How much wastewater does Oswego - C East Side STP treat?

Oswego - C East Side STP is permitted for a design flow of 5.35 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Oswego - C East Side STP use?

Klarifi has identified uncovered lagoons at the Oswego facility.

What is the NPDES permit for Oswego - C East Side STP?

The facility discharges under NPDES permit NY0029114, currently administratively continued, expiring October 2019.

Is Oswego - C East Side STP in compliance?

Discharge monitoring reports show 17 violations at Oswego - C East Side STP in the last three years, 11 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Oswego - C East Side STP and how do I contact them?

Oswego - C East Side STP is a publicly owned treatment works in Oswego, New York. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Oswego - C East Side STP

Oswego, NY · Oswego County · Publicly Owned Treatment Works

Average flow: —

Design flow: 5.35 MGD

NPDES permit: NY0029114; Administratively continued

Permit expires: October 2019

Population served: 18,095; CWNS 2022

Oswego - C East Side STP is a publicly owned wastewater treatment works in Oswego, Oswego County, New York, serving about 18,095 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit NY0029114 (administratively continued), which expires in October 2019, with 17 recorded violations in the last three years.

Treatment technology

Treatment structures identified at this facility. Exact unit counts are available in Klarifi.

Uncovered lagoons

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Compliance snapshot (last 3 years)

Total violations: 17

Effluent violations: 11

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

Key contacts

Decision-makers at Oswego - C East Side STP.

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Oswego - C East Side 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 May 21, 2025.

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