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City Of Cloverdale Wastewater Treatment Plant

700 Asti Road, Cloverdale, CA 95425 · Sonoma County · Publicly Owned Treatment Works

Average flow
—
Design flow
1 MGD
NPDES permit
CA0022977
Expired
Permit expires
October 2023
Population served
7,920
CWNS 2022

City Of Cloverdale Wastewater Treatment Plant is a publicly owned wastewater treatment works in Cloverdale, Sonoma County, California, serving about 7,920 residents. It discharges under NPDES permit CA0022977 (expired), which expires in October 2023, with 1 recorded violation in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in February 2012.

Treatment technology

One treatment structure or unit process identified at City Of Cloverdale Wastewater Treatment Plant.

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Compliance snapshot (last 3 years)

Total violations
1
Effluent violations
0

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

EPA enforcement history

Federal civil enforcement cases, compliance inspections and informal actions recorded for City Of Cloverdale Wastewater Treatment Plant in EPA's ICIS system.

Formal actions
2
0 since FY2020
Penalties assessed
$800
all cases
Compliance actions
$1,000
required by EPA orders
EPA inspections
0
none on record

Latest case · Feb 2012

City of Cloverdale WWTP (CAA 112r)

Administrative order · CAA, Prevention of Accidental Release/Risk Management Plans (RMPs) · Final Order With Penalty · Penalty $400 · Compliance actions $1,000

EPA's description of the case:

“This is an expedited settlement agreement pursuant to Section 112(r)(7) of the CAA issued to City of Cloverdale, CA for the violation occuring at the City of Cloverdale Waste Water Treatment Plant.…”

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Source: EPA ECHO, civil enforcement case 09-2012-3501.

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Every action against City Of Cloverdale Wastewater Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.

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Key contacts

Decision-makers at City Of Cloverdale Wastewater Treatment Plant.

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Nearby wastewater treatment plants in California

Healdsburg WWTF

Healdsburg · 17 mi away

1.14 MGD

Russian River POTW

Guerneville · 21 mi away

0.31 MGD

Graton Csd WWTF

Graton · 25 mi away

0.3 MGD

Dunaweal WWTP

Calistoga · 29 mi away

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City Of Cloverdale Wastewater Treatment 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 · Significant industrial user · WWTP · all terms


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