What is the address of Wiconisco STP?

The address on the plant’s EPA facility record is 305 Walnut St, Wiconisco, PA 17097, in Dauphin County. Its coordinates are 40.5722, -76.6992. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Wiconisco STP treat?

Wiconisco STP treats an average of 0.04 MGD and is permitted for a design flow of 0.13 MGD.

What treatment technology does Wiconisco STP use?

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

What is the NPDES permit for Wiconisco STP?

The facility discharges under NPDES permit PA0084697, currently effective, expiring June 2030.

Is Wiconisco STP in compliance?

Discharge monitoring reports show 7 violations at Wiconisco STP in the last three years, 7 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Wiconisco STP and how do I contact them?

Wiconisco STP is a publicly owned treatment works in Wiconisco, Pennsylvania. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

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Wiconisco STP

305 Walnut St, Wiconisco, PA 17097 · Dauphin County · Publicly Owned Treatment Works

Average flow: 0.04 MGD

Design flow: 0.13 MGD

NPDES permit: PA0084697; Effective

Permit expires: June 2030

Population served: —; CWNS 2022

Wiconisco STP is a publicly owned wastewater treatment works in Wiconisco, Dauphin County, Pennsylvania treating an average of 0.04 million gallons per day against a permitted design capacity of 0.13 MGD. It discharges under NPDES permit PA0084697 (effective), which expires in June 2030, with 7 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Wiconisco STP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 7

Effluent violations: 7

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

Key contacts

1 verified contact for Wiconisco STP, with validated emails and direct phone numbers.

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

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Nearby wastewater treatment plants in Pennsylvania

Lykens Boro Auth - STP

Lykens · 1 mi away

0.14 MGD

Gratz Boro STP

Gratz · 3 mi away

0.04 MGD

Washington Twp Loyalton STP

Elizabethville · 3 mi away

0.02 MGD

Williamstown Boro STP

Williamstown · 4 mi away

0.18 MGD

Elizabethville STP

Elizabethville · 6 mi away

0.15 MGD

Porter-Tower Joint Municipal Auth

Tower City · 6 mi away

0.5 MGD

Berrysburg STP

Berrysburg · 6 mi away

0.01 MGD

Herndon Borough Jackson Twp Jt Muni Auth WWTP

Herndon · 12 mi away

0.03 MGD

Wiconisco 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 October 12, 2026; facility record last updated January 25, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms

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