What is the address of Sewickley Boro?

The address on the plant’s EPA facility record is 601 Thorn St, Sewickley, PA 15143, in Allegheny County. Its coordinates are 40.5404, -80.1906. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Sewickley Boro treat?

Sewickley Boro treats an average of 0.68 MGD and is permitted for a design flow of 0.9 MGD.

What treatment technology does Sewickley Boro use?

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

What is the NPDES permit for Sewickley Boro?

The facility discharges under NPDES permit PA0020681, currently effective, expiring February 2028.

Is Sewickley Boro in compliance?

Discharge monitoring reports show 4 violations at Sewickley Boro in the last three years, 4 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Sewickley Boro and how do I contact them?

Sewickley Boro is a publicly owned treatment works in Sewickley, Pennsylvania. Klarifi lists 2 verified decision-maker contacts for this facility, available with a free trial.

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Sewickley Boro

601 Thorn St, Sewickley, PA 15143 · Allegheny County · Publicly Owned Treatment Works

Average flow: 0.68 MGD

Design flow: 0.9 MGD

NPDES permit: PA0020681; Effective

Permit expires: February 2028

Population served: —; CWNS 2022

Sewickley Boro is a publicly owned wastewater treatment plant in Sewickley, Allegheny County, Pennsylvania treating an average of 0.68 million gallons per day against a permitted design capacity of 0.9 MGD. It discharges under NPDES permit PA0020681 (effective), which expires in February 2028, with 4 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Sewickley Boro.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 4

Effluent violations: 4

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

Key contacts

2 verified contacts for Sewickley Boro, with validated emails and direct phone numbers.

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

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Sewickley Boro: 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 12, 2026; facility record last updated August 19, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms

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