How much wastewater does Payette WWTP treat?

Payette WWTP treats an average of 1 MGD and is permitted for a design flow of 2.88 MGD.

What treatment technology does Payette WWTP use?

Klarifi has identified clarifiers, carrousels / oxidation ditches at the Payette facility.

What is the NPDES permit for Payette WWTP?

The facility discharges under NPDES permit ID0020672, currently administratively continued, expiring October 2019.

Is Payette WWTP in compliance?

Discharge monitoring reports show 1 violation at Payette WWTP in the last three years, 1 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Payette WWTP and how do I contact them?

Payette WWTP is a publicly owned treatment works in Payette, Idaho. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Payette WWTP

Payette, ID · Payette County · Publicly Owned Treatment Works

Average flow: 1 MGD

Design flow: 2.88 MGD

NPDES permit: ID0020672; Administratively continued

Permit expires: October 2019

Population served: 8,415; CWNS 2022

Payette WWTP is a publicly owned wastewater treatment works in Payette, Payette County, Idaho treating an average of 1 million gallons per day against a permitted design capacity of 2.88 MGD, serving about 8,415 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches. It discharges under NPDES permit ID0020672 (administratively continued), which expires in October 2019, with 1 recorded violation 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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Carrousels / oxidation ditches

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Compliance snapshot (last 3 years)

Total violations: 1

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 Payette WWTP.

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Nearby wastewater treatment plants in Idaho

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Fruitland Snake River WWTP

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New Plymouth Sewage Lagoon

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Weiser WWTP

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Parma WWTP

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Emmett WWTP

Emmett · 25 mi away

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Notus WWTP

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Wilder WWTP

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Payette 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 September 11, 2026; facility record last updated May 17, 2025.

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