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Sunnyvale Water Pollution Control Plant

1444 Borregas Ave, Sunnyvale, CA 94089 · Santa Clara County · Publicly Owned Treatment Works

Average flow
—
Design flow
40 MGD
NPDES permit
CA0037621
Expired
Permit expires
March 2025
Population served
138,290
CWNS 2022

Sunnyvale Water Pollution Control Plant is a publicly owned wastewater treatment works in Sunnyvale, Santa Clara County, California, serving about 138,290 residents. It discharges under NPDES permit CA0037621 (expired), which expires in March 2025, with 22 recorded violations in the last three years.

Treatment technology

2 treatment structures and unit processes identified at Sunnyvale Water Pollution Control Plant.

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Compliance snapshot (last 3 years)

Total violations
22
Effluent violations
22

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

Key contacts

2 verified contacts for Sunnyvale Water Pollution Control Plant, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Sunnyvale Water Pollution Control Plant, plus the full compliance history and discharge data.

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Nearby wastewater treatment plants in California

Raymond A. Boege Alvarado Wwtp, Old Alameda Creek Intermittent Wwd

Union City · 13 mi away

—

San Mateo WWTF

San Mateo · 18 mi away

—

Dublin-San Ramon WWTF

Pleasanton · 19 mi away

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Lavwma Export And Storage Facilities

Pleasanton · 20 mi away

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Burlingame WWTP

Burlingame · 22 mi away

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Sewer Authority Mid-Coastside

Half Moon Bay · 24 mi away

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Sunnyvale Water Pollution Control Plant: 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 29, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms


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