Philadelphia Southwest POTW
8200 Enterprise Ave, Philadelphia, PA 19153 · Philadelphia County · Publicly Owned Treatment Works
- Average flow
- 182.78 MGD
- Design flow
- —
- NPDES permit
- PAL026671
- Effective
- Permit expires
- December 2030
- Population served
- 547,807
- CWNS 2022
Philadelphia Southwest POTW is a publicly owned wastewater treatment works in Philadelphia, Philadelphia County, Pennsylvania treating an average of 182.78 million gallons per day, serving about 547,807 residents. It discharges under NPDES permit PAL026671 (effective), which expires in December 2030, with 36 recorded violations in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in September 2012.
Treatment technology
One treatment structure or unit process identified at Philadelphia Southwest POTW.
Available with a free Klarifi account
See the full treatment train at Philadelphia Southwest POTW: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 36
- Effluent violations
- 36
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 Philadelphia Southwest POTW in EPA's ICIS system.
- Formal actions
- 2
- 0 since FY2020
- Penalties assessed
- $1.5M
- all cases
- EPA inspections
- 0
- none on record
Latest case · Sep 2012
PHILADELPHIA, CITY OF WATER DEPARTMENT AND THE CITY OF PHILADELPHIA (3 FACILITIES)
Administrative order · CWA, Information Request, Records, Entry · Final Order No Penalty · The case also names 2 other plants, and its amounts cover all of them
Source: EPA ECHO, civil enforcement case 03-2012-0264.
Full case history with a free Klarifi account
Every action against Philadelphia Southwest POTW with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Philadelphia
Philadelphia's capital improvement plan lists 4 water, sewer and wastewater line items worth $5M starting 2026–2026. The largest budgeted items are shown here.
All water and sewer capital projects in Philadelphia →
| Project | Budget | Years |
|---|---|---|
| Improvements to Collector System | $1,874,250 | 2026–2031 |
| Improvements to Treatment Facilities | $1,530,000 | 2026–2031 |
| Improvements to Conveyance System | $1,187,600 | 2026–2031 |
| Engineering and Material Support | $140,000 | 2026–2031 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
2 verified contacts for Philadelphia Southwest POTW, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Philadelphia Southwest POTW, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Pennsylvania
Philadelphia · 4 mi away
86 MGD
Brookhaven · 9 mi away
0.15 MGD
Chester · 10 mi away
30.48 MGD
Philadelphia · 10 mi away
153.22 MGD
Conshohocken · 13 mi away
1.07 MGD
Lafayette Hill · 14 mi away
0.88 MGD
King Of Prussia · 15 mi away
2.45 MGD
Glen Mills · 15 mi away
1.14 MGD
Philadelphia Southwest POTW: 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 26, 2026; facility record last updated August 13, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms