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Williamsport Sanitary Authority - West Plant

26 Arch Street, Williamsport, PA 17701 · Lycoming County · Publicly Owned Treatment Works

Average flow
1.85 MGD
Design flow
3.92 MGD
NPDES permit
PA0027049
Effective
Permit expires
February 2029
Population served
—
CWNS 2022

Williamsport Sanitary Authority - West Plant is a publicly owned wastewater treatment plant in Williamsport, Lycoming County, Pennsylvania treating an average of 1.85 million gallons per day against a permitted design capacity of 3.92 MGD. It discharges under NPDES permit PA0027049 (effective), which expires in February 2029, with 0 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in February 2016.

Treatment technology

2 treatment structures and unit processes identified at Williamsport Sanitary Authority - West Plant.

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See the full treatment train at Williamsport Sanitary Authority - West Plant: structures, unit processes and planned upgrades, with exact unit counts.

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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.

EPA enforcement history

Federal civil enforcement cases, compliance inspections and informal actions recorded for Williamsport Sanitary Authority - West Plant in EPA's ICIS system.

Formal actions
1
0 since FY2020
Penalties assessed
$320,000
all cases
Compliance actions
$19M
required by EPA orders
EPA inspections
2
latest Aug 2004

Latest case · Feb 2016

WILLIAMSPORT SANITATION AUTHORITY

Judicial case · CWA, NPDES Permit Violations · Final Order With Penalty · Penalty $320,000 · Compliance actions $19M

Source: EPA ECHO, civil enforcement case 03-2007-0341.

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Every action against Williamsport Sanitary Authority - West Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.

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Key contacts

3 verified contacts for Williamsport Sanitary Authority - West Plant, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Williamsport Sanitary Authority - West Plant, plus the full compliance history and discharge data.

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Nearby wastewater treatment plants in Pennsylvania

Williamsport Sanitary Authority - Central Plant

Williamsport · 3 mi away

5.18 MGD

0.51 MGD

Pine Creek Muni Auth STP

Jersey Shore · 15 mi away

0.99 MGD

White Deer Twp Muncipal Auth

New Columbia · 16 mi away

0.26 MGD

1.61 MGD

Loganton Borough Authority

Loganton · 20 mi away

0.02 MGD

Mifflinburg WWTP

Mifflinburg · 21 mi away

0.65 MGD

Pottsgrove STP

Milton · 21 mi away

0.02 MGD

Williamsport Sanitary Authority - West Plant: 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 March 3, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms


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