF and how do I contact them?

Healdsburg WWTF is a publicly owned treatment works in Healdsburg, California. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Healdsburg WWTF

Healdsburg, CA · Sonoma County · Publicly Owned Treatment Works

Average flow: 0.75 MGD

Design flow: 4 MGD

NPDES permit: CA0025135; Effective

Permit expires: November 2027

Population served: 10,980; CWNS 2022

Healdsburg WWTF is a publicly owned wastewater treatment works in Healdsburg, Sonoma County, California treating an average of 0.75 million gallons per day against a permitted design capacity of 4 MGD, serving about 10,980 residents. Treatment on site includes aerated lagoons, uncovered lagoons. It discharges under NPDES permit CA0025135 (effective), which expires in November 2027, with 249 recorded violations in the last three years.

Treatment technology

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

Aerated lagoons

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Uncovered lagoons

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Compliance snapshot (last 3 years)

Total violations: 249

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 Healdsburg WWTF.

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Healdsburg WWTF: 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 27, 2025.

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