How much wastewater does Macoby Creek STP treat?

Macoby Creek STP treats an average of 0.15 MGD and is permitted for a design flow of 0.4 MGD.

What is the NPDES permit for Macoby Creek STP?

The facility discharges under NPDES permit PA0055875, currently effective, expiring May 2027.

Is Macoby Creek STP in compliance?

Discharge monitoring reports show 5 violations at Macoby Creek STP in the last three years, 5 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Macoby Creek STP and how do I contact them?

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

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Macoby Creek STP

Pennsburg, PA · Montgomery County · Publicly Owned Treatment Works

Average flow: 0.15 MGD

Design flow: 0.4 MGD

NPDES permit: PA0055875; Effective

Permit expires: May 2027

Population served: —; CWNS 2022

Macoby Creek STP is a publicly owned wastewater treatment works in Pennsburg, Montgomery County, Pennsylvania treating an average of 0.15 million gallons per day against a permitted design capacity of 0.4 MGD. It discharges under NPDES permit PA0055875 (effective), which expires in May 2027, with 5 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: 5

Effluent violations: 5

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

Key contacts

Decision-makers at Macoby Creek STP.

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Nearby wastewater treatment plants in Pennsylvania

Upper Montgomery Joint Authority STP

Pennsburg · 1 mi away

0.57 MGD

Green Lane Marlboro Jt Auth

Green Lane · 4 mi away

0.1 MGD

Milford-Trumbauersville WWTP

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0.47 MGD

Bally STP

Bally · 5 mi away

0.16 MGD

Washington Twp STP

Barto · 6 mi away

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Perkiomen Crossing STP

Frederick · 6 mi away

0.03 MGD

Boyertown Boro STP

Gilbertsville · 8 mi away

0.27 MGD

Lower Frederick Twp STP

Zieglersville · 8 mi away

0.13 MGD

Macoby Creek 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 2, 2025.

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