How much wastewater does Ctl Mainline STP treat?

Ctl Mainline STP treats an average of 0.08 MGD and is permitted for a design flow of 0.35 MGD.

What is the NPDES permit for Ctl Mainline STP?

The facility discharges under NPDES permit PA0218570, currently effective, expiring November 2026.

Is Ctl Mainline STP in compliance?

Discharge monitoring reports show no violations at Ctl Mainline STP in the last three years.

Who operates Ctl Mainline STP and how do I contact them?

Ctl Mainline STP is a publicly owned treatment works in Portage, Pennsylvania. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Ctl Mainline STP

Portage, PA · Cambria County · Publicly Owned Treatment Works

Average flow: 0.08 MGD

Design flow: 0.35 MGD

NPDES permit: PA0218570; Effective

Permit expires: November 2026

Population served: —; CWNS 2022

Ctl Mainline STP is a publicly owned wastewater treatment works in Portage, Cambria County, Pennsylvania treating an average of 0.08 million gallons per day against a permitted design capacity of 0.35 MGD. It discharges under NPDES permit PA0218570 (effective), which expires in November 2026, with 0 recorded violations in the last three years.

Treatment technology

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

Treatment structure data not yet analyzed for this facility.

Compliance snapshot (last 3 years)

Total violations: 0

Effluent violations: 0

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

Key contacts

Decision-makers at Ctl Mainline STP.

No verified contacts on file yet

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Ctl Mainline 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 October 18, 2024.

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