What is the address of Clarence WWTP?

The address on the plant’s EPA facility record is Off Plum Ave, Clarence, IA 52216, in Cedar County. Its coordinates are 41.8931, -91.0719. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Clarence WWTP treat?

Clarence WWTP treats an average of 0.3 MGD and is permitted for a design flow of 0.41 MGD.

What treatment technology does Clarence WWTP use?

Klarifi has identified one treatment structure or unit process at the Clarence facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Clarence WWTP?

The facility discharges under NPDES permit IA0027201, currently administratively continued, expiring June 2026.

Is Clarence WWTP in compliance?

Discharge monitoring reports show 2 violations at Clarence WWTP in the last three years, 2 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Clarence WWTP and how do I contact them?

Clarence WWTP is a publicly owned treatment works in Clarence, Iowa. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

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Clarence WWTP

Off Plum Ave, Clarence, IA 52216 · Cedar County · Publicly Owned Treatment Works

Average flow: 0.3 MGD

Design flow: 0.41 MGD

NPDES permit: IA0027201; Administratively continued

Permit expires: June 2026

Population served: 1,039; CWNS 2022

Clarence WWTP is a publicly owned wastewater treatment works in Clarence, Cedar County, Iowa treating an average of 0.3 million gallons per day against a permitted design capacity of 0.41 MGD, serving about 1,039 residents. It discharges under NPDES permit IA0027201 (administratively continued), which expires in June 2026, with 2 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Clarence WWTP.

Available with a free Klarifi account

See the full treatment train at Clarence WWTP: structures, unit processes and planned upgrades, with exact unit counts.

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Compliance snapshot (last 3 years)

Total violations: 2

Effluent violations: 2

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

Key contacts

1 verified contact for Clarence WWTP, with validated emails and direct phone numbers.

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

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Nearby wastewater treatment plants in Iowa

Stanwood WWTP

Stanwood · 5 mi away

0.21 MGD

Olin WWTP

Olin · 7 mi away

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Lowden City Of STP

Lowden · 8 mi away

0.07 MGD

Oxford Junction WWTP

Oxford Junction · 8 mi away

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Mechanicsville WWTP

Mechanicsville · 9 mi away

0.13 MGD

Tipton WWTP (west)

Tipton · 10 mi away

0.39 MGD

Wyoming WWTP

Wyoming · 12 mi away

0.09 MGD

Bennett City Of STP

Bennett · 12 mi away

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Clarence WWTP: 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 March 28, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms

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