How much wastewater does Tekoa STP treat?

Tekoa STP treats an average of 0.05 MGD and is permitted for a design flow of 0.4 MGD.

What treatment technology does Tekoa STP use?

Klarifi has identified clarifiers, biogas silos at the Tekoa facility.

What is the NPDES permit for Tekoa STP?

The facility discharges under NPDES permit WA0023141, currently administratively continued, expiring May 2019.

Is Tekoa STP in compliance?

Discharge monitoring reports show 35 violations at Tekoa STP in the last three years, 33 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Tekoa STP and how do I contact them?

Tekoa STP is a publicly owned treatment works in Tekoa, Washington. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Tekoa STP

Tekoa, WA · Whitman County · Publicly Owned Treatment Works

Average flow: 0.05 MGD

Design flow: 0.4 MGD

NPDES permit: WA0023141; Administratively continued

Permit expires: May 2019

Population served: 939; CWNS 2022

Tekoa STP is a publicly owned wastewater treatment works in Tekoa, Whitman County, Washington treating an average of 0.05 million gallons per day against a permitted design capacity of 0.4 MGD, serving about 939 residents. Treatment on site includes clarifiers, biogas silos. It discharges under NPDES permit WA0023141 (administratively continued), which expires in May 2019, with 35 recorded violations 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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Biogas silos

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Compliance snapshot (last 3 years)

Total violations: 35

Effluent violations: 33

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

Key contacts

Decision-makers at Tekoa STP.

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Nearby wastewater treatment plants in Washington

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Rosalia STP

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Pullman City Muni SW

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Tekoa STP: 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 November 29, 2025.

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